feat: add php solution to lc problem: No.2351 (doocs#994)

Qiu-IT · web-flow · commit 59ddbbdebdfd · 2023-04-23T15:25:44.000+08:00
diff --git a/solution/2300-2399/2351.First Letter to Appear Twice/README.md b/solution/2300-2399/2351.First Letter to Appear Twice/README.md
@@ -270,6 +270,23 @@ char repeatedCharacter(char *s) {
 }
 ```
 
+### **PHP**
+
+```php
+class Solution {
+    /**
+     * @param String $s
+     * @return String
+     */
+    function repeatedCharacter($s) {
+        for ($i = 0;; $i++) {
+            $hashtable[$s[$i]] += 1;
+            if ($hashtable[$s[$i]] == 2) return $s[$i];
+        }
+    }
+}
+```
+
 ### **...**
 
 ```
diff --git a/solution/2300-2399/2351.First Letter to Appear Twice/README_EN.md b/solution/2300-2399/2351.First Letter to Appear Twice/README_EN.md
@@ -250,6 +250,23 @@ char repeatedCharacter(char *s) {
 }
 ```
 
+### **PHP**
+
+```php
+class Solution {
+    /**
+     * @param String $s
+     * @return String
+     */
+    function repeatedCharacter($s) {
+        for ($i = 0;; $i++) {
+            $hashtable[$s[$i]] += 1;
+            if ($hashtable[$s[$i]] == 2) return $s[$i];
+        }
+    }
+}
+```
+
 ### **...**
 
 ```
diff --git a/solution/2300-2399/2351.First Letter to Appear Twice/Solution.php b/solution/2300-2399/2351.First Letter to Appear Twice/Solution.php
@@ -0,0 +1,12 @@
+class Solution {
+    /**
+     * @param String $s
+     * @return String
+     */
+    function repeatedCharacter($s) {
+        for ($i = 0;; $i++) {
+            $hashtable[$s[$i]] += 1;
+            if ($hashtable[$s[$i]] == 2) return $s[$i];
+        }
+    }
+}
