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run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = null; var_dump($foo ?? 'bar', $foo ?: 'bar'); $foo = false; var_dump($foo ?? 'bar', $foo ?: 'bar', $foo ?? 'bar' ?: 'baz');
based on Gsm5J
Output for 7.0.0 - 7.2.0
string(3) "bar" string(3) "bar" bool(false) string(3) "bar" string(3) "baz"
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/mNtNY on line 4
Process exited with code 255.