gzgetss
You can use this to uncompress a string from Linux command line gzip by stripping the first 10 bytes:
<?php
$inflatedOutput = gzinflate(substr($output, 10, -8));
?>
gzinflate
(PHP 4 >= 4.0.4, PHP 5)
gzinflate — Inflate a deflated string
Description
string gzinflate
( string $data
[, int $length = 0
] )
This function inflate a deflated string.
Return Values
The original uncompressed data or FALSE on error.
The function will return an error if the uncompressed data is more than 32768 times the length of the compressed input data or more than the optional parameter length.
Examples
Example #1 gzinflate() example
<?php
$compressed = gzdeflate('Compress me', 9);
$uncompressed = gzinflate($compressed);
echo $uncompressed;
?>
See Also
- gzdeflate() - Deflate a string
- gzcompress() - Compress a string
- gzuncompress() - Uncompress a compressed string
- gzencode() - Create a gzip compressed string
add a note
User Contributed Notes
gzinflate
Steven Lustig
05-Nov-2010 03:44
vitall at ua dot fm
09-Sep-2009 11:10
The correct function for gzip and chunked data particularly when you get "Content-Encoding: gzip" and "Transfer-Encoding: chunked" headers:
<?php
function decode_gzip($h,$d,$rn="\r\n"){
if (isset($h['Transfer-Encoding'])){
$lrn = strlen($rn);
$str = '';
$ofs=0;
do{
$p = strpos($d,$rn,$ofs);
$len = hexdec(substr($d,$ofs,$p-$ofs));
$str .= substr($d,$p+$lrn,$len);
$ofs = $p+$lrn*2+$len;
}while ($d[$ofs]!=='0');
$d=$str;
}
if (isset($h['Content-Encoding'])) $d = gzinflate(substr($d,10));
return $d;
}
?>
Enjoy!
John
12-Jun-2008 04:22
And when retrieving mod_deflate gzip'ed content and using gzinflate() to decode the data, be sure to strip the first 11 chars from the retrieved content.
<?php $dec = gzinflate(substr($enc,11)); ?>
patatraboum at free dot fr
24-Aug-2007 04:57
Some gz string strip header and return inflated
It actualy processes some first member of the gz
See rfc1952 at http://www.faqs.org/rfcs/rfc1952.html for more details and improvment as gzdecode
<?php
function gzBody($gzData){
if(substr($gzData,0,3)=="\x1f\x8b\x08"){
$i=10;
$flg=ord(substr($gzData,3,1));
if($flg>0){
if($flg&4){
list($xlen)=unpack('v',substr($gzData,$i,2));
$i=$i+2+$xlen;
}
if($flg&8) $i=strpos($gzData,"\0",$i)+1;
if($flg&16) $i=strpos($gzData,"\0",$i)+1;
if($flg&2) $i=$i+2;
}
return gzinflate(substr($gzData,$i,-8));
}
else return false;
}
?>
spikeles_ at hotmail dot com
01-Nov-2006 01:12
This can be used to inflate streams compressed by the Java class java.util.zip.Deflater but you must strip the first 2 bytes off it. ( much like the above comment )
<?php $result = gzinflate(substr($compressedData, 2)); ?>
boris at gamate dot com
07-Jul-2003 11:49
When retrieving mod_gzip'ed content and using gzinflate() to decode the data, be sure to strip the first 10 chars from the retrieved content.
<?php $dec = gzinflate(substr($enc,10)); ?>