<!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>Find position (in grapheme units) of first occurrence of a string</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.grapheme-strlen.html">grapheme_strlen</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.grapheme-strripos.html">grapheme_strripos</a></div> <div class="up"><a href="ref.intl.grapheme.html">Grapheme Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.grapheme-strpos" class="refentry"> <div class="refnamediv"> <h1 class="refname">grapheme_strpos</h1> <p class="verinfo">(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)</p><p class="refpurpose"><span class="refname">grapheme_strpos</span> — <span class="dc-title">Find position (in grapheme units) of first occurrence of a string</span></p> </div> <div class="refsect1 description" id="refsect1-function.grapheme-strpos-description"> <h3 class="title">Description</h3> <p class="para">Procedural style</p> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><strong>grapheme_strpos</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$haystack</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$needle</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$offset</code><span class="initializer"> = 0</span></span> ] )</div> <p class="para rdfs-comment"> Find position (in grapheme units) of first occurrence of a string </p> </div> <div class="refsect1 parameters" id="refsect1-function.grapheme-strpos-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">haystack</code></em></span> <dd> <p class="para"> The string to look in. Must be valid UTF-8. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">needle</code></em></span> <dd> <p class="para"> The string to look for. Must be valid UTF-8. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">offset</code></em></span> <dd> <p class="para"> The optional $offset parameter allows you to specify where in $haystack to start searching as an offset in grapheme units (not bytes or characters). The position returned is still relative to the beginning of haystack regardless of the value of $offset. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.grapheme-strpos-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the position as an integer. If needle is not found, strpos() will return boolean FALSE. </p> </div> <div class="refsect1 examples" id="refsect1-function.grapheme-strpos-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-2682"> <p><strong>Example #1 <span class="function"><strong>grapheme_strpos()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /><br />$char_a_ring_nfd </span><span style="color: #007700">= </span><span style="color: #DD0000">"a\xCC\x8A"</span><span style="color: #007700">; </span><span style="color: #FF8000">// 'LATIN SMALL LETTER A WITH RING ABOVE' (U+00E5) normalization form "D"<br /></span><span style="color: #0000BB">$char_o_diaeresis_nfd </span><span style="color: #007700">= </span><span style="color: #DD0000">"o\xCC\x88"</span><span style="color: #007700">; </span><span style="color: #FF8000">// 'LATIN SMALL LETTER O WITH DIAERESIS' (U+00F6) normalization form "D"<br /><br /></span><span style="color: #007700">print </span><span style="color: #0000BB">grapheme_strpos</span><span style="color: #007700">( </span><span style="color: #0000BB">$char_a_ring_nfd </span><span style="color: #007700">. </span><span style="color: #0000BB">$char_a_ring_nfd </span><span style="color: #007700">. </span><span style="color: #0000BB">$char_o_diaeresis_nfd</span><span style="color: #007700">, </span><span style="color: #0000BB">$char_o_diaeresis_nfd</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> <p class="para">The above example will output:</p> <div class="example-contents screen"> <div class="cdata"><pre> 2 </pre></div> </div> </div> <div class="refsect1 seealso" id="refsect1-function.grapheme-strpos-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.grapheme-stripos.html" class="function" rel="rdfs-seeAlso">grapheme_stripos()</a> - Find position (in grapheme units) of first occurrence of a case-insensitive string</span></li> <li class="member"> <span class="function"><a href="function.grapheme-stristr.html" class="function" rel="rdfs-seeAlso">grapheme_stristr()</a> - Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack.</span></li> <li class="member"> <span class="function"><a href="function.grapheme-strripos.html" class="function" rel="rdfs-seeAlso">grapheme_strripos()</a> - Find position (in grapheme units) of last occurrence of a case-insensitive string</span></li> <li class="member"> <span class="function"><a href="function.grapheme-strrpos.html" class="function" rel="rdfs-seeAlso">grapheme_strrpos()</a> - Find position (in grapheme units) of last occurrence of a string</span></li> <li class="member"> <span class="function"><a href="function.grapheme-strstr.html" class="function" rel="rdfs-seeAlso">grapheme_strstr()</a> - Returns part of haystack string from the first occurrence of needle to the end of haystack.</span></li> <li class="member"> <a href="http://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries" class="link external">» Unicode Text Segmentation: Grapheme Cluster Boundaries </a> </li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.grapheme-strlen.html">grapheme_strlen</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.grapheme-strripos.html">grapheme_strripos</a></div> <div class="up"><a href="ref.intl.grapheme.html">Grapheme Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>