bcompiler_write_included_filename
<?php
/**
* @return bool
* @param string $in
* @param string $out
* @desc compressing the file with the bzip2-extension
*/
function bzip2 ($in, $out)
{
if (!file_exists ($in) || !is_readable ($in))
return false;
if ((!file_exists ($out) && !is_writeable (dirname ($out)) || (file_exists($out) && !is_writable($out)) ))
return false;
$in_file = fopen ($in, "rb");
$out_file = bzopen ($out, "wb");
while (!feof ($in_file)) {
$buffer = fgets ($in_file, 4096);
bzwrite ($out_file, $buffer, 4096);
}
fclose ($in_file);
bzclose ($out_file);
return true;
}
/**
* @return bool
* @param string $in
* @param string $out
* @desc uncompressing the file with the bzip2-extension
*/
function bunzip2 ($in, $out)
{
if (!file_exists ($in) || !is_readable ($in))
return false;
if ((!file_exists ($out) && !is_writeable (dirname ($out)) || (file_exists($out) && !is_writable($out)) ))
return false;
$in_file = bzopen ($in, "rb");
$out_file = fopen ($out, "wb");
while ($buffer = bzread ($in_file, 4096)) {
fwrite ($out_file, $buffer, 4096);
}
bzclose ($in_file);
fclose ($out_file);
return true;
}
?>
Bzip2 Compression Functions
簡介
The bzip2 functions are used to transparently read and write bzip2 (.bz2) compressed files.
需求
This module uses the functions of the » bzip2 library by Julian Seward. This module requires bzip2/libbzip2 version >= 1.0.x.
安裝
Bzip2 support in PHP is not enabled by default. You will need to use the --with-bz2[=DIR] configuration option when compiling PHP to enable bzip2 support.
執行時期設定
本擴充功能在 php.ini 中未定義任何設定選項。
資源類型
This extension defines one resource type: a file pointer identifying the bz2-file to work on.
預設常數
本擴充功能未定義任何常數。
範例
This example opens a temporary file and writes a test string to it, then prints out the contents of the file.
Example#1 Small bzip2 Example
<?php
$filename = "/tmp/testfile.bz2";
$str = "This is a test string.\n";
// open file for writing
$bz = bzopen($filename, "w");
// write string to file
bzwrite($bz, $str);
// close file
bzclose($bz);
// open file for reading
$bz = bzopen($filename, "r");
// read 10 characters
echo bzread($bz, 10);
// output until end of the file (or the next 1024 char) and close it.
echo bzread($bz);
bzclose($bz);
?>
Table of Contents
- bzclose — Close a bzip2 file
- bzcompress — Compress a string into bzip2 encoded data
- bzdecompress — Decompresses bzip2 encoded data
- bzerrno — Returns a bzip2 error number
- bzerror — Returns the bzip2 error number and error string in an array
- bzerrstr — Returns a bzip2 error string
- bzflush — Force a write of all buffered data
- bzopen — Opens a bzip2 compressed file
- bzread — Binary safe bzip2 file read
- bzwrite — Binary safe bzip2 file write
add a note
User Contributed NotesBzip2
ec10 at gmx dot net
20-May-2004 11:34
20-May-2004 11:34