How to determine if it is a file in php

In PHP, you can use is_file() to determine whether it is a file. The function of this function is to check whether the specified file is a regular file. The syntax is "is_file(file)"; if the file is a regular file , this function will return TRUE.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, you can use is_file() to Determine whether it is a file.

is_file() function checks whether the specified file is a regular file. Syntax:

is_file(file)

• Parameter file: required. Specifies the documents to be checked.​

If the file is a regular file, this function returns TRUE.

Example:

<?php
header("Content-type:text/html;charset=utf-8");
$file = "test.txt";
if(is_file($file))
{
echo ("$file 是文件");
}
else
{
echo ("$file 不是文件");
}
?>

Output result:

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