inflate_init

(PHP 7)

inflate_init — Initialize an incremental inflate context

说明

inflate_init ( int $encoding [, array $options = array() ] ) : resource

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.

参见

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