What are common debugging techniques for resolving PHP code issues?

One common debugging technique for resolving PHP code issues is to use error reporting to display any errors or warnings that may be occurring in the code. This can be done by setting the error_reporting level to E_ALL at the beginning of the script. Another technique is to use var_dump() or print_r() functions to inspect the values of variables and arrays at different points in the code to identify any unexpected behavior.

// Set error reporting level to display all errors and warnings
error_reporting(E_ALL);

// Use var_dump() to inspect the value of a variable
$variable = 5;
var_dump($variable);