3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = isset($result, $result->property, $result->f()); $a = isset($result, $result->property, $result::c); $a = isset($result, $result->property, $result->f()->a);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.6
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/7QinI on line 2
Process exited with code 255.
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193.17 ms | 1395 KiB | 35 Q