What are common pitfalls when using is_file in PHP loops to check for file existence?

Common pitfalls when using is_file in PHP loops to check for file existence include not properly handling file paths, leading to incorrect results, and not considering file permissions which can lead to false negatives. To solve this, always use absolute file paths and ensure that the file paths are correctly formatted. Additionally, check the file permissions to make sure that the PHP script has the necessary permissions to access the files. 

$directory = 'path/to/directory';

foreach(glob($directory . '/*') as $file) {
    if(is_file($file)) {
        // Perform actions on the file
    }
}

Keywords

is_file PHP loops file existence error handling file checking

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