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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>Finds the last occurrence of a needle within a haystack</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.iconv-strpos.html">iconv_strpos</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.iconv-substr.html">iconv_substr</a></div> <div class="up"><a href="ref.iconv.html">iconv Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.iconv-strrpos" class="refentry"> <div class="refnamediv"> <h1 class="refname">iconv_strrpos</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">iconv_strrpos</span> — <span class="dc-title">Finds the last occurrence of a needle within a haystack</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>iconv_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">string</span> <tt class="parameter">$charset</tt></span> ] )</div> <p class="para rdfs-comment"> In contrast to <a href="function.strpos.html" class="function">strpos()</a>, the return value of <b>iconv_strrpos()</b> is the number of characters that appear before the needle, rather than the offset in bytes to the position where the needle has been found. </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 entire string. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">needle</tt></i></span> <dd> <p class="para"> The searched substring. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">charset</tt></i></span> <dd> <p class="para"> If <i><tt class="parameter">charset</tt></i> parameter is omitted, <i><tt class="parameter">string</tt></i> are assumed to be encoded in <a href="iconv.configuration.html" class="link">iconv.internal_encoding</a>. </p> </dd> </dt> </dl> </p> <p class="para"> If <i><tt class="parameter">haystack</tt></i> or <i><tt class="parameter">needle</tt></i> is not a string, it is converted to a string and applied as the ordinal value of a character. </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 <i><tt class="parameter">haystack</tt></i>. The characters are counted on the basis of the specified character set <i><tt class="parameter">charset</tt></i>. </p> <p class="para"> If <i><tt class="parameter">needle</tt></i> is not found, <b>iconv_strrpos()</b> will return <b><tt>FALSE</tt></b>. </p> <div class="warning"><b class="warning">Warning</b><p class="simpara">This function mayreturn Boolean <b><tt>FALSE</tt></b>, but may also return a non-Boolean value whichevaluates to <b><tt>FALSE</tt></b>, such as <i>0</i> or"". Please read the section on <a href="language.types.boolean.html" class="link">Booleans</a> for moreinformation. Use <a href="language.operators.comparison.html" class="link">the ===operator</a> for testing the return value of thisfunction.</p></div> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.strrpos.html" class="function" rel="rdfs-seeAlso">strrpos()</a></li> <li class="member"><a href="function.iconv-strpos.html" class="function" rel="rdfs-seeAlso">iconv_strpos()</a></li> <li class="member"><a href="function.mb-strrpos.html" class="function" rel="rdfs-seeAlso">mb_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.iconv-strpos.html">iconv_strpos</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.iconv-substr.html">iconv_substr</a></div> <div class="up"><a href="ref.iconv.html">iconv 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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