1--TEST-- 2Test function gzwrite() by calling it when file is opened for reading 3--EXTENSIONS-- 4zlib 5--FILE-- 6<?php 7 8$filename = __DIR__."/004.txt.gz"; 9$h = gzopen($filename, 'r'); 10$str = "Here is the string to be written. "; 11$length = 10; 12var_dump(gzwrite( $h, $str ) ); 13var_dump(gzread($h, 10)); 14var_dump(gzwrite( $h, $str, $length ) ); 15gzclose($h); 16 17?> 18--EXPECT-- 19int(0) 20string(10) "When you'r" 21int(0) 22