<!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>Asks the server to kill a MySQL thread</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mysqli.insert-id.html">mysqli::$insert_id</a></div> <div class="next" style="text-align: right; float: right;"><a href="mysqli.more-results.html">mysqli::more_results</a></div> <div class="up"><a href="class.mysqli.html">mysqli</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="mysqli.kill" class="refentry"> <div class="refnamediv"> <h1 class="refname">mysqli::kill</h1> <h1 class="refname">mysqli_kill</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::kill</span> -- <span class="refname">mysqli_kill</span> — <span class="dc-title">Asks the server to kill a MySQL thread</span></p> </div> <div class="refsect1 description" id="refsect1-mysqli.kill-description"> <h3 class="title">Description</h3> <p class="para">Object oriented style</p> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>mysqli::kill</strong></span> ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$processid</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_kill</strong></span> ( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter">$link</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$processid</code></span> )</div> <p class="para rdfs-comment"> This function is used to ask the server to kill a MySQL thread specified by the <em><code class="parameter">processid</code></em> parameter. This value must be retrieved by calling the <span class="function"><a href="mysqli.thread-id.html" class="function">mysqli_thread_id()</a></span> function. </p> <p class="para"> To stop a running query you should use the SQL command <em>KILL QUERY processid</em>. </p> </div> <div class="refsect1 parameters" id="refsect1-mysqli.kill-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter"> link</code></em></span><dd> <p class="para">Procedural style only: A link identifier returned by <span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span> or <span class="function"><a href="mysqli.init.html" class="function">mysqli_init()</a></span> </p></dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-mysqli.kill-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure. </p> </div> <div class="refsect1 examples" id="refsect1-mysqli.kill-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-1673"> <p><strong>Example #1 <span class="methodname"><strong>mysqli::kill()</strong></span> example</strong></p> <div class="example-contents"><p>Object oriented style</p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #FF8000">/* determine our thread id */<br /></span><span style="color: #0000BB">$thread_id </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">thread_id</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* Kill connection */<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">kill</span><span style="color: #007700">(</span><span style="color: #0000BB">$thread_id</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* This should produce an error */<br /></span><span style="color: #007700">if (!</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE myCity LIKE City"</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Error: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">error</span><span style="color: #007700">);<br /> exit;<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>Procedural style</p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #FF8000">/* determine our thread id */<br /></span><span style="color: #0000BB">$thread_id </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqli_thread_id</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Kill connection */<br /></span><span style="color: #0000BB">mysqli_kill</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$thread_id</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* This should produce an error */<br /></span><span style="color: #007700">if (!</span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"CREATE TABLE myCity LIKE City"</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Error: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">));<br /> exit;<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">mysqli_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above examples will output:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> Error: MySQL server has gone away </pre></div> </div> </div> </div> <div class="refsect1 seealso" id="refsect1-mysqli.kill-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="mysqli.thread-id.html" class="function" rel="rdfs-seeAlso">mysqli_thread_id()</a> - Returns the thread ID for the current connection</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mysqli.insert-id.html">mysqli::$insert_id</a></div> <div class="next" style="text-align: right; float: right;"><a 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