assert
PHP 4, PHP 5, PHP 7, PHP 8
assert - Checks if assertion is false
Code Examples
Example #1 Using a custom handler to print a description
Result: Assertion failed at test.php:21: 2 < 1
Assertion failed at test.php:22: 2 < 1: Two is less than one
Example #2 Handle a failed assertion with a custom handler
Example #3 Expectations without a custom exception
Result: Hi!
Example #4 Expectations with a custom exception
Result: Hi!