PHPize Online / SQLize Online  /  SQLtest Online

<? $a = 1; $b = 9; $c = 8; $d = 3; $arr = [$a, $b, $c, $d]; $res = ''; for ($i = 2; $i >= 0; $i--) { if (array_search($i, $arr) != '' or array_search($i, $arr) != false) { //echo "res = " . $arr[array_search($i, $arr)] . "\n"; // ok $res .= $arr[array_search($i, $arr)]; $first = $arr[array_search($i, $arr)]; //echo "res = $res\n"; unset($arr[$first]); //echo "new arr = "; //print_r($arr); // } else { // echo "$i not exists" . "\n"; // } echo "first = " . $first . "\n"; } echo "$res\n"; for ($i = 4; $i >= 0; $i--) { if (array_search($i, $arr) != '' or array_search($i, $arr) != false) { $res .= $arr[array_search($i, $arr)]; $second = $arr[array_search($i, $arr)]; unset($arr[$second]); } echo "$res\n"; } $res .= ':'; $res .= max($arr); $res .= min($arr); } //$first = $arr[array_search(2, $arr)]; //echo "search = " . array_search($a, $arr); echo "res = $res"; ?>