readgzfile

(PHP 4, PHP 5, PHP 7)

readgzfile — Output a gz-file

说明

int readgzfile ( string $filename [, int $use_include_path = 0 ] )

Reads a file, decompresses it and writes it to standard output.

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

参数

filename: The file name. This file will be opened from the filesystem and its contents written to standard output.
use_include_path: You can set this optional parameter to 1, if you want to search for the file in the include_path too.

返回值

Returns the number of (uncompressed) bytes read from the file. If an error occurs, FALSE is returned and unless the function was called as @readgzfile, an error message is printed.

参见

gzpassthru() - Output all remaining data on a gz-file pointer
gzfile() - Read entire gz-file into an array
gzopen() - Open gz-file

User Contributed Notes

glennh at webadept dot net 02-Oct-2003 10:52


This is a rather simple example of usage for this function, but it does work, and it solved a problem I was using with old browsers accessing gzipped files. 



<?PHP 

 

// first we need to stop the server from sending any headers at all.  

ob_start(); 

 

readgzfile("test.html.gz"); // read the file and output directly to

the browser

                                      // non compressed data from the

file

 

ob_end_flush(); // let the headers go//  

 

?> 



There is no need for any html formating if the source file is an HTML formated page, such as the ones I'm using are. Checking the browser version, sends either the gzip file directly, or sends the browser to a page like this, which does the work for it. Well done simple function. 



My server is running PHP 4.2.2 on Linux Redhat version 9 and

Apache 2.0.40