How can PHP be used to check if a file exists?

To check if a file exists in PHP, you can use the `file_exists()` function. This function takes a file path as an argument and returns true if the file exists and false if it does not. By using this function, you can easily determine whether a specific file is present on the server. 

$file_path = 'path/to/file.txt';

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

Keywords

PHP file_exists file path error handling conditional statement

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