<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Used to modify the behavior of a prepared statement</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mysqli-stmt.attr-get.html">mysqli_stmt::attr_get</a></div> <div class="next" style="text-align: right; float: right;"><a href="mysqli-stmt.bind-param.html">mysqli_stmt::bind_param</a></div> <div class="up"><a href="class.mysqli-stmt.html">mysqli_stmt</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="mysqli-stmt.attr-set" class="refentry"> <div class="refnamediv"> <h1 class="refname">mysqli_stmt::attr_set</h1> <h1 class="refname">mysqli_stmt_attr_set</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli_stmt::attr_set</span> -- <span class="refname">mysqli_stmt_attr_set</span> — <span class="dc-title">Used to modify the behavior of a prepared statement</span></p> </div> <div class="refsect1 description" id="refsect1-mysqli-stmt.attr-set-description"> <h3 class="title">Description</h3> <p class="para">Object oriented style</p> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>mysqli_stmt::attr_set</strong></span> ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$attr</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$mode</code></span> )</div> <p class="para rdfs-comment">Procedural style</p> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>mysqli_stmt_attr_set</strong></span> ( <span class="methodparam"><span class="type"><a href="class.mysqli-stmt.html" class="type mysqli_stmt">mysqli_stmt</a></span> <code class="parameter">$stmt</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$attr</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$mode</code></span> )</div> <p class="para rdfs-comment"> Used to modify the behavior of a prepared statement. This function may be called multiple times to set several attributes. </p> </div> <div class="refsect1 parameters" id="refsect1-mysqli-stmt.attr-set-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter"> stmt</code></em></span><dd> <p class="para">Procedural style only: A statement identifier returned by <span class="function"><a href="mysqli.stmt-init.html" class="function">mysqli_stmt_init()</a></span>.</p></dd> </dt> <dt> <span class="term"><em><code class="parameter">attr</code></em></span> <dd> <p class="para"> The attribute that you want to set. It can have one of the following values: <table class="doctable table"> <caption><strong>Attribute values</strong></caption> <thead> <tr> <th>Character</th> <th>Description</th> </tr> </thead> <tbody class="tbody"> <tr> <td>MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH</td> <td> If set to 1, causes <span class="function"><a href="mysqli-stmt.store-result.html" class="function">mysqli_stmt_store_result()</a></span> to update the metadata <em>MYSQL_FIELD->max_length</em> value. </td> </tr> <tr> <td>MYSQLI_STMT_ATTR_CURSOR_TYPE</td> <td> Type of cursor to open for statement when <span class="function"><a href="mysqli-stmt.execute.html" class="function">mysqli_stmt_execute()</a></span> is invoked. <em><code class="parameter">mode</code></em> can be <em>MYSQLI_CURSOR_TYPE_NO_CURSOR</em> (the default) or <em>MYSQLI_CURSOR_TYPE_READ_ONLY</em>. </td> </tr> <tr> <td>MYSQLI_STMT_ATTR_PREFETCH_ROWS</td> <td> Number of rows to fetch from server at a time when using a cursor. <em><code class="parameter">mode</code></em> can be in the range from 1 to the maximum value of unsigned long. The default is 1. </td> </tr> </tbody> </table> </p> <p class="para"> If you use the <em>MYSQLI_STMT_ATTR_CURSOR_TYPE</em> option with <em>MYSQLI_CURSOR_TYPE_READ_ONLY</em>, a cursor is opened for the statement when you invoke <span class="function"><a href="mysqli-stmt.execute.html" class="function">mysqli_stmt_execute()</a></span>. If there is already an open cursor from a previous <span class="function"><a href="mysqli-stmt.execute.html" class="function">mysqli_stmt_execute()</a></span> call, it closes the cursor before opening a new one. <span class="function"><a href="mysqli-stmt.reset.html" class="function">mysqli_stmt_reset()</a></span> also closes any open cursor before preparing the statement for re-execution. <span class="function"><a href="mysqli-stmt.free-result.html" class="function">mysqli_stmt_free_result()</a></span> closes any open cursor. </p> <p class="para"> If you open a cursor for a prepared statement, <span class="function"><a href="mysqli-stmt.store-result.html" class="function">mysqli_stmt_store_result()</a></span> is unnecessary. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">mode</code></em></span> <dd> <p class="para">The value to assign to the attribute.</p> </dd> </dt> </dl> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mysqli-stmt.attr-get.html">mysqli_stmt::attr_get</a></div> <div class="next" style="text-align: right; float: right;"><a href="mysqli-stmt.bind-param.html">mysqli_stmt::bind_param</a></div> <div class="up"><a href="class.mysqli-stmt.html">mysqli_stmt</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>