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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>Compression Streams</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="wrappers.php.html">PHP input/output streams</a></div> <div class="next" style="text-align: right; float: right;"><a href="wrappers.data.html">Data (RFC 2397)</a></div> <div class="up"><a href="wrappers.html">List of Supported Protocols/Wrappers</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="wrappers.compression" class="section"> <h2 class="title">Compression Streams</h2> <p class="simpara"><var class="filename">zlib:</var> PHP 4.0.4 - PHP 4.2.3 (systems with fopencookie only)</p> <p class="simpara"><var class="filename">compress.zlib://</var> and <var class="filename">compress.bzip2://</var> PHP 4.3.0 and up</p> <ul class="itemizedlist"> <li class="listitem"><span class="simpara"><var class="filename">zlib:</var></span></li> <li class="listitem"><span class="simpara"><var class="filename">compress.zlib://</var></span></li> <li class="listitem"><span class="simpara"><var class="filename">compress.bzip2://</var></span></li> </ul> <p class="simpara"> <var class="filename">zlib:</var> works like <a href="function.gzopen.html" class="function">gzopen()</a>, except that the stream can be used with <a href="function.fread.html" class="function">fread()</a> and the other filesystem functions. This is deprecated as of PHP 4.3.0 due to ambiguities with filenames containing ':' characters; use <var class="filename">compress.zlib://</var> instead. </p> <p class="simpara"> <var class="filename">compress.zlib://</var> and <var class="filename">compress.bzip2://</var> are equivalent to <a href="function.gzopen.html" class="function">gzopen()</a> and <a href="function.bzopen.html" class="function">bzopen()</a> respectively, and operate even on systems that do not support fopencookie. </p> <p class="para"> <table border="5"> <caption><b>Wrapper Summary</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Attribute</th> <th colspan="1">Supported</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Restricted by <a href="filesystem.configuration.html#ini.allow-url-fopen" class="link">allow_url_fopen</a></td> <td colspan="1" rowspan="1" align="left">No</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Allows Reading</td> <td colspan="1" rowspan="1" align="left">Yes</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Allows Writing</td> <td colspan="1" rowspan="1" align="left">Yes</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Allows Appending</td> <td colspan="1" rowspan="1" align="left">Yes</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Allows Simultaneous Reading and Writing</td> <td colspan="1" rowspan="1" align="left">No</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Supports <a href="function.stat.html" class="function">stat()</a></td> <td colspan="1" rowspan="1" align="left"> No, use the normal <i>file://</i> wrapper to stat compressed files. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Supports <a href="function.unlink.html" class="function">unlink()</a></td> <td colspan="1" rowspan="1" align="left"> No, use the normal <i>file://</i> wrapper to unlink compressed files. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Supports <a href="function.rename.html" class="function">rename()</a></td> <td colspan="1" rowspan="1" align="left">No</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Supports <a href="function.mkdir.html" class="function">mkdir()</a></td> <td colspan="1" rowspan="1" align="left">No</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Supports <a href="function.rmdir.html" class="function">rmdir()</a></td> <td colspan="1" rowspan="1" align="left">No</td> </tr> </tbody> </colgroup> </table> </p> <p class="para"> <a href="ref.zip.html" class="link">ZIP extension</a> registers <var class="filename">zip:</var> wrapper. </p> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="wrappers.php.html">PHP input/output streams</a></div> <div class="next" style="text-align: right; float: right;"><a href="wrappers.data.html">Data (RFC 2397)</a></div> <div class="up"><a href="wrappers.html">List of Supported Protocols/Wrappers</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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