How to check if a folder exists in php, wordpress

To check if a folder exists in PHP, you can use the is_dir() function. This function returns true if the path is an existing directory and false otherwise.

Example:

$path = '/path/to/folder';

if (is_dir($path)) {
    echo 'Folder exists';
} else {
    echo 'Folder does not exist';
}

In the context of WordPress, you can also use built-in WordPress functions for working with files and directories. For example, the wp_mkdir_p() function will create a directory if it does not already exist.

Example for checking and creating a directory:

$upload_dir = wp_upload_dir(); // Get the WordPress uploads directory
$path = $upload_dir['basedir'] . '/custom_folder';

if (!is_dir($path)) {
    wp_mkdir_p($path); // Create the directory if it does not exist
    echo 'Folder was created';
} else {
    echo 'Folder already exists';
}

This code checks for the presence of a folder in the WordPress uploads directory and creates it if it is missing.