The catch Function
The catch function is part of the try-catch block and serves to intercept exceptions that may be thrown in the try block. When an exception occurs, code execution moves to the corresponding catch block, where the error can be handled.
Syntax
try {
// Code that may throw an exception
} catch (ExceptionType $e) {
// Exception handling
}
Example
A simple exception handling example:
<?php
try {
throw new Exception('Something went wrong');
} catch (Exception $e) {
echo 'Caught exception: ' . $e->getMessage();
}
?>
Code execution result:
'Caught exception: Something went wrong'
Example
Handling different types of exceptions:
<?php
try {
if (rand(0, 1)) {
throw new InvalidArgumentException('Invalid argument');
} else {
throw new RuntimeException('Runtime error');
}
} catch (InvalidArgumentException $e) {
echo 'Invalid argument: ' . $e->getMessage();
} catch (RuntimeException $e) {
echo 'Runtime error: ' . $e->getMessage();
} catch (Exception $e) {
echo 'Generic exception: ' . $e->getMessage();
}
?>
Possible code execution results:
'Invalid argument: Invalid argument'
or
'Runtime error: Runtime error'
