PHP 7 callback references
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | <?php class Log { function doLog($msg) { echo $msg . "\n"; } } $log = new Log(); $cb = array(&$log, 'doLog'); call_user_func($cb, 'hi'); $cb2 = &$cb; call_user_func($cb2, 'hi2'); $cb3 = &$cb2; call_user_func($cb3, 'hi3'); $cb4 = &$cb3; call_user_func($cb4, 'hi4'); ?> |
hi Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/G2i2D on line 15 Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/G2i2D on line 18 Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/G2i2D on line 21 see http://3v4l.org/G2i2D#vphp7@20150101
