bzcompress
Description
The bzcompress of bzip2 for PHP compresses a string into bzip2 encoded data.
Syntax
bzcompress(
string $data,
int $block_size = 4,
int $work_factor = 0
): string|intParameters
data
The string to compress.
block_size
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.
work_factor
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 work_factor, the generated output is the same.
Return
Returns the compressed string on success, or an error number if an error occurred.
Examples
1 · data
<? $data = "data"; $return = bzcompress($data); echo $return; ?>
BZh41AY&SY��r �$ 0� z�qw$S� �i�
2 · block_size · 1
<? $data = "data"; $block_size = 1; $return = bzcompress($data, $block_size); echo $return; ?>
BZh11AY&SY��r �$ 0� z�qw$S� �i�
3 · block_size · 9
<? $data = "data"; $block_size = 9; $return = bzcompress($data, $block_size); echo $return; ?>
BZh91AY&SY��r �$ 0� z�qw$S� �i�
4 · work_factor · 0
<? $data = "data"; $block_size = 5; $work_factor = 0; $return = bzcompress($data, $block_size, $work_factor); echo $return; ?>
BZh51AY&SY��r �$ 0� z�qw$S� �i�
5 · work_factor · 250
<? $data = "data"; $block_size = 5; $work_factor = 250; $return = bzcompress($data, $block_size, $work_factor); echo $return; ?>
BZh51AY&SY��r �$ 0� z�qw$S� �i�
