3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $f = get_defined_functions(); $funcs = $f['internal']; print_r(array_slice($funcs, 0, 10));
Output for 5.2.15 - 5.6.28, 7.0.0 - 7.1.0
Array ( [0] => zend_version [1] => func_num_args [2] => func_get_arg [3] => func_get_args [4] => strlen [5] => strcmp [6] => strncmp [7] => strcasecmp [8] => strncasecmp [9] => each )
Output for hhvm-3.12.0
Array ( [0] => imap_delete [1] => hh\thread_memory_stats [2] => imap_renamemailbox [3] => hphp_memory_start_interval [4] => mysqli_free_result [5] => is_infinite [6] => hh\objprof_get_data [7] => class_alias [8] => image_type_to_mime_type [9] => gmp_nextprime )
Output for hhvm-3.10.0

Process exited with code 153.