Added solution in PHP language

solutions/034.md

@@ -59,6 +59,7 @@ To summarize:
 
 The algorithm has a time complexity that grows logarithmically with the number of points. It is efficient for processing a moderate number of points, but as the number of points increases significantly, the sorting step becomes more time-consuming.
 
+#### Python3
 ```python3
 class Solution:
     def maxWidthOfVerticalArea(self, points: List[List[int]]) -> int:
@@ -69,4 +70,28 @@ class Solution:
         return maximum
 ```
 
+#### PHP
+```php
+class Solution {
+
+    /**
+     * @param Integer[][] $points
+     * @return Integer
+     */
+    function maxWidthOfVerticalArea($points) {
+        usort($points, function($a, $b){
+            return $a[0] > $b[0] ? 1 : -1;
+        });
+
+        $max = 0;
+        $n = count($points);
+        for($i = 0; $i < $n - 1; $i++){
+            $max = max($max, $points[$i + 1][0] - $points[$i][0]);
+        }
+
+        return $max;
+    }
+}
+```
+
 ***NB***: If you want to get community points please suggest solutions in other languages as merge requests.