3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = []; $foo[] = [ &$foo ]; array_search( $foo, $foo );
Output for 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 - 7.3.29, 7.4.0 - 7.4.22, 8.0.0 - 8.0.8
Fatal error: Nesting level too deep - recursive dependency? in /in/3XMq5 on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/3XMq5 on line 2
Process exited with code 255.
Output for 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/3XMq5 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/3XMq5 on line 2
Process exited with code 255.

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