📄 function.xslt-set-scheme-handlers.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>Set the scheme handlers for the XSLT processor</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.xslt-set-scheme-handler.html">xslt_set_scheme_handler</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.xslt-setopt.html">xslt_setopt</a></div> <div class="up"><a href="ref.xslt.html">XSLT Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.xslt-set-scheme-handlers" class="refentry"> <div class="refnamediv"> <h1 class="refname">xslt_set_scheme_handlers</h1> <p class="verinfo">(PHP 4 >= 4.0.6)</p><p class="refpurpose"><span class="refname">xslt_set_scheme_handlers</span> — <span class="dc-title">Set the scheme handlers for the XSLT processor</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><span class="type void">void</span></span> <span class="methodname"><b><b>xslt_set_scheme_handlers</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$xh</tt></span> , <span class="methodparam"><span class="type">array</span> <tt class="parameter">$handlers</tt></span> )</div> <p class="para rdfs-comment"> Registers the scheme handlers (XPath handlers) for the document. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">xh</tt></i></span> <dd> <p class="para"> The XSLT processor link identifier, created with <a href="function.xslt-create.html" class="function">xslt_create()</a>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">handlers</tt></i></span> <dd> <p class="para"> An array with the following keys: "get_all", "open", "get", "put", and "close". </p> <p class="para"> Every entry must be a function name or an array in the following format: array($obj, "method"). </p> <p class="para"> Note that the given array does not need to contain all of the different scheme handler elements (although it can), but it only needs to conform to the "handler" => "function" format described above. </p> <p class="para"> Each of the individual scheme handler functions called are in the formats below: <div class="example-contents"><pre><div class="cdata"><pre>string get_all(resource processor, string scheme, string rest)resource open(resource processor, string scheme, string rest)int get(resource processor, resource fp, string &data)int put(resource processor, resource fp, string data)void close(resource processor, resource fp)</pre></div> </pre></div> </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> No value is returned. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>xslt_set_scheme_handlers()</b> example</b></p> <div class="example-contents"><p> For example, here is an implementation of the "file_exists()" PHP function. </p></div> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// Definition of the handler<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">mySchemeHandler</span><span style="color: #007700">(</span><span style="color: #0000BB">$processor</span><span style="color: #007700">, </span><span style="color: #0000BB">$scheme</span><span style="color: #007700">, </span><span style="color: #0000BB">$rest</span><span style="color: #007700">)<br />{<br /> </span><span style="color: #0000BB">$rest </span><span style="color: #007700">= </span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">$rest</span><span style="color: #007700">,</span><span style="color: #0000BB">1</span><span style="color: #007700">); </span><span style="color: #FF8000">// to remove the first / automatically added by the engine<br /> </span><span style="color: #007700">if (</span><span style="color: #0000BB">$scheme </span><span style="color: #007700">== </span><span style="color: #DD0000">'file_exists'</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">// result is embedded in a small xml string<br /> </span><span style="color: #007700">return </span><span style="color: #DD0000">'<?xml version="1.0" encoding="UTF-8"?><root>' </span><span style="color: #007700">. (</span><span style="color: #0000BB">file_exists</span><span style="color: #007700">(</span><span style="color: #0000BB">$rest</span><span style="color: #007700">) ? </span><span style="color: #DD0000">'true' </span><span style="color: #007700">: </span><span style="color: #DD0000">'false'</span><span style="color: #007700">) . </span><span style="color: #DD0000">'</root>'</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">$SchemeHandlerArray </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'get_all' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'mySchemeHandler'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Start the engine<br /></span><span style="color: #0000BB">$params </span><span style="color: #007700">= array();<br /></span><span style="color: #0000BB">$xh </span><span style="color: #007700">= </span><span style="color: #0000BB">xslt_create</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">xslt_set_scheme_handlers</span><span style="color: #007700">(</span><span style="color: #0000BB">$xh</span><span style="color: #007700">, </span><span style="color: #0000BB">$SchemeHandlerArray</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">xslt_process</span><span style="color: #007700">(</span><span style="color: #0000BB">$xh</span><span style="color: #007700">, </span><span style="color: #DD0000">"myFile.xml"</span><span style="color: #007700">, </span><span style="color: #DD0000">"myFile.xsl"</span><span style="color: #007700">, </span><span style="color: #0000BB">NULL</span><span style="color: #007700">, array(), </span><span style="color: #0000BB">$params</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">xslt_free</span><span style="color: #007700">(</span><span style="color: #0000BB">$xh</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">$result</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p> Then, inside the stylesheet, you can test whether a certain file exists with: </p></div> <div class="example-contents"><div class="cdata"><pre><xsl:if test="document('file_exists:anotherXMLfile.xml')/root='true'"> <!-- The file exist --></xsl:if></pre></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.xslt-set-scheme-handler.html" class="function" rel="rdfs-seeAlso">xslt_set_scheme_handler()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.xslt-set-scheme-handler.html">xslt_set_scheme_handler</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.xslt-setopt.html">xslt_setopt</a></div> <div class="up"><a href="ref.xslt.html">XSLT 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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