bzdecompress

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

bzdecompress — Decompresses bzip2 encoded data

Опис

function bzdecompress(string $data, bool $use_less_memory = false): string|int|false

bzdecompress() decompresses the given string containing bzip2 encoded data.

Параметри

data: The string to decompress.
use_less_memory: If true, an alternative decompression algorithm will be used which uses less memory (the maximum memory requirement drops to around 2300K) but works at roughly half the speed. See the » bzip2 documentation for more information about this feature.

Значення, що повертаються

The decompressed string, or false or an error number if an error occurred.

Журнал змін

Версія	Опис
8.0.0	The type of `use_less_memory` has been changed from int to bool. Previously, the default value was `0`.

Приклади

Приклад #1 Decompressing a String

<?php
$start_str = "This is not an honest face?";
$bzstr = bzcompress($start_str);

echo "Compressed String: ";
echo $bzstr;
echo "\n<br />\n";

$str = bzdecompress($bzstr);
echo "Decompressed String: ";
echo $str;
echo "\n<br />\n";
?>

Прогляньте також

bzcompress() - Compress a string into bzip2 encoded data

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User Contributed Notes 1 note

down

balint * atres / ath / cx ¶

20 years ago

I spent a while to sort out some integer results of the bzdecompress, so maybe it'll be useful for somebody else also...
(Constants from the sources.)

#define BZ_OK                0
#define BZ_RUN_OK            1
#define BZ_FLUSH_OK          2
#define BZ_FINISH_OK         3
#define BZ_STREAM_END        4
#define BZ_SEQUENCE_ERROR    (-1)
#define BZ_PARAM_ERROR       (-2)
#define BZ_MEM_ERROR         (-3)
#define BZ_DATA_ERROR        (-4)
#define BZ_DATA_ERROR_MAGIC  (-5)
#define BZ_IO_ERROR          (-6)
#define BZ_UNEXPECTED_EOF    (-7)
#define BZ_OUTBUFF_FULL      (-8)
#define BZ_CONFIG_ERROR      (-9)

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