Bzip2 函数
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bzcompress

(PHP 4 >= 4.0.4, PHP 5)

bzcompressCompress a string into bzip2 encoded data

说明

mixed bzcompress ( string $source [, int $blocksize=4 [, int $workfactor=0 ]] )

bzcompress() compresses the given string and returns it as bzip2 encoded data.

参数

source

The string to compress.

blocksize

Specifies the blocksize used during compression and should be a number from 1 to 9 with 9 giving the best compression, but using more resources to do so. blocksize defaults to 4.

workfactor

Controls how the compression phase behaves when presented with worst case, highly repetitive, input data. The value can be between 0 and 250 with 0 being a special case and the default value.

Regardless of the workfactor , the generated output is the same.

返回值

The compressed string or number of error in case of error.

范例

Example #1 Compressing data

<?php
$str 
"sample data";
$bzstr bzcompress($str9);
echo 
$bzstr;
?>

参见


Bzip2 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程