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<?php $a = array ('test' => 1, 'hello' => NULL, 'pie' => array('a' => 'apple')); print isset($a['test']); // TRUE print isset($a['foo']); // FALSE print isset($a['hello']); // FALSE
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/X580G on line 7
Process exited with code 255.

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239.9 ms | 401 KiB | 328 Q