📄 function.urldecode.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>Decodes URL-encoded string</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.rawurlencode.html">rawurlencode</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.urlencode.html">urlencode</a></div> <div class="up"><a href="ref.url.html">URL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.urldecode" class="refentry"> <div class="refnamediv"> <h1 class="refname">urldecode</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">urldecode</span> — <span class="dc-title">Decodes URL-encoded string</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>urldecode</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$str</tt></span> )</div> <p class="para rdfs-comment"> Decodes any <i>%<span class="replaceable">##</span></i> encoding in the given string. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">str</tt></i></span> <dd> <p class="para"> The string to be decoded. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the decoded string. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>urldecode()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$a </span><span style="color: #007700">= </span><span style="color: #0000BB">explode</span><span style="color: #007700">(</span><span style="color: #DD0000">'&'</span><span style="color: #007700">, </span><span style="color: #0000BB">$QUERY_STRING</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">;<br />while (</span><span style="color: #0000BB">$i </span><span style="color: #007700">< </span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">$b </span><span style="color: #007700">= </span><span style="color: #0000BB">split</span><span style="color: #007700">(</span><span style="color: #DD0000">'='</span><span style="color: #007700">, </span><span style="color: #0000BB">$a</span><span style="color: #007700">[</span><span style="color: #0000BB">$i</span><span style="color: #007700">]);<br /> echo </span><span style="color: #DD0000">'Value for parameter '</span><span style="color: #007700">, </span><span style="color: #0000BB">htmlspecialchars</span><span style="color: #007700">(</span><span style="color: #0000BB">urldecode</span><span style="color: #007700">(</span><span style="color: #0000BB">$b</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">])),<br /> </span><span style="color: #DD0000">' is '</span><span style="color: #007700">, </span><span style="color: #0000BB">htmlspecialchars</span><span style="color: #007700">(</span><span style="color: #0000BB">urldecode</span><span style="color: #007700">(</span><span style="color: #0000BB">$b</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">])), </span><span style="color: #DD0000">"<br />\n"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$i</span><span style="color: #007700">++;<br />}<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <div class="warning"><b class="warning">Warning</b> <p class="para"> The superglobals <var class="varname"><a href="reserved.variables.get.html" class="classname">$_GET</a></var> and <var class="varname"><a href="reserved.variables.request.html" class="classname">$_REQUEST</a></var> are already decoded. Using <b>urldecode()</b> on an element in <var class="varname"><a href="reserved.variables.get.html" class="classname">$_GET</a></var> or <var class="varname"><a href="reserved.variables.request.html" class="classname">$_REQUEST</a></var> could have unexpected and dangerous results. </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.urlencode.html" class="function" rel="rdfs-seeAlso">urlencode()</a></li> <li class="member"><a href="function.rawurlencode.html" class="function" rel="rdfs-seeAlso">rawurlencode()</a></li> <li class="member"><a href="function.rawurldecode.html" class="function" rel="rdfs-seeAlso">rawurldecode()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.rawurlencode.html">rawurlencode</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.urlencode.html">urlencode</a></div> <div class="up"><a href="ref.url.html">URL 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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