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run code in 300+ PHP versions simultaneously
<?php $array = array('a' => false, 'b' => null, 'c' => '', 'd' => 'd'); function asBool($value) { return $value ? 'true' : 'false' ; } foreach ($array as $k => $v) { printf( '%s => %s isset = %s ake = %s' . PHP_EOL, $k, $v, asBool(isset($array[ $k ])), asBool(array_key_exists($k, $array)) ); }
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
a => isset = true ake = true b => isset = false ake = true c => isset = true ake = true d => d isset = true ake = true
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/YIkcr on line 10 a => isset = true ake = truePHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/YIkcr on line 10 b => isset = false ake = truePHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/YIkcr on line 10 c => isset = true ake = truePHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/YIkcr on line 10 d => d isset = true ake = truePHP_EOL
preferences:
262.35 ms | 402 KiB | 353 Q