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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>Extracts a range of data from the node</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="class.domcharacterdata.html">DOMCharacterData</a></div> <div class="next" style="text-align: right; float: right;"><a href="class.domcomment.html">DOMComment</a></div> <div class="up"><a href="class.domcharacterdata.html">DOMCharacterData</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="domcharacterdata.substringdata" class="refentry"> <div class="refnamediv"> <h1 class="refname">DOMCharacterData::substringData</h1> <p class="verinfo">(No version information available, might be only in CVS)</p><p class="refpurpose"><span class="refname">DOMCharacterData::substringData</span> — <span class="dc-title"> Extracts a range of data from the node </span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><b>DOMCharacterData::substringData</b></b></span> ( <span class="methodparam"><span class="type">int</span> <tt class="parameter">$offset</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$count</tt></span> )</div> <p class="para rdfs-comment"> Returns the specified substring. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">offset</tt></i></span> <dd> <p class="para"> Start offset of substring to extract. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">count</tt></i></span> <dd> <p class="para"> The number of characters to extract. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The specified substring. If the sum of <i><tt class="parameter">offset</tt></i> and <i><tt class="parameter">count</tt></i> exceeds the length, then all 16-bit units to the end of the data are returned. </p> </div> <div class="refsect1 errors"> <h3 class="title">Errors/Exceptions</h3> <p class="para"> <dl> <dt> <span class="term"><b><tt>DOM_INDEX_SIZE_ERR</tt></b></span> <dd> <p class="para"> Raised if <i><tt class="parameter">offset</tt></i> is negative or greater than the number of 16-bit units in data, or if <i><tt class="parameter">count</tt></i> is negative. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="domcharacterdata.appenddata.html" class="xref">DOMCharacterData::appendData</a></li> <li class="member"><a href="domcharacterdata.deletedata.html" class="xref">DOMCharacterData::deleteData</a></li> <li class="member"><a href="domcharacterdata.insertdata.html" class="xref">DOMCharacterData::insertData</a></li> <li class="member"><a href="domcharacterdata.replacedata.html" class="xref">DOMCharacterData::replaceData</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="class.domcharacterdata.html">DOMCharacterData</a></div> <div class="next" style="text-align: right; float: right;"><a href="class.domcomment.html">DOMComment</a></div> <div class="up"><a href="class.domcharacterdata.html">DOMCharacterData</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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