PHP ?GZ压缩与解压

 1 /*将字符串添加至GZ文件*/ 2 function gz_str($str,$gz_name){ 3 ????$fp = gzopen ($gz_name, ‘w9‘); 4 ????gzwrite ($fp, $str); 5 ????gzclose($fp); ????6 } 7 /*将文件添加至GZ文件*/ 8 function gz_file($file,$gz_name){ 9 ????$fp = gzopen ($gz_name, ‘w9‘);10 ????gzwrite ($fp, file_get_contents($file));11 ????gzclose($fp); ???12 }13 /*读取GZ文件*/14 function read_gz($gz_file){15 ????$buffer_size = 4096; // read 4kb at a time16 ????$file = gzopen($gz_file, ‘rb‘);17 ????$str=‘‘;18 ????while(!gzeof($file)) {19 ????????$str.=gzread($file, $buffer_size);20 ????}21 ????gzclose($file);22 ????return $str;23 }24 /*解压GZ文件*/25 function unzip_gz($gz_file){26 ????$buffer_size = 4096; // read 4kb at a time27 ????$out_file_name = str_replace(‘.gz‘, ‘‘, $gz_file);28 ????$file = gzopen($gz_file, ‘rb‘);29 ????$out_file = fopen($out_file_name, ‘wb‘);30 ????$str=‘‘;31 ????while(!gzeof($file)) {32 ????????fwrite($out_file, gzread($file, $buffer_size));33 ????}34 ????fclose($out_file);35 ????gzclose($file);36 }