Explain die() in php.

 Q. Explain die() in php.
Answer:
In PHP, the die() function is used to terminate the execution of a script and print a message before doing so. It can be useful for debugging or handling critical errors. The die() function is an alias of exit().

Here's a simple example:
<?php
$error_message = "Something went wrong.";

// Check for an error condition
if ($error_condition) {
    die($error_message);
}

// The script continues if there is no error condition
echo "This line will only be executed if there's no error.";
?>

In this example, if the $error_condition is true, the script will terminate, and the message "Something went wrong." will be displayed. If the condition is false, the script will continue with the next line, echoing "This line will only be executed if there's no error."

While die() can be helpful for quickly halting script execution and providing an error message, it's generally considered better practice to handle errors more gracefully, such as using exceptions and proper error handling mechanisms. This allows for more control over how errors are handled and reported.