What are the differences in die() and exit() in PHP?

What are the differences in die() and exit() in PHP

In this article lets understand what are the differences in die() and exit() in PHP.

In PHP, both die() and exit() are used to terminate the execution of a script, but they are essentially the same function with different names. They can be used interchangeably without any functional difference. Here are some key points regarding die() and exit():

  • Functionality: Both die() and exit() are language constructs that halt the execution of a PHP script immediately. They can be used to stop the script from further processing.

  • Output: When die() or exit() is called, they display a message and exit the script. You can pass an optional string message as a parameter to both functions, which will be displayed as the final output before terminating the script.Example usage:
die('Script terminated'); 
exit('Script terminated');

  • Return Value: Neither die() nor exit() return a value. They terminate the script without providing any return value or passing control back to the calling code.

  • Error Handling: By default, both die() and exit() will exit the script with a status of 0, indicating successful termination. However, you can provide an optional exit status code as an integer parameter to indicate an error condition.Example usage:
  • In the below examples, the exit status code is set to 1, indicating an error occurred during script execution.
edie('Error occurred', 1);
exit(1);

  • Usage within Conditional Statements: Both die() and exit() can be used within conditional statements to terminate the script based on certain conditions. In the below example, if the $error condition is true, the script will terminate immediately.
if ($error) { die('An error occurred'); }

Overall, die() and exit() are functionally identical and can be used interchangeably to achieve the same result of terminating a PHP script. The choice between them is mostly a matter of personal preference or code readability.

That’s it on what are the differences in die() and exit() in PHP.