bzcompress

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

bzcompress — Compress a string into bzip2 encoded data

Descrierea

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

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

Parametri

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.

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.

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

Valorile întoarse

The compressed string, or an error number if an error occurred.

Exemple

Example #1 Compressing data

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

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