Check the file name in the upload folder before uploading the file

Question

I am use the following code:

if(file_exists("upload/" . '1.txt')
....

This code checks only the file with the name of "1" and ".txt" in the upload folder There is or not. I want to check it for any file named "1" with any extension (for example 1.jpg, 1.png, ...). What is the simplest code that comes to your mind?

Answer 1

$result = glob ("upload/1.*");

并查看$ result是否包含任何内容。

Answer 2

if(preg_match("/^1\.(jpg|jpeg|png|gif)$/",$filename)){}