feat: add php solution to lc problem: No.0349 (doocs#960)

Author: Qiu-IT

solution/0300-0399/0349.Intersection of Two Arrays/README.md

@@ -148,6 +148,30 @@ func intersection(nums1 []int, nums2 []int) []int {
 }
 ```
 
+### **PHP**
+
+```php
+class Solution {
+    /**
+     * @param Integer[] $nums1
+     * @param Integer[] $nums2
+     * @return Integer[]
+     */
+    function intersection($nums1, $nums2) {
+        $rs = [];
+        $set1 = array_values(array_unique($nums1));
+        $set2 = array_values(array_unique($nums2));
+        for ($i = 0; $i < count($set1); $i++) {
+            $hashmap[$set1[$i]] = 1;
+        }
+        for ($j = 0; $j < count($set2); $j++) {
+            if ($hashmap[$set2[$j]]) array_push($rs, $set2[$j]);
+        }
+        return $rs;
+    }
+}
+```
+
 ### **...**
 
 ```

solution/0300-0399/0349.Intersection of Two Arrays/README_EN.md

@@ -136,6 +136,30 @@ func intersection(nums1 []int, nums2 []int) []int {
 }
 ```
 
+### **PHP**
+
+```php
+class Solution {
+    /**
+     * @param Integer[] $nums1
+     * @param Integer[] $nums2
+     * @return Integer[]
+     */
+    function intersection($nums1, $nums2) {
+        $rs = [];
+        $set1 = array_values(array_unique($nums1));
+        $set2 = array_values(array_unique($nums2));
+        for ($i = 0; $i < count($set1); $i++) {
+            $hashmap[$set1[$i]] = 1;
+        }
+        for ($j = 0; $j < count($set2); $j++) {
+            if ($hashmap[$set2[$j]]) array_push($rs, $set2[$j]);
+        }
+        return $rs;
+    }
+}
+```
+
 ### **...**
 
 ```

solution/0300-0399/0349.Intersection of Two Arrays/Solution.php

@@ -0,0 +1,19 @@
+class Solution {
+    /**
+     * @param Integer[] $nums1
+     * @param Integer[] $nums2
+     * @return Integer[]
+     */
+    function intersection($nums1, $nums2) {
+        $rs = [];
+        $set1 = array_values(array_unique($nums1));
+        $set2 = array_values(array_unique($nums2));
+        for ($i = 0; $i < count($set1); $i++) {
+            $hashmap[$set1[$i]] = 1;
+        }
+        for ($j = 0; $j < count($set2); $j++) {
+            if ($hashmap[$set2[$j]]) array_push($rs, $set2[$j]);
+        }
+        return $rs;
+    }
+}