大多數檔案系統函數使用gzip來壓縮文件,本模組可以幫助透明讀取gzip壓縮檔案。
在PHP中Zlib支援預設並沒有開啟。需要安裝設定 PHP的時候使用 --with-zlib[=DIR]。
下面這個範例開啟了一個臨時檔案來寫入測試字串,然後兩次列印檔案內容。
Example #1 簡單的Zlib範例
<?php $filename = tempnam('/tmp', 'zlibtest') . '.gz'; echo "<html>\n<head></head>\n<body>\n<pre class="brush:php;toolbar:false">\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 "\n
\n