How to determine if it is a folder in php

In PHP, you can use the is_dir() function to determine whether it is a folder. The function of this function is to check whether the specified file is a directory (folder), the syntax is "is_dir(file)"; if If it is a folder, TRUE is returned.

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

In php, you can use the is_dir() function to determine whether it is a folder.

is_dir() function checks whether the specified file is a directory. Syntax:

is_dir(file)

• file: required parameter, specifies the file to be checked.

If the directory exists, this function returns TRUE.

Example: Determine whether the img file is a folder

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

Output result:

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