deflate_add

(PHP 7, PHP 8)

deflate_addIncrementally deflate data

说明

deflate_add ( DeflateContext $context , string $data , int $flush_mode = ZLIB_SYNC_FLUSH ) : string|false

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.

更新日志

版本 说明
8.0.0 context expects a DeflateContext instance now; previously, a resource was expected.

参见