What are common debugging techniques in PHP to identify issues in code?

One common debugging technique in PHP is to use var_dump() or print_r() functions to display the contents of variables and arrays, helping to identify unexpected values or structures. Another technique is to enable error reporting by setting error_reporting to E_ALL and display_errors to On in the php.ini file or using ini_set() function. Additionally, using die() or exit() functions at different points in the code can help isolate where the issue may be occurring.

// Using var_dump() to display the contents of a variable
$variable = "Hello, World!";
var_dump($variable);

// Enabling error reporting in PHP
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Using die() to halt the script and display a message
if ($condition) {
    die("Condition is true");
}