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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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bzcompress

(PHP 4 >= 4.3.3, PHP 5)

bzcompress -- Compress a string into bzip2 encoded data

Description

mixed bzcompress ( string source [, int blocksize [, int workfactor]] )

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

Parameters

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 30 being the default value.

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

Return Values

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

Examples

Example 1. Compressing data

<?php
$str = "sample data";
$bzstr = bzcompress($str, 9);
echo $bzstr;
?>

See Also

bzdecompress()

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PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.