Interview question

How do you handle multiple exception types in a single catch block? एक ही catch block में कई exception types कैसे handle करें?

Answer

PHP allows catching multiple exception types in one catch block using the pipe | separator, avoiding repeated identical catch bodies.

try {
    processPayment();
} catch (InsufficientFundsException | CardDeclinedException $e) {
    echo 'Payment failed: ' . $e->getMessage();
    logPaymentFailure($e);
} catch (Throwable $e) {
    echo 'Unexpected error occurred';
    logCriticalError($e);
}

Approach	When to use
Single catch with \|	Multiple exception types need identical handling
Multiple separate catch blocks	Each exception type needs different handling logic
Catch order	PHP checks catch blocks top to bottom - put more specific exception types before general ones like Throwable

Interview tip: Mention the catch order rule explicitly - putting a general catch (Throwable) before a specific one makes the specific one unreachable, which is a real bug PHP will not warn you about at compile time in older versions.

PHP एक catch block में pipe | separator से कई exception types catch करने देता है, बार-बार identical catch bodies लिखने से बचाते हुए।

try {
    processPayment();
} catch (InsufficientFundsException | CardDeclinedException $e) {
    echo 'Payment failed: ' . $e->getMessage();
    logPaymentFailure($e);
} catch (Throwable $e) {
    echo 'Unexpected error occurred';
    logCriticalError($e);
}

तरीका	कब इस्तेमाल करें
Single catch with \|	कई exception types को identical handling चाहिए
अलग-अलग catch blocks	हर exception type को अलग handling logic चाहिए
Catch order	PHP catch blocks ऊपर से नीचे चेक करता है - specific exception types को Throwable जैसे general से पहले रखें

इंटरव्यू टिप: catch order नियम स्पष्ट रूप से बताएं - general catch (Throwable) को specific से पहले रखने पर specific unreachable हो जाता है, यह असली bug है जिसकी warning पुराने versions में compile time पर नहीं मिलती।

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