Online PHP editor | refs for vTjLB

<?php function prepareArray($str) { $onlyLowerLetters = preg_replace('/[^a-z]/', '', strtolower($str)); $stringArray = str_split(str_replace(' ', '', $onlyLowerLetters)); $uniqueArray = array_unique($stringArray); $countsArray = []; foreach ($uniqueArray as $letter) { $countsArray[$letter] = substr_count($onlyLowerLetters, $letter); } unset($letter); foreach ($countsArray as $k => $v) { if ($v === 1) unset($countsArray[$k]); } arsort($countsArray); // reset($countsArray); return $countsArray; } function getIntersect($a1, $a2) { $ar = array_intersect_assoc($a1, $a2); $intersect = []; foreach ($ar as $k => $v) { $intersect[$k] = $v; } return $intersect; } function compareArrays($a1, $a2) { // var_export($a1); // var_export($a2); $resultArray = []; foreach ($a1 as $k => $v) { $resultArray[$k][0] = $v; if (isset($a2[$k]) && $a1[$k] > $a2[$k]) { $resultArray[$k][0] = $v; } } foreach ($a2 as $k => $v) { $resultArray[$k][1] = $v; if (isset($a1[$k]) && $a1[$k] < $a2[$k]) { $resultArray[$k][1] = $v; } } return $resultArray; } function mix($s1, $s2) { $s1Prepared = prepareArray($s1); $s2Prepared = prepareArray($s2); // var_export($s1Prepared); // echo "\n"; // var_export($s2Prepared); // echo "\n"; $intersectArray = getIntersect($s1Prepared, $s2Prepared); // var_export($intersectArray); // echo "\n"; $diffArray = compareArrays(array_diff_key($s1Prepared, $intersectArray), array_diff_key($s2Prepared, $intersectArray)); // var_export($diffArray); // echo "\n"; foreach ($intersectArray as $letter=>$number) { $resultArray[$letter][2] = $number; } $resultArray = $diffArray + $resultArray; var_export($resultArray); echo "\n"; $str = []; foreach ($resultArray as $letter=>$allNumbers) { if ( (isset($allNumbers[0], $allNumbers[1]) && ($allNumbers[0] > $allNumbers[1]) ) || ( isset($allNumbers[0]) && !isset($allNumbers[1]) ) ) { $str[$allNumbers[0]]['letter'] = $letter; $str[$allNumbers[0]]['string'] = '1'; //$str[] = '1:' . str_repeat($letter, $allNumbers[0]); } if ( (isset($allNumbers[0], $allNumbers[1]) && ($allNumbers[0] < $allNumbers[1]) ) || ( isset($allNumbers[1]) && !isset($allNumbers[0]) ) ) { $str[$allNumbers[1]]['letter'] = $letter; $str[$allNumbers[1]]['string'] = '2'; // $str[] = '2:' . str_repeat($letter, $allNumbers[1]); } if (isset($allNumbers[2])) { $str[$allNumbers[2]]['letter'] = $letter; $str[$allNumbers[2]]['string'] = '='; // $str[] = '=:' . str_repeat($letter, $allNumbers[2]); } } var_export($str); $res = ''; foreach ($str as $num => $data) { $res .= '/' . $data['string'] . ':' . str_repeat($data['letter'], $num); } return $res; } echo mix("looping is fun but dangerous", "less dangerous than coding");