One-liners to gzip and ungzip a file:
copy('file.txt', 'compress.zlib://' . 'file.txt.gz');
copy('compress.zlib://' . 'file.txt.gz', 'file.txt');
zlib://
bzip2://
zip://
zlib:// -- bzip2:// -- zip:// — Flujos de compresión
Descripción
zlib: PHP 4.0.4 - PHP 4.2.3 (sólo en sistemas con fopencookie)
compress.zlib:// and compress.bzip2:// PHP 4.3.0 y superior
zlib: funciona como gzopen(), solo que usando el flujo, se puede utilizar con fread() al igual que con otras funciones del sistema de ficheros. Esto quedó obsoleto en PHP 4.3.0 debido a la ambigüedad que surge con los nombres de fichero que contienen el caracter ':'; en su lugar, debe usarse compress.zlib://.
compress.zlib:// y compress.bzip2:// son equivalentes a gzopen() y a bzopen() respectivamente, y funcionan incluso en sistemas que no tienen soporte para fopencookie.
La extensión ZIP registra la envoltura zip:.
Uso
- compress.zlib://file.gz
- compress.bzip2://file.bz2
- zip://archive.zip#dir/file.txt
add a note
User Contributed Notes 6 notes
lewa::cpan.org ¶
7 years ago
feodor at ctm dot ru ¶
8 years ago
Prior to PHP 5.6 i used code like
<?php
file_get_contents("compress.zlib://php://input");
?>
to read gz-compressed or plain input file. Not it doesn't work.
Simple workaround :
<?php
//file_get_contents("compress.zlib://php://input");
class gzip_header_filter8 extends php_user_filter {
private $filtered = 0;
public function filter($in, $out, &$consumed, $closing) {
while ($bucket = stream_bucket_make_writeable($in)) {
if($this->filtered == 0) {
$header_len = 8;
$header = substr($bucket->data, 0, 8);
$flags = ord($header[1]);
if($flags & 0x08) {
// a filename is present
$header_len = strpos($bucket->data, "\0", 8) + 1;
}
$bucket->data = substr($bucket->data, $header_len);
$this->filtered = $header_len;
}
$consumed += $bucket->datalen;
stream_bucket_append($out, $bucket);
}
return PSFS_PASS_ON;
}
}
stream_filter_register('gzip_header_filter8', 'gzip_header_filter8');
$READ_LEN = 64*1024;
$MAX_BUF_LEN = $READ_LEN*1024;
$mode_plain=true;
$src=fopen("php://input","rb"); //test if OK!!!!
$magic_number=fread($src,2);
$input="";
if(strlen($magic_number)==2)
if(
(ord($magic_number[0])==31)
&& (ord($magic_number[1])==139)
)
{
$mode_plain=false;
stream_filter_append($src, "gzip_header_filter8", STREAM_FILTER_READ);
stream_filter_append($src, "zlib.inflate", STREAM_FILTER_READ);
}
else
{
$input=$magic_number;
}
/* read starts here*/
$k = 0;
while (!feof($src) && $k <= $MAX_BUF_LEN) {
$inp = fread($src,$READ_LEN);
$k += strlen($inp);
$input.=$inp;
}
echo $input;
fclose($src);
?>
alvaro at demogracia dot com ¶
13 years ago
Example on how to read an entry from a ZIP archive (file "bar.txt" inside "./foo.zip"):
<?php
$fp = fopen('zip://./foo.zip#bar.txt', 'r');
if( $fp ){
while( !feof($fp) ){
echo fread($fp, 8192);
}
fclose($fp);
}
?>
Also, apparently, the "zip:" wrapper does not allow writing as of PHP/5.3.6. You can read http://php.net/ziparchive-getstream for further reference since the underlying code is probably the same.
joshualross at gmail dot com ¶
17 years ago
I had a difficult time finding how to use compress.zlib with an http resource so I thought I would post what I found
<?php
$file = 'compress.zlib://http://www.example.com/myarchive.gz';
$fr = fopen($file, 'rb');
?>
Per the bugreport I found here (http://bugs.php.net/bug.php?id=29045)
arava dot box at gmail dot com ¶
4 years ago
This is the solution how to read stream from zip:
$fp = fopen('zip://foo.zip#bar.txt', 'r');
if( $fp ){
while( !feof($fp) ){
echo fread($fp, 8192);
}
fclose($fp);
}
eragonjml at googlemail dot com ¶
11 years ago
@alvaro at demogracia dot com
well in fact that is wrong!
right code is:
<?php
$fp = fopen('compress.zip://./foo.zip#bar.txt', 'r');
if( $fp ){
while( !feof($fp) ){
echo fread($fp, 8192);
}
fclose($fp);
}
?>
as you might see you just have to add a "compress."
maybe when you posted this note is was right (2 years ago) but today its wrong... :/
sry for my english i am german :)
