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run code in 300+ PHP versions simultaneously
<?php $filename ="aaa\n.x\ny"; var_dump(basename($filename)); echo 7; preg_match('#\.(.+)$#', $filename, $matches); var_dump($matches);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
string(8) "aaa .x y" 7array(0) { }

preferences:
179.59 ms | 404 KiB | 182 Q