<!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>Compress data with the specified encoding</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.zlib-decode.html">zlib_decode</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.zlib-get-coding-type.html">zlib_get_coding_type</a></div> <div class="up"><a href="ref.zlib.html">Zlib Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.zlib-encode" class="refentry"> <div class="refnamediv"> <h1 class="refname">zlib_encode</h1> <p class="verinfo">(PHP 5 >= 5.4.0, PHP 7)</p><p class="refpurpose"><span class="refname">zlib_encode</span> — <span class="dc-title">Compress data with the specified encoding</span></p> </div> <div class="refsect1 description" id="refsect1-function.zlib-encode-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><strong>zlib_encode</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$encoding</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$level</code><span class="initializer"> = -1</span></span> ] )</div> <p class="para rdfs-comment"> Compress data with the specified encoding. </p> <div class="warning"><strong class="warning">Warning</strong><p class="simpara">This function is currently not documented; only its argument list is available. </p></div> </div> <div class="refsect1 parameters" id="refsect1-function.zlib-encode-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <code class="parameter">data</code></dt> <dd> <p class="para"> The data to compress. </p> </dd> <dt> <code class="parameter">encoding</code></dt> <dd> <p class="para"> The compression algorithm. Either <strong><code>ZLIB_ENCODING_RAW</code></strong>, <strong><code>ZLIB_ENCODING_DEFLATE</code></strong> or <strong><code>ZLIB_ENCODING_GZIP</code></strong>. </p> </dd> <dt> <code class="parameter">level</code></dt> <dd> <p class="para"> </p> </dd> </dl> </div> <div class="refsect1 returnvalues" id="refsect1-function.zlib-encode-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> </p> </div> <div class="refsect1 examples" id="refsect1-function.zlib-encode-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-917"> <p><strong>Example #1 <span class="function"><strong>zlib_encode()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$str </span><span style="color: #007700">= </span><span style="color: #DD0000">'hello world'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$enc </span><span style="color: #007700">= </span><span style="color: #0000BB">zlib_encode</span><span style="color: #007700">(</span><span style="color: #0000BB">$str</span><span style="color: #007700">, </span><span style="color: #0000BB">ZLIB_ENCODING_DEFLATE</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">bin2hex</span><span style="color: #007700">(</span><span style="color: #0000BB">$enc</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> 789ccb48cdc9c95728cf2fca4901001a0b045d </pre></div> </div> </div> </div> <div class="refsect1 seealso" id="refsect1-function.zlib-encode-seealso"> <h3 class="title">See Also</h3> <ul class="simplelist"> <li class="member"><span class="function"><a href="function.zlib-decode.html" class="function" rel="rdfs-seeAlso">zlib_decode()</a> - Uncompress any raw/gzip/zlib encoded data</span></li> </ul> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.zlib-decode.html">zlib_decode</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.zlib-get-coding-type.html">zlib_get_coding_type</a></div> <div class="up"><a href="ref.zlib.html">Zlib Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>