How can debugging techniques be used to identify the root cause of the error in PHP code?

To identify the root cause of an error in PHP code, debugging techniques such as using print statements, var_dump, or debuggers can be employed. By systematically analyzing the code and checking the values of variables at different points in the program, developers can pinpoint where the error occurs and why it is happening.

// Example code snippet demonstrating the use of var_dump to debug PHP code
$variable = 5;
var_dump($variable);