How can errors related to undefined constants be avoided when working with paths in PHP scripts?

When working with paths in PHP scripts, errors related to undefined constants can be avoided by using the `defined()` function to check if the constant is defined before using it. This helps prevent PHP from throwing errors when trying to access undefined constants. 

if(defined('CONSTANT_NAME')) {
    // Use the constant here
    echo CONSTANT_NAME;
} else {
    // Handle the case where the constant is not defined
    echo "Constant not defined";
}

Keywords

PHP constants paths error handling defined

Related Questions