php压缩函数(gzcompress gzuncompress)压缩字符串

//字符串压缩举例
$string =
“http://bbs.it-home.org is php technical website.This website is personal website.php8848.com has many php and mysql or other IT knowledage articles,so welcome to php8848.com!please enjoy it! it’s our honor if php8848 can help you !”;
$compressed = gzcompress($string);
echo “Original size: “. strlen($string).”n”;
/* prints
Original size: 800
*/
echo “Compressed size: “. strlen($compressed).”n”;
/* prints
Compressed size: 418
*/
// getting it back
$original = gzuncompress($compressed);这种操作的压缩率能达到 50% 左右。

另外，函数 gzencode() 和 gzdecode() 能达到类似结果，通过使用不同的压缩算法。