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run code in 200+ php & hhvm versions
<?php /* * Complete the 'mergeArrays' function below. * * The function is expected to return an INTEGER_ARRAY. * The function accepts following parameters: * 1. INTEGER_ARRAY a * 2. INTEGER_ARRAY b */ function mergeArrays($a, $b) { $mergedArray = array_merge($a, $b); $sortedMergedArray = sorter($mergedArray); // for($i=0; $i<count($sortedMergedArray);$i++){ // echo $sortedMergedArray[$i] . "\n"; // } foreach($sortedMergedArray as $value) { echo $value . "\n"; } } function sorter($array) { for($i=0; $i<count($array);$i++){ for($j=$i+1; $j<count($array);$j++){ if($array[$i] > $array[$j]) { $tmp = $array[$i]; $array[$i] = $array[$j]; $array[$j] = $tmp; } } } return $array; } $result = mergeArrays([1,2], [3,4]); var_dump($result);
based on eRMRL
Output for 7.1.25 - 7.3.5
1 2 3 4 NULL