PHP Manual
Zlib 函数
Incrementally deflate data

deflate_add

(PHP 7)

deflate_add — Incrementally deflate data

说明

deflate_add ( resource $context , string $data [, int $flush_mode = ZLIB_SYNC_FLUSH ] ) : string

Incrementally deflates data in the specified context.

参数

context: A context created with deflate_init().
data: A chunk of data to compress.
flush_mode: One of ZLIB_BLOCK, ZLIB_NO_FLUSH, ZLIB_PARTIAL_FLUSH, ZLIB_SYNC_FLUSH (default), ZLIB_FULL_FLUSH, ZLIB_FINISH. Normally you will want to set ZLIB_NO_FLUSH to maximize compression, and ZLIB_FINISH to terminate with the last chunk of data. See the » zlib manual for a detailed description of these constants.

返回值

Returns a chunk of compressed data, 或者在失败时返回 FALSE.

错误／异常

If invalid arguments are given, an error of level E_WARNING is generated.

参见

deflate_init() - Initialize an incremental deflate context

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