(PHP 4, PHP 5, PHP 7)
readgzfile — Output a gz-file
$filename
[, int $use_include_path = 0
] ) : intReads 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.
filenameThe file name. This file will be opened from the filesystem and its contents written to standard output.
use_include_pathYou can set this optional parameter to 1, if you want to search for the file in the include_path too.
Returns the number of (uncompressed) bytes read from the file on success,
或者在失败时返回 FALSE
失败时抛出E_WARNING警告。