3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 'dingo', 'wombat', 'wallaby' ); $it = new ArrayIterator( $array ); iterator_apply( $it, 'addCaps', array($it) );
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: iterator_apply(): Argument #2 ($callback) must be a valid callback, function "addCaps" not found or invalid function name in /in/o6GZS:5 Stack trace: #0 /in/o6GZS(5): iterator_apply(Object(ArrayIterator), 'addCaps', Array) #1 {main} thrown in /in/o6GZS on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: iterator_apply() expects parameter 2 to be a valid callback, function 'addCaps' not found or invalid function name in /in/o6GZS on line 5
Output for 5.2.0 - 5.2.17
Warning: iterator_apply() expects parameter 2 to be function, string given in /in/Qu8cN on line 5
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function iterator_apply() in /in/Qu8cN on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: arrayiterator in /in/Qu8cN on line 3
Process exited with code 255.
Output for 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayiterator in /in/Qu8cN on line 3
Output for 4.3.0
Fatal error: Cannot instantiate non-existent class: arrayiterator in /in/o6GZS on line 3

preferences:
298.61 ms | 401 KiB | 456 Q