function greet() { echo "Hello, world!"; } $reflection = new ReflectionFunction('greet'); $endLine = $reflection->getEndLine(); echo "The function ends on line " . $endLine . ".";This code defines a simple function called greet, then uses ReflectionFunction to retrieve information about the function. Specifically, we use getEndLine to get the line number where the function definition ends, which in this case is line 3. Package library: This functionality comes packaged with PHP's ReflectionFunction class in the core PHP library.