function.mb-strrpos.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Find position of last occurrence of a string in a string</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.mb-strripos.html">mb_strripos</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.mb-strstr.html">mb_strstr</a></div> <div class="up"><a href="ref.mbstring.html">Multibyte String Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.mb-strrpos" class="refentry"> <div class="refnamediv"> <h1 class="refname">mb_strrpos</h1> <p class="verinfo">(PHP 4 >= 4.0.6, PHP 5)</p><p class="refpurpose"><span class="refname">mb_strrpos</span> — <span class="dc-title">Find position of last occurrence of a string in a string</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>mb_strrpos</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$haystack</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$needle</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$offset</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$encoding</tt></span> ]] )</div> <p class="para rdfs-comment"> Performs a multibyte safe <a href="function.strrpos.html" class="function">strrpos()</a> operation based on the number of characters. <i><tt class="parameter">needle</tt></i> position is counted from the beginning of <i><tt class="parameter">haystack</tt></i>. First character's position is 0. Second character position is 1. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">haystack</tt></i></span> <dd> <p class="para"> The <a href="language.types.string.html" class="type string">string</a> being checked, for the last occurrence of <i><tt class="parameter">needle</tt></i> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">needle</tt></i></span> <dd> <p class="para"> The <a href="language.types.string.html" class="type string">string</a> to find in <i><tt class="parameter">haystack</tt></i>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">offset</tt></i></span> <dd> <span class="simpara"> May be specified to begin searching an arbitrary number of characters into the <a href="language.types.string.html" class="type string">string</a>. Negative values will stop searching at an arbitrary point prior to the end of the <a href="language.types.string.html" class="type string">string</a>. </span> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">encoding</tt></i></span> <dd> <p class="para">The <i><tt class="parameter">encoding</tt></i> parameter is the character encoding. If it is omitted, the internal character encoding value will be used.</p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the numeric position of the last occurrence of <i><tt class="parameter">needle</tt></i> in the <i><tt class="parameter">haystack</tt></i> <a href="language.types.string.html" class="type string">string</a>. If <i><tt class="parameter">needle</tt></i> is not found, it returns <b><tt>FALSE</tt></b>. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.2.0</td> <td colspan="1" rowspan="1" align="left">Added the optional parameter <i><tt class="parameter">offset</tt></i>.</td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: <span class="simpara"> The <i><tt class="parameter">encoding</tt></i> parameter was moved from the third position to the fourth in PHP 5.2.0. For backward compatibility, <i><tt class="parameter">encoding</tt></i> can be specified as the third parameter, but doing so is deprecated and will be removed in the future. </span> </p></blockquote> <blockquote><p><b class="note">Note</b>: The internal encoding or the character encoding specified by <a href="function.mb-regex-encoding.html" class="function">mb_regex_encoding()</a> will be used as the character encoding for this function.<br /></p></blockquote> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.mb-strpos.html" class="function" rel="rdfs-seeAlso">mb_strpos()</a></li> <li class="member"><a href="function.mb-internal-encoding.html" class="function" rel="rdfs-seeAlso">mb_internal_encoding()</a></li> <li class="member"><a href="function.strrpos.html" class="function" rel="rdfs-seeAlso">strrpos()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.mb-strripos.html">mb_strripos</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.mb-strstr.html">mb_strstr</a></div> <div class="up"><a href="ref.mbstring.html">Multibyte String Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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