PHP Exceptions

try, catch, finally and custom exceptions.

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Throw an exception when something goes wrong and catch it where you can handle it.

throw new Exception("message");
try { } catch (Exception $e) { } finally { }
Catch several types: catch (TypeError | ValueError $e)
Create your own: class PaymentException extends Exception {}

Key Takeaways: PHP Exceptions

Mastering PHP Exceptions helps you write clean and reliable PHP code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

PHP Exceptions Code Example

PHP

<?php
class InsufficientFundsException extends Exception {}

function withdraw(float $balance, float $amount): float {
    if ($amount > $balance) {
        throw new InsufficientFundsException("Balance too low for Rs $amount");
    }
    return $balance - $amount;
}

try {
    echo withdraw(5000, 2000) . "<br>";
    echo withdraw(5000, 9000) . "<br>";
} catch (InsufficientFundsException $e) {
    echo "Error: " . $e->getMessage() . "<br>";
} finally {
    echo "Done.";
}

Output

3000
Error: Balance too low for Rs 9000
Done.

Run this example on your own computer. The "Get Started" lesson shows how to set it up.

PHP Exceptions Practice Exercises

Check what you learned in “PHP Exceptions”.

/ 2 solved

Fill in the blank

Throw an exception.

 new Exception("Something went wrong");

✓ Correct! Not quite. Try again.

Multiple choice

Which block always runs after try/catch?

finally else always end

✓ Correct! Not quite. Try again.

to save your exercise progress.

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PHP Exceptions

💡 Key Takeaways: PHP Exceptions

PHP Exceptions Code Example

PHP Exceptions Practice Exercises

Key Takeaways: PHP Exceptions