3v4l.org

run code in 300+ PHP versions simultaneously
<?php $num = 23; $base = 2; $stack = new SplStack(); while( $num > 0){ $stack->push($num % $base); $num = (int) ($num/$base); // no integer division } while( $stack->valid() ){ // any more nodes? echo $stack->pop(); $stack->next(); }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'SplStack' not found in /in/3UpJq on line 4
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: splstack in /in/3UpJq on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: splstack in /in/3UpJq on line 4
preferences:
238.58 ms | 401 KiB | 357 Q