bzclosebzcompress
(PHP 4 >= 4.3.3, PHP 5, PECL bz2:1.0)
bzcompress — Compress a string into bzip2 encoded data
说明
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 30 being 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";
$bzstr = bzcompress($str, 9);
echo $bzstr;
?>
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