PHP `die()` vs. `exit()`: What's the Real Difference?

Understanding the Functionalities of die() and exit() in PHP

PHP offers two built-in functions, die() and exit(), which enable developers to terminate the execution of a script. While they share the same primary purpose, there are subtle differences warranting further exploration.

Functionality Comparison

Contrary to popular belief, there is no functional distinction between die() and exit(). Both functions immediately halt script execution and display the provided message (if any) before terminating the script.

Equivalence Confirmation

This equivalence is explicitly stated in the PHP Manual:

• exit: "Note: This language construct is equivalent to die()."
• die: "This language construct is equivalent to exit()."

Additional Information

• die() is a language construct, while exit() is a function.
• die() has a slightly different syntax, using parentheses, while exit() requires only the function name.
• Since die() and exit() behave identically, it is generally preferred to use die() due to its shorter syntax.

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