PHP 8.3.0 RC 6 available for testing

zlib://

bzip2://

zip://

zlib:// -- bzip2:// -- zip://压缩流

说明

compress.zlib:// and compress.bzip2://

zlib: 的功能类似 gzopen(),但是 其数据流还能被 fread() 和其他文件系统函数使用。 不建议使用,因为会和其他带“:”字符的文件名混淆; 请使用 compress.zlib:// 替代。

compress.zlib://compress.bzip2://gzopen()bzopen() 是相等的。并且可以在不支持 fopencookie 的系统中使用。

ZIP 扩展 注册了 zip: 封装器。 自 PHP 7.2.0 和 libzip 1.2.0+ 起,加密归档开始支持密码,允许数据流中使用密码。 字节流上下文(stream contexts)中使用 'password' 选项设置密码。

可选项

  • compress.zlib://file.gz
  • compress.bzip2://file.bz2
  • zip://archive.zip#dir/file.txt

用法

封装协议摘要
属性 支持
受限于 allow_url_fopen No
允许读取 Yes
允许写入 Yes(除了 zip://
允许附加 Yes(除了 zip://
允许同时读写 No
支持 stat() No,请使用普通的 file:// 封装器统计压缩文件。
支持 unlink() No,请使用 file:// 封装器删除压缩文件。
支持 rename() No
支持 mkdir() No
支持 rmdir() No

add a note

User Contributed Notes 6 notes

up
18
lewa::cpan.org
6 years ago
One-liners to gzip and ungzip a file:

copy('file.txt', 'compress.zlib://' . 'file.txt.gz');

copy('compress.zlib://' . 'file.txt.gz', 'file.txt');
up
4
feodor at ctm dot ru
7 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);
?>
up
11
alvaro at demogracia dot com
12 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.
up
2
joshualross at gmail dot com
16 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)
up
0
arava dot box at gmail dot com
3 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);
}
up
-19
eragonjml at googlemail dot com
10 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 :)
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