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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;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 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 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0 - 7.3.1
Starting array_key_exists Starting isset
preferences:
164.79 ms | 404 KiB | 248 Q