PHP擴展之壓縮與歸檔擴展4——Zlib
大多數文件系統函數使用gzip來壓縮文件，本模塊可以幫助透明讀取gzip壓縮文件。
在PHP中Zlib支持默認并沒有開啟。需要安裝配置 PHP的時候使用?--with-zlib[=DIR]。
下面這個例子開啟了一個臨時文件來寫入測試字符串，然后兩次打印文件內容。
Example #1 簡單的Zlib示例
<?php $filename = tempnam(’/tmp’, ’zlibtest’) . ’.gz’; echo '<html>n<head></head>n<body>n<pre>n'; $s = 'Only a test, test, test, test, test, test, test, test!n'; // open file for writing with maximum compression $zp = gzopen($filename, 'w9'); // write string to file gzwrite($zp, $s); // close file gzclose($zp); // open file for reading $zp = gzopen($filename, 'r'); // read 3 char echo gzread($zp, 3); // output until end of the file and close it. gzpassthru($zp); gzclose($zp); echo 'n'; // open file and print content (the 2nd time). if (readgzfile($filename) != strlen($s)) {echo 'Error with zlib functions!'; } unlink($filename); echo '</pre>n</body>n</html>n';?>
?相關函數：
gzclose?— Close an open gz-file pointergzcompress?— Compress a stringgzdecode?— Decodes a gzip compressed stringgzdeflate?— Deflate a stringgzencode?— Create a gzip compressed stringgzeof?— Test for EOF on a gz-file pointergzfile?— Read entire gz-file into an arraygzgetc?— Get character from gz-file pointergzgets?— Get line from file pointergzgetss?— Get line from gz-file pointer and strip HTML tagsgzinflate?— Inflate a deflated stringgzopen?— Open gz-filegzpassthru?— Output all remaining data on a gz-file pointergzputs?— 別名 gzwritegzread?— Binary-safe gz-file readgzrewind?— Rewind the position of a gz-file pointergzseek?— Seek on a gz-file pointergztell?— Tell gz-file pointer read/write positiongzuncompress?— Uncompress a compressed stringgzwrite?— Binary-safe gz-file writereadgzfile?— Output a gz-filezlib_decode?— Uncompress any raw/gzip/zlib encoded datazlib_encode?— Compress data with the specified encodingzlib_get_coding_type?— Returns the coding type used for output compression相關文章：
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