How can PHP developers check if a file exists before including it in their code?

PHP developers can check if a file exists before including it in their code by using 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 checking if the file exists before including it, developers can avoid potential errors and ensure that their code runs smoothly. 

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

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

Keywords

PHP file_exists include file handling error handling

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