PHP - Manual: inflate_init
2024-12-22
inflate_init
(PHP 7, PHP 8)
inflate_init — Initialize an incremental inflate context
说明
Initialize an incremental inflate context with the specified
encoding.
参数
-
encoding -
One of the
ZLIB_ENCODING_*constants. -
options -
An associative array which may contain the following elements:
- level
-
The compression level in range -1..9; defaults to -1.
- memory
-
The compression memory level in range 1..9; defaults to 8.
- window
-
The zlib window size (logarithmic) in range 8..15; defaults to 15.
- strategy
-
One of
ZLIB_FILTERED,ZLIB_HUFFMAN_ONLY,ZLIB_RLE,ZLIB_FIXEDorZLIB_DEFAULT_STRATEGY(the default). - dictionary
-
A string or an array of strings of the preset dictionary (default: no preset dictionary).
返回值
Returns an inflate context resource (zlib.inflate) on
success, 或者在失败时返回 false.
错误／异常
If an invalid encoding or option is passed to options,
or the context couldn't be created, an error of level
E_WARNING is generated.
更新日志
| 版本 | 说明 |
|---|---|
| 8.0.0 | On success, this function returns an InflateContext instance now; previously, a resource was returned. |
注释
警告
Unlike gzinflate(), incremental inflate contexts do not constrain the length of the decoded data, so provide no automatic protection against Zip bombs.
参见
- inflate_add() - Incrementally inflate encoded data
- deflate_init() - Initialize an incremental deflate context
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官方地址：https://www.php.net/manual/en/function.inflate-init.php
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