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run code in 200+ php & hhvm versions
Bugs & Features
<?php define('FD', fopen('/dev/null','rw')); stream_filter_append(FD, "php_user_filter");
Output for 4.4.3 - 4.4.9, 5.1.5 - 7.1.7
Warning: stream_filter_append(): unable to locate filter "php_user_filter" in /in/gaZ3t on line 3
Output for 4.3.2 - 4.4.2, 5.0.0 - 5.1.4
Warning: stream_filter_append(): unable to create or locate filter "php_user_filter" in /in/gaZ3t on line 3
Output for 4.3.0 - 4.3.1
Warning: stream_filter_append() [http://www.php.net/function.stream-filter-append]: unable to create or locate filter "php_user_filter" in /in/gaZ3t on line 3