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gzinflate

(PHP 4 >= 4.0.4, PHP 5)

gzinflateInflate a deflated string

Beschreibung

string gzinflate ( string $data [, int $length ] )

This function inflate a deflated string.

Parameter-Liste

data

The data compressed by gzdeflate().

length

The maximum length of data to decode.

Rückgabewerte

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.

Beispiele

Beispiel #1 gzinflate() example

<?php
$compressed   
gzdeflate('Compress me'9);
$uncompressed gzinflate($compressed);
echo 
$uncompressed;
?>

Siehe auch


6 BenutzerBeiträge:
- Beiträge aktualisieren...
Steven Lustig
5.11.2010 18:44
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));
?>
vitall at ua dot fm
10.09.2009 2:10
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
13.06.2008 7:22
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
24.08.2007 19:57
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
2.11.2006 5:12
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
8.07.2003 14:49
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)); ?>



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