3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = new SplFixedArray(2); $foo[0] = 'bar1'; $foo[1] = 'bar2'; var_dump(isset($foo[0]) ? $foo[0] : null); var_dump(isset($foo[1]) ? $foo[1] : null); var_dump(isset($foo[2]) ? $foo[2] : null);
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 - 7.3.23, 7.4.0 - 7.4.11, 8.0.0alpha1 - rc2
string(4) "bar1" string(4) "bar2" NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'SplFixedArray' not found in /in/s79uA on line 3
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: splfixedarray in /in/s79uA on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: splfixedarray in /in/s79uA on line 3