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PHP is_dir () function

PHP Filesystem Reference Manual Complete PHP Filesystem Reference Manual

Definition and Usage

Are is_dir () function checks the specified file is a directory.

If the directory exists, the function returns TRUE.

grammar

is_dir(file)

参数 描述
file 必需。规定要检查的文件。


Tips and Notes

Note: The results of this function are cached.Use clearstatcache () to clear the cache.


Examples

<?php
$file = "images";
if(is_dir($file))
{
echo ("$file is a directory");
}
else
{
echo ("$file is not a directory");
}
?>

The code above will output:

images is a directory


PHP Filesystem Reference Manual Complete PHP Filesystem Reference Manual