3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = $bar['baz']['dawg'][0]->wham ?? 'foo'; echo isset($bar['baz']['dawg'][0]->wham) ? 'yeah' : 'nope' . PHP_EOL; echo $foo;
Output for 7.0.0 - 7.0.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
nope foo
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/4jopB on line 3
Process exited with code 255.

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