PHP 7 callback references
1 2 3 4 5 6 7 8 9 10 11 | <?php function l($m) { echo $m . "\n"; } $cb = 'l'; call_user_func($cb, 'hi'); $cb2 = &$cb; call_user_func($cb2, 'hi2'); ?> |
hi Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/D9PjW on line 10 see http://3v4l.org/D9PjW#vphp7@20150101
