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<?php function arrayOfDivisors($x) { $divisors = array (); for($i = 1; $i < $x; $i ++) { if ($x % $i == 0) { if($i>$x/$i){break;} } } return [$i,$x/$i]; } var_dump (arrayOfDivisors ( 20 ));
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(2) { [0]=> int(5) [1]=> int(4) }

preferences:
241.75 ms | 403 KiB | 287 Q