How can file paths and file existence be properly checked when using include in PHP?

When using include in PHP to include files, it is important to properly check file paths and file existence to prevent errors. This can be done by using the file_exists() function to check if the file exists before including it. Additionally, it is recommended to use absolute file paths to ensure that the correct file is included. 

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

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

Keywords

file paths file existence include PHP error types

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