What are the potential pitfalls of using FTP connections to check for file existence in PHP?

One potential pitfall of using FTP connections to check for file existence in PHP is that it can be slow and inefficient, especially for large numbers of files. Additionally, FTP connections require authentication credentials, which may expose sensitive information if not handled securely. To solve this issue, consider using other methods such as using filesystem functions like file_exists() or is_file() to check for file existence locally. 

// Check for file existence using filesystem functions
$file_path = '/path/to/file.txt';

if (file_exists($file_path)) {
    echo 'File exists.';
} else {
    echo 'File does not exist.';
}

Keywords

FTP connections file existence PHP potential pitfalls error types

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