delay

index.php

@@ -23,38 +23,38 @@ if (((int)$_GET['end'] - (int)$_GET['first']) <= 0) {
     exit('The first parameter must be less than the second!');
 }
 
-$current = (int)$_GET['first'];
+$current = (int)$_GET['end'];
 $num = $current;
 $ticketsHappy = 0;
-do {
-    /*$sum1 = 0;
-    $sum2 = 0;*/
-    $num = $current;
-    $numbers []= intdiv($current, 1000);
-    $numbers []= $current%1000;
-    $sum = [];
-    foreach($numbers as $key => $num) {
-        $sumCurrent = 0;
-        while ($num > 0) {
-            $sumCurrent += $num % 10;
-            $num = intdiv($num,10);
-        }
-        if ($sumCurrent > 9) {
-            $sumCurrent = ($sumCurrent % 10) + intdiv($sumCurrent,10);
+$currentLeft = intdiv($current, 1000);
+$currentRight = $current % 1000;
+$sumNumber = static function ($num) {
+    $sumCurrent = 0;
+    while ($num > 0) {
+        $sumCurrent += $num % 10;
+        $num = intdiv($num, 10);
+    }
+    if ($sumCurrent > 9) {
+        $sumCurrent = ($sumCurrent % 10) + intdiv($sumCurrent, 10);
+    }
+    return $sumCurrent;
+};
+while ($currentLeft >= 0) {
+    $sumCurrentLeft = $sumNumber($currentLeft);
+    while ($currentRight >= 0) {
+        $sumCurrentRight = $sumNumber($currentRight);
+        if ($sumCurrentLeft === $sumCurrentRight) {
+            //echo($current.'<br/>');
+            ++$ticketsHappy;
         }
-        $sum []= $sumCurrent;
+        --$currentRight;
     }
-    if ($sum[0] === $sum[1]) {
-       //echo($current.'<br/>');
-        ++$ticketsHappy;
+    if ($currentRight < 0 && $currentLeft > 0) {
+        $currentRight = 999;
     }
-    unset($numbers,$sum,$sumCurrent);
-    //$happy($current);
-    $stopLoop = ($_GET['end'] - $current);
-    ++$current;
-} while ($stopLoop);
-
+    --$currentLeft;
+}
 
 echo $ticketsHappy;
 echo '<br /><br />';
-echo 'Время выполнения скрипта: ' . round(microtime(true) - $start, 4) . ' сек.';
\ No newline at end of file
+echo 'Script execution time: ' . round(microtime(true) - $start, 4) . ' s.';
\ No newline at end of file