鍦≒HP涓紝鍙互閫氳繃浠ヤ笅鍑犵鏂规硶鏉ラ檺鍒朵笂浼犳枃浠剁殑绫诲瀷锛?/p>

1. 閫氳繃鍚庣紑鍚嶉檺鍒讹細 鍙互浣跨敤pathinfo()鍑芥暟鑾峰彇涓婁紶鏂囦欢鐨勫悗缂€鍚嶏紝鐒跺悗涓庡厑璁哥殑鏂囦欢绫诲瀷杩涜姣旇緝锛屽鏋滀笉鍦ㄥ厑璁哥殑鏂囦欢绫诲瀷鍒楄〃涓紝鍒欐嫆缁濅笂浼犮€備緥濡傦細

   $allowedTypes = array('jpg', 'jpeg', 'png', 'gif');
   $fileExtension = pathinfo($_FILES['file']['name'], PATHINFO_EXTENSION);
   
   if(!in_array($fileExtension, $allowedTypes)){
       echo "鍙厑璁镐笂浼?jpg, jpeg, png, gif 鏂囦欢";
       exit;
   }
   

2. 閫氳繃MIME绫诲瀷闄愬埗锛?鍙互浣跨敤$_FILES['file']['type']鑾峰彇涓婁紶鏂囦欢鐨凪IME绫诲瀷锛岀劧鍚庝笌鍏佽鐨凪IME绫诲瀷杩涜姣旇緝锛屽鏋滀笉鍦ㄥ厑璁哥殑MIME绫诲瀷鍒楄〃涓紝鍒欐嫆缁濅笂浼犮€備緥濡傦細

   $allowedMimeTypes = array('image/jpeg', 'image/png', 'image/gif');
   $fileMimeType = $_FILES['file']['type'];
   
   if(!in_array($fileMimeType, $allowedMimeTypes)){
       echo "鍙厑璁镐笂浼犲浘鐗囨枃浠?quot;;
       exit;
   }
   

3. 缁煎悎鍒ゆ柇锛?鍙互缁撳悎浣跨敤鍚庣紑鍚嶅拰MIME绫诲瀷杩涜鍒ゆ柇锛屽鍔犲畨鍏ㄦ€с€傚嵆鍏堥€氳繃鍚庣紑鍚嶉檺鍒跺垽鏂紝鍐嶉€氳繃MIME绫诲瀷闄愬埗鍒ゆ柇銆備緥濡傦細

   $allowedTypes = array('jpg', 'jpeg', 'png', 'gif');
   $allowedMimeTypes = array('image/jpeg', 'image/png', 'image/gif');
   $fileExtension = pathinfo($_FILES['file']['name'], PATHINFO_EXTENSION);
   $fileMimeType = $_FILES['file']['type'];
   
   if(!in_array($fileExtension, $allowedTypes) || !in_array($fileMimeType, $allowedMimeTypes)){
       echo "鍙厑璁镐笂浼犲浘鐗囨枃浠?quot;;
       exit;
   }
   

浠ヤ笂鏂规硶鍙互鍦ㄦ枃浠朵笂浼犲墠杩涜鍒ゆ柇锛屽鏋滀笉绗﹀悎瑕佹眰锛屽垯鎷掔粷涓婁紶銆?/p>