3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '2 + 2 = ' . (2 + 2 === 4 ? 4 : (2 + 2 === 5 ? 5 : 'dunno') : 'dunno'); // should output "4", right? RIGHT?
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Parse error: syntax error, unexpected ':' in /in/aEND5 on line 2
Process exited with code 255.
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181.46 ms | 1395 KiB | 66 Q