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:// — Streams de compactação
Descrição
compress.zlib:// e compress.bzip2://
zlib: funciona como gzopen(), exceto que o stream pode ser usado com fread() e outras funções do sistema de arquivos. Isso foi descontinuado devido a ambiguidades com nomes de arquivos contendo caracteres ':'; use compress.zlib:// em vez disso.
compress.zlib:// e compress.bzip2:// são equivalentes para gzopen() e bzopen() respectivamente, e funcionam mesmo em sistemas que não suportam fopencookie.
A extensão ZIP registra o wrapper zip:. a partir do
PHP 7.2.0 e libzip 1.2.0+, foi adicionado suporte para as senhas para arquivos criptografados, permitindo
que as senhas sejam fornecidas por stream contexts. As senhas podem ser definidas usando 'password',
uma opção de contexto de streams.
Uso
- compress.zlib://file.gz
- compress.bzip2://file.bz2
- zip://archive.zip#dir/file.txt
Veja Também
add a note
User Contributed Notes 6 notes
lewa::cpan.org ¶
7 years ago
feodor at ctm dot ru ¶
9 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 ¶
5 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 :)
