gzuncompress
katzlbtjunk's method is certainly shorter, but it is unusable for anything except small files. It would try to load the whole file into memory, then create an entire compressed copy, and only then write it to disk. The other method given below will not exhaust memory like that.
gzwrite
(PHP 4, PHP 5)
gzwrite — Binary-safe gz-file write
Popis
int gzwrite
( resource $zp
, string $string
[, int $length
] )
gzwrite() writes the contents of string to the given gz-file.
Parametre
- zp
-
The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen().
- string
-
The string to write.
- length
-
The number of uncompressed bytes to write. If supplied, writing will stop after length (uncompressed) bytes have been written or the end of string is reached, whichever comes first.
Note: Note that if the length argument is given, then the magic_quotes_runtime configuration option will be ignored and no slashes will be stripped from string .
Vrátené hodnoty
Returns the number of (uncompressed) bytes written to the given gz-file stream.
Príklady
Example#1 gzwrite() example
<?php
$string = 'Some information to compress';
$gz = gzopen('somefile.gz','w9');
gzwrite($gz, $string);
gzclose($gz);
?>
add a note
User Contributed Notesgzwrite
Anonymous
27-Mar-2008 01:34
27-Mar-2008 01:34
katzlbtjunk at hotmail dot com
21-Feb-2008 11:24
21-Feb-2008 11:24
How about this instead:
$s = file_get_contents('file.tar');
file_put_contents('file.tar.gz',gzencode($s,9));
Kioob
13-Aug-2003 04:30
13-Aug-2003 04:30
This is a short example of use gzwrite function.
<?php
function gzcompressfile($source,$level=false){
$dest=$source.'.gz';
$mode='wb'.$level;
$error=false;
if($fp_out=gzopen($dest,$mode)){
if($fp_in=fopen($source,'rb')){
while(!feof($fp_in))
gzwrite($fp_out,fread($fp_in,1024*512));
fclose($fp_in);
}
else $error=true;
gzclose($fp_out);
}
else $error=true;
if($error) return false;
else return $dest;
}
?>
the function gzcompressfile() compress a file 'data.csv' to 'data.csv.gz'. the function return false if error, and the new file name if it's ok.