diff --git a/problems/0001.两数之和.md b/problems/0001.两数之和.md
index 31a808b0..5be94996 100644
--- a/problems/0001.两数之和.md
+++ b/problems/0001.两数之和.md
@@ -187,7 +187,23 @@ var twoSum = function (nums, target) {
 };
 ```
 
+php
 
+```php
+function twoSum(array $nums, int $target): array
+{
+    for ($i = 0; $i < count($nums);$i++) {
+        // 计算剩下的数
+        $residue = $target - $nums[$i];
+        // 匹配的index，有则返回index， 无则返回false
+        $match_index = array_search($residue, $nums);
+        if ($match_index !== false && $match_index != $i) {
+            return array($i, $match_index);
+        }
+    }
+    return [];
+}
+```
 
 
 -----------------------