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Editor to share with you how PHP uses the is_dir () function, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Is_dir ();-- determines whether a given file name is a directory

Bool is_dir (string $filename) / / determines whether a given file name is a directory.

Parameter: filename: returns TRUE if the file name exists and is a directory. If filename is a relative path, check its relative path against the current working directory.

$filename ='d:\ test\ test.txt';var_dump (is_dir ('$filename')); / / bool (false) var_dump (is_dir ('d:\ test')); / / bool (true) above is all the content of the article "how PHP uses the is_dir () function". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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