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<?php $replace = array( '/</', '/>/', '/*/', '/!/', '/;/', '/#/', '/(/', '/)/', '/@/', '/|/', '/[/', '/]/', '/}/', '/{/', '/$/' ); $e = $array_fill(0, count($replace), ''); print preg_replace( $replace, $e, 'ls; ${}[]@()#!*<asdlad>' );

preferences:
46.62 ms | 402 KiB | 5 Q