gzopen()

(PHP 4, PHP 5, PHP 7)

Open gz-file

说明

Opens a gzip(.gz)file for reading or writing.

gzopen() can be used to read a file which is not in gzip format; in this case gzread() will directly read from the file without decompression.

参数

The file name.

As in fopen()(rborwb)but can also include a compression level(wb9)or a strategy:ffor filtered data as inwb6f,hforHuffman only compressionas inwb1h.(See the description ofdeflateInit2inzlib.hfor more information about the strategy parameter.)

You can set this optional parameter to1, if you want to search for the file in the include_path too.

返回值

Returns a file pointer to the file opened, after that, everything you read from this file descriptor will be transparently decompressed and what you write gets compressed.

If the open fails, the function returns FALSE.

范例

gzopen() Example

参见

• gzclose()Close an open gz-file pointer

gzopen("php://output","wb") doesn't work on a web server, nor does fopen("compress.zlib://php://output","wb").
Here is a snippet to gzip a file and output it on the fly, without using a temporary file, without reading the file into memory, and without reading the file more than once:

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