只取第一個字

home.php

@@ -156,7 +156,7 @@ include($_SERVER['DOCUMENT_ROOT'] . "/Authorization/script/php/permission/check_
 
 	<script>
 		$(document).ready(function() {
-			addUserImage(name);
+			addUserImage(name.charAt(0));
 		})
 		function addUserImage(name) {
 			var canvas = document.createElement("canvas");