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bzcompress
Podręcznik PHP
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bzcompress

(PHP 4 >= 4.3.3, PHP 5)

bzcompress -- Compress a string into bzip2 encoded data

Opis

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

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

Parametry

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.

Zwracane wartości

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

Przykłady

Przykład 1. Compressing data

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

Patrz także

bzdecompress()

PoprzedniSpis treściNastępny
bzclosePoczątek rozdziału