<!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>Perform case folding on a code point</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="intlchar.enumchartypes.html">IntlChar::enumCharTypes</a></div> <div class="next" style="text-align: right; float: right;"><a href="intlchar.fordigit.html">IntlChar::forDigit</a></div> <div class="up"><a href="class.intlchar.html">IntlChar</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="intlchar.foldcase" class="refentry"> <div class="refnamediv"> <h1 class="refname">IntlChar::foldCase</h1> <p class="verinfo">(PHP 7)</p><p class="refpurpose"><span class="refname">IntlChar::foldCase</span> — <span class="dc-title">Perform case folding on a code point</span></p> </div> <div class="refsect1 description" id="refsect1-intlchar.foldcase-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="modifier">static</span> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>IntlChar::foldCase</strong></span> ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$codepoint</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code><span class="initializer"> = <strong><code>IntlChar::FOLD_CASE_DEFAULT</code></strong></span></span> ] )</div> <p class="para rdfs-comment"> The given character is mapped to its case folding equivalent; if the character has no case folding equivalent, the character itself is returned. </p> </div> <div class="refsect1 parameters" id="refsect1-intlchar.foldcase-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <code class="parameter">codepoint</code></dt> <dd> <p class="para">The <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> codepoint value (e.g. <em>0x2603</em> for <em class="emphasis">U+2603 SNOWMAN</em>), or the character encoded as a UTF-8 <span class="type"><a href="language.types.string.html" class="type string">string</a></span> (e.g. <em>"\u{2603}"</em>)</p> </dd> <dt> <code class="parameter">options</code></dt> <dd> <p class="para"> Either <strong><code>IntlChar::FOLD_CASE_DEFAULT</code></strong> (default) or <strong><code>IntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I</code></strong>. </p> </dd> </dl> </div> <div class="refsect1 returnvalues" id="refsect1-intlchar.foldcase-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the <em class="emphasis">Simple_Case_Folding</em> of the code point, if any; otherwise the code point itself. </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="intlchar.enumchartypes.html">IntlChar::enumCharTypes</a></div> <div class="next" style="text-align: right; float: right;"><a href="intlchar.fordigit.html">IntlChar::forDigit</a></div> <div class="up"><a href="class.intlchar.html">IntlChar</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>