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<?php $i=0;; while($i < 60000) { $i++; $data[md5($i)] = true; } $time = microtime(true); echo "Starting array_key_exists\n"; array_key_exists('notexistingkey', $data); $time = microtime(true) - $time; echo "Starting isset\n"; isset($data['notexistingkey']); $time = microtime(true) - $time;

preferences:
33.31 ms | 402 KiB | 5 Q