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 PHP manuál : function.bzcompress.html

bzcompress
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bzcompress

(PHP 4 >= 4.3.3, PHP 5)

bzcompress -- Compress a string into bzip2 encoded data

Description

string 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.

Examples

Example 1. Compressing data

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

See Also

bzdecompress()

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