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CodeIgniter</a><ul> <li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li> <li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li> </ul> </li> </ul> </div> </nav> <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> <i data-toggle="wy-nav-top" class="fa fa-bars"></i> <a href="../index.html">CodeIgniter</a> </nav> <div class="wy-nav-content"> <div class="rst-content"> <div role="navigation" aria-label="breadcrumbs navigation"> <ul class="wy-breadcrumbs"> <li><a href="../index.html">Docs</a> »</li> <li><a href="index.html">Database Reference</a> »</li> <li>Generating Query Results</li> <li class="wy-breadcrumbs-aside"> </li> </ul> <hr/> </div> <div role="main" class="document"> <div class="section" id="generating-query-results"> <h1>Generating Query Results<a class="headerlink" href="#generating-query-results" title="Permalink to this headline">¶</a></h1> <p>There are several ways to generate query results:</p> <div class="contents local topic" id="contents"> <ul class="simple"> <li><a class="reference internal" href="#result-arrays" id="id1">Result Arrays</a></li> <li><a class="reference internal" href="#result-rows" id="id2">Result Rows</a></li> <li><a class="reference internal" href="#result-helper-methods" id="id3">Result Helper Methods</a></li> <li><a class="reference internal" href="#class-reference" id="id4">Class Reference</a></li> </ul> </div> <div class="section" id="result-arrays"> <h2><a class="toc-backref" href="#id1">Result Arrays</a><a class="headerlink" href="#result-arrays" title="Permalink to this headline">¶</a></h2> <p><strong>result()</strong></p> <p>This method returns the query result as an array of <strong>objects</strong>, or <strong>an empty array</strong> on failure. Typically you’ll use this in a foreach loop, like this:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"YOUR QUERY"</span><span class="p">);</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">result</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$row</span><span class="p">)</span> <span class="p">{</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">title</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">body</span><span class="p">;</span> <span class="p">}</span> </pre></div> </div> <p>The above method is an alias of <tt class="docutils literal"><span class="pre">result_object()</span></tt>.</p> <p>If you run queries that might <strong>not</strong> produce a result, you are encouraged to test the result first:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"YOUR QUERY"</span><span class="p">);</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">num_rows</span><span class="p">()</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">result</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$row</span><span class="p">)</span> <span class="p">{</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">title</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">body</span><span class="p">;</span> <span class="p">}</span> <span class="p">}</span> </pre></div> </div> <p>You can also pass a string to result() which represents a class to instantiate for each result object (note: this class must be loaded)</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"SELECT * FROM users;"</span><span class="p">);</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">result</span><span class="p">(</span><span class="s1">'User'</span><span class="p">)</span> <span class="k">as</span> <span class="nv">$user</span><span class="p">)</span> <span class="p">{</span> <span class="k">echo</span> <span class="nv">$user</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="c1">// access attributes</span> <span class="k">echo</span> <span class="nv">$user</span><span class="o">-></span><span class="na">reverse_name</span><span class="p">();</span> <span class="c1">// or methods defined on the 'User' class</span> <span class="p">}</span> </pre></div> </div> <p><strong>result_array()</strong></p> <p>This method returns the query result as a pure array, or an empty array when no result is produced. Typically you’ll use this in a foreach loop, like this:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"YOUR QUERY"</span><span class="p">);</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">result_array</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$row</span><span class="p">)</span> <span class="p">{</span> <span class="k">echo</span> <span class="nv">$row</span><span class="p">[</span><span class="s1">'title'</span><span class="p">];</span> <span class="k">echo</span> <span class="nv">$row</span><span class="p">[</span><span class="s1">'name'</span><span class="p">];</span> <span class="k">echo</span> <span class="nv">$row</span><span class="p">[</span><span class="s1">'body'</span><span class="p">];</span> <span class="p">}</span> </pre></div> </div> </div> <div class="section" id="result-rows"> <h2><a class="toc-backref" href="#id2">Result Rows</a><a class="headerlink" href="#result-rows" title="Permalink to this headline">¶</a></h2> <p><strong>row()</strong></p> <p>This method returns a single result row. If your query has more than one row, it returns only the first row. The result is returned as an <strong>object</strong>. Here’s a usage example:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"YOUR QUERY"</span><span class="p">);</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">num_rows</span><span class="p">()</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span> <span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">row</span><span class="p">();</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">title</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">body</span><span class="p">;</span> <span class="p">}</span> </pre></div> </div> <p>If you want a specific row returned you can submit the row number as a digit in the first parameter:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">row</span><span class="p">(</span><span class="mi">5</span><span class="p">);</span> </pre></div> </div> <p>You can also add a second String parameter, which is the name of a class to instantiate the row with:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"SELECT * FROM users LIMIT 1;"</span><span class="p">);</span> <span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">row</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="s1">'User'</span><span class="p">);</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="c1">// access attributes</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">reverse_name</span><span class="p">();</span> <span class="c1">// or methods defined on the 'User' class</span> </pre></div> </div> <p><strong>row_array()</strong></p> <p>Identical to the above <tt class="docutils literal"><span class="pre">row()</span></tt> method, except it returns an array. Example:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"YOUR QUERY"</span><span class="p">);</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">num_rows</span><span class="p">()</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span> <span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">row_array</span><span class="p">();</span> <span class="k">echo</span> <span class="nv">$row</span><span class="p">[</span><span class="s1">'title'</span><span class="p">];</span> <span class="k">echo</span> <span class="nv">$row</span><span class="p">[</span><span class="s1">'name'</span><span class="p">];</span> <span class="k">echo</span> <span class="nv">$row</span><span class="p">[</span><span class="s1">'body'</span><span class="p">];</span> <span class="p">}</span> </pre></div> </div> <p>If you want a specific row returned you can submit the row number as a digit in the first parameter:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">row_array</span><span class="p">(</span><span class="mi">5</span><span class="p">);</span> </pre></div> </div> <p>In addition, you can walk forward/backwards/first/last through your results using these variations:</p> <blockquote> <div><div class="line-block"> <div class="line"><strong>$row = $query->first_row()</strong></div> <div class="line"><strong>$row = $query->last_row()</strong></div> <div class="line"><strong>$row = $query->next_row()</strong></div> <div class="line"><strong>$row = $query->previous_row()</strong></div> </div> </div></blockquote> <p>By default they return an object unless you put the word “array” in the parameter:</p> <blockquote> <div><div class="line-block"> <div class="line"><strong>$row = $query->first_row(‘array’)</strong></div> <div class="line"><strong>$row = $query->last_row(‘array’)</strong></div> <div class="line"><strong>$row = $query->next_row(‘array’)</strong></div> <div class="line"><strong>$row = $query->previous_row(‘array’)</strong></div> </div> </div></blockquote> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">All the methods above will load the whole result into memory (prefetching). Use <tt class="docutils literal"><span class="pre">unbuffered_row()</span></tt> for processing large result sets.</p> </div> <p><strong>unbuffered_row()</strong></p> <p>This method returns a single result row without prefetching the whole result in memory as <tt class="docutils literal"><span class="pre">row()</span></tt> does. If your query has more than one row, it returns the current row and moves the internal data pointer ahead.</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"YOUR QUERY"</span><span class="p">);</span> <span class="k">while</span> <span class="p">(</span><span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">unbuffered_row</span><span class="p">())</span> <span class="p">{</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">title</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">body</span><span class="p">;</span> <span class="p">}</span> </pre></div> </div> <p>You can optionally pass ‘object’ (default) or ‘array’ in order to specify the returned value’s type:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span><span class="o">-></span><span class="na">unbuffered_row</span><span class="p">();</span> <span class="c1">// object</span> <span class="nv">$query</span><span class="o">-></span><span class="na">unbuffered_row</span><span class="p">(</span><span class="s1">'object'</span><span class="p">);</span> <span class="c1">// object</span> <span class="nv">$query</span><span class="o">-></span><span class="na">unbuffered_row</span><span class="p">(</span><span class="s1">'array'</span><span class="p">);</span> <span class="c1">// associative array</span> </pre></div> </div> </div> <div class="section" id="result-helper-methods"> <h2><a class="toc-backref" href="#id3">Result Helper Methods</a><a class="headerlink" href="#result-helper-methods" title="Permalink to this headline">¶</a></h2> <p><strong>num_rows()</strong></p> <p>The number of rows returned by the query. Note: In this example, $query is the variable that the query result object is assigned to:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s1">'SELECT * FROM my_table'</span><span class="p">);</span> <span class="k">echo</span> <span class="nv">$query</span><span class="o">-></span><span class="na">num_rows</span><span class="p">();</span> </pre></div> </div> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">Not all database drivers have a native way of getting the total number of rows for a result set. When this is the case, all of the data is prefetched and <tt class="docutils literal"><span class="pre">count()</span></tt> is manually called on the resulting array in order to achieve the same result.</p> </div> <p><strong>num_fields()</strong></p> <p>The number of FIELDS (columns) returned by the query. Make sure to call the method using your query result object:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s1">'SELECT * FROM my_table'</span><span class="p">);</span> <span class="k">echo</span> <span class="nv">$query</span><span class="o">-></span><span class="na">num_fields</span><span class="p">();</span> </pre></div> </div> <p><strong>free_result()</strong></p> <p>It frees the memory associated with the result and deletes the result resource ID. Normally PHP frees its memory automatically at the end of script execution. However, if you are running a lot of queries in a particular script you might want to free the result after each query result has been generated in order to cut down on memory consumption.</p> <p>Example:</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s1">'SELECT title FROM my_table'</span><span class="p">);</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">result</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$row</span><span class="p">)</span> <span class="p">{</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">title</span><span class="p">;</span> <span class="p">}</span> <span class="nv">$query</span><span class="o">-></span><span class="na">free_result</span><span class="p">();</span> <span class="c1">// The $query result object will no longer be available</span> <span class="nv">$query2</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s1">'SELECT name FROM some_table'</span><span class="p">);</span> <span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query2</span><span class="o">-></span><span class="na">row</span><span class="p">();</span> <span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">name</span><span class="p">;</span> <span class="nv">$query2</span><span class="o">-></span><span class="na">free_result</span><span class="p">();</span> <span class="c1">// The $query2 result object will no longer be available</span> </pre></div> </div> <p><strong>data_seek()</strong></p> <p>This method sets the internal pointer for the next result row to be fetched. It is only useful in combination with <tt class="docutils literal"><span class="pre">unbuffered_row()</span></tt>.</p> <p>It accepts a positive integer value, which defaults to 0 and returns TRUE on success or FALSE on failure.</p> <div class="highlight-ci"><div class="highlight"><pre><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s1">'SELECT `field_name` FROM `table_name`'</span><span class="p">);</span> <span class="nv">$query</span><span class="o">-></span><span class="na">data_seek</span><span class="p">(</span><span class="mi">5</span><span class="p">);</span> <span class="c1">// Skip the first 5 rows</span> <span class="nv">$row</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-></span><span class="na">unbuffered_row</span><span class="p">();</span> </pre></div> </div> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">Not all database drivers support this feature and will return FALSE. Most notably - you won’t be able to use it with PDO.</p> </div> </div> <div class="section" id="class-reference"> <h2><a class="toc-backref" href="#id4">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> <dl class="class"> <dt id="CI_DB_result"> <em class="property">class </em><tt class="descname">CI_DB_result</tt><a class="headerlink" href="#CI_DB_result" title="Permalink to this definition">¶</a></dt> <dd><dl class="method"> <dt id="CI_DB_result::result"> <tt class="descname">result</tt><big>(</big><span class="optional">[</span><em>$type = 'object'</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::result" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$type</strong> (<em>string</em>) – Type of requested results - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array containing the fetched rows</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> </td> </tr> </tbody> </table> <p>A wrapper for the <tt class="docutils literal"><span class="pre">result_array()</span></tt>, <tt class="docutils literal"><span class="pre">result_object()</span></tt> and <tt class="docutils literal"><span class="pre">custom_result_object()</span></tt> methods.</p> <p>Usage: see <a class="reference internal" href="#result-arrays">Result Arrays</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::result_array"> <tt class="descname">result_array</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::result_array" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Array containing the fetched rows</td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td> </tr> </tbody> </table> <p>Returns the query results as an array of rows, where each row is itself an associative array.</p> <p>Usage: see <a class="reference internal" href="#result-arrays">Result Arrays</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::result_object"> <tt class="descname">result_object</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::result_object" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Array containing the fetched rows</td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td> </tr> </tbody> </table> <p>Returns the query results as an array of rows, where each row is an object of type <tt class="docutils literal"><span class="pre">stdClass</span></tt>.</p> <p>Usage: see <a class="reference internal" href="#result-arrays">Result Arrays</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::custom_result_object"> <tt class="descname">custom_result_object</tt><big>(</big><em>$class_name</em><big>)</big><a class="headerlink" href="#CI_DB_result::custom_result_object" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$class_name</strong> (<em>string</em>) – Class name for the resulting rows</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array containing the fetched rows</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> </td> </tr> </tbody> </table> <p>Returns the query results as an array of rows, where each row is an instance of the specified class.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::row"> <tt class="descname">row</tt><big>(</big><span class="optional">[</span><em>$n = 0</em><span class="optional">[</span>, <em>$type = 'object'</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$n</strong> (<em>int</em>) – Index of the query results row to be returned</li> <li><strong>$type</strong> (<em>string</em>) – Type of the requested result - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The requested row or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> </td> </tr> </tbody> </table> <p>A wrapper for the <tt class="docutils literal"><span class="pre">row_array()</span></tt>, <tt class="docutils literal"><span class="pre">row_object()</span> <span class="pre">and</span> <span class="pre">``custom_row_object()</span></tt> methods.</p> <p>Usage: see <a class="reference internal" href="#result-rows">Result Rows</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::unbuffered_row"> <tt class="descname">unbuffered_row</tt><big>(</big><span class="optional">[</span><em>$type = 'object'</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::unbuffered_row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$type</strong> (<em>string</em>) – Type of the requested result - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Next row from the result set or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> </td> </tr> </tbody> </table> <p>Fetches the next result row and returns it in the requested form.</p> <p>Usage: see <a class="reference internal" href="#result-rows">Result Rows</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::row_array"> <tt class="descname">row_array</tt><big>(</big><span class="optional">[</span><em>$n = 0</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::row_array" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$n</strong> (<em>int</em>) – Index of the query results row to be returned</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The requested row or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> </td> </tr> </tbody> </table> <p>Returns the requested result row as an associative array.</p> <p>Usage: see <a class="reference internal" href="#result-rows">Result Rows</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::row_object"> <tt class="descname">row_object</tt><big>(</big><span class="optional">[</span><em>$n = 0</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::row_object" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$n</strong> (<em>int</em>) – Index of the query results row to be returned</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The requested row or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">stdClass</p> </td> </tr> </tbody> </table> <p>Returns the requested result row as an object of type <tt class="docutils literal"><span class="pre">stdClass</span></tt>.</p> <p>Usage: see <a class="reference internal" href="#result-rows">Result Rows</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::custom_row_object"> <tt class="descname">custom_row_object</tt><big>(</big><em>$n</em>, <em>$type</em><big>)</big><a class="headerlink" href="#CI_DB_result::custom_row_object" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$n</strong> (<em>int</em>) – Index of the results row to return</li> <li><strong>$class_name</strong> (<em>string</em>) – Class name for the resulting row</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The requested row or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">$type</p> </td> </tr> </tbody> </table> <p>Returns the requested result row as an instance of the requested class.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::data_seek"> <tt class="descname">data_seek</tt><big>(</big><span class="optional">[</span><em>$n = 0</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::data_seek" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$n</strong> (<em>int</em>) – Index of the results row to be returned next</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> </td> </tr> </tbody> </table> <p>Moves the internal results row pointer to the desired offset.</p> <p>Usage: see <a class="reference internal" href="#result-helper-methods">Result Helper Methods</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::set_row"> <tt class="descname">set_row</tt><big>(</big><em>$key</em><span class="optional">[</span>, <em>$value = NULL</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::set_row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$key</strong> (<em>mixed</em>) – Column name or array of key/value pairs</li> <li><strong>$value</strong> (<em>mixed</em>) – Value to assign to the column, $key is a single field name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p> </td> </tr> </tbody> </table> <p>Assigns a value to a particular column.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::next_row"> <tt class="descname">next_row</tt><big>(</big><span class="optional">[</span><em>$type = 'object'</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::next_row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$type</strong> (<em>string</em>) – Type of the requested result - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Next row of result set, or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> </td> </tr> </tbody> </table> <p>Returns the next row from the result set.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::previous_row"> <tt class="descname">previous_row</tt><big>(</big><span class="optional">[</span><em>$type = 'object'</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::previous_row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$type</strong> (<em>string</em>) – Type of the requested result - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Previous row of result set, or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> </td> </tr> </tbody> </table> <p>Returns the previous row from the result set.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::first_row"> <tt class="descname">first_row</tt><big>(</big><span class="optional">[</span><em>$type = 'object'</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::first_row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$type</strong> (<em>string</em>) – Type of the requested result - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">First row of result set, or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> </td> </tr> </tbody> </table> <p>Returns the first row from the result set.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::last_row"> <tt class="descname">last_row</tt><big>(</big><span class="optional">[</span><em>$type = 'object'</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_DB_result::last_row" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> <li><strong>$type</strong> (<em>string</em>) – Type of the requested result - array, object, or class name</li> </ul> </td> </tr> <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Last row of result set, or NULL if it doesn’t exist</p> </td> </tr> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> </td> </tr> </tbody> </table> <p>Returns the last row from the result set.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::num_rows"> <tt class="descname">num_rows</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::num_rows" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Number of rows in the result set</td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td> </tr> </tbody> </table> <p>Returns the number of rows in the result set.</p> <p>Usage: see <a class="reference internal" href="#result-helper-methods">Result Helper Methods</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::num_fields"> <tt class="descname">num_fields</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::num_fields" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Number of fields in the result set</td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td> </tr> </tbody> </table> <p>Returns the number of fields in the result set.</p> <p>Usage: see <a class="reference internal" href="#result-helper-methods">Result Helper Methods</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::field_data"> <tt class="descname">field_data</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::field_data" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Array containing field meta-data</td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td> </tr> </tbody> </table> <p>Generates an array of <tt class="docutils literal"><span class="pre">stdClass</span></tt> objects containing field meta-data.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::free_result"> <tt class="descname">free_result</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::free_result" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body">void</td> </tr> </tbody> </table> <p>Frees a result set.</p> <p>Usage: see <a class="reference internal" href="#result-helper-methods">Result Helper Methods</a>.</p> </dd></dl> <dl class="method"> <dt id="CI_DB_result::list_fields"> <tt class="descname">list_fields</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_DB_result::list_fields" title="Permalink to this definition">¶</a></dt> <dd><table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Array of column names</td> </tr> <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td> </tr> </tbody> </table> <p>Returns an array containing the field names in the result set.</p> </dd></dl> </dd></dl> </div> </div> </div> <footer> <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> <a href="helpers.html" class="btn btn-neutral float-right" title="Query Helper Methods">Next <span class="fa fa-arrow-circle-right"></span></a> <a href="queries.html" class="btn btn-neutral" title="Queries"><span class="fa fa-arrow-circle-left"></span> Previous</a> </div> <hr/> <div role="contentinfo"> <p> © Copyright 2014 - 2015, British Columbia Institute of Technology. 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