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                # 驗證文件擴展名格式: 代碼案例: ``` $ba=$FILES['接受的名稱']; $a=pathinfo($_ba['name'],PATHINFO_EXTENSION) ; //獲取文件類型名稱 //$_ba['name'] 這里面是接收回來的數組 $b=['jpg','png','gif','jpg']; if(in_array($a,$b)) //判斷獲取的文件類型名稱是否在$b數組里面 { echo '可以上傳'; } else{ exit( '不能上傳'); //這樣終止下面的程序 } ``` pathinfo($_FILES['接受的名稱'],PATHINFO_EXTENSION) ; //獲取上傳文件 類型名稱 (就是.txt 或則.jpg等等) <br/><br/> # 驗證文件大小: ~~~ $da=2097152; //這里為2M 這單位是字節 if($ba['size']>$da) //這里的$ba['size']是返回的數組里文件大小的值 { exit('圖片過大'); } ~~~
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