Php/docs/function.inflate-init

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inflate_init

(PHP 7)

inflate_initInitialize an incremental inflate context


说明

inflate_init ( int $encoding [, array $options = [] ] ) : InflateContext|false

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_FIXED or ZLIB_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.


参见