How to handle errors using try, catch and finally in PHP?

PHP uses exceptions to handle errors. You put risky code in a try block. If something goes wrong, the code throws an exception and PHP jumps to the catch block. The finally block runs always, with or without error.

<?php
function divide($a, $b) {
    if ($b == 0) {
        throw new Exception("Division by zero");
    }
    return $a / $b;
}

try {
    echo divide(10, 2) . "<br>";
    echo divide(5, 0) . "<br>";
} catch (Exception $e) {
    echo "Error: " . $e->getMessage() . "<br>";
} finally {
    echo "Done";
}
?>

Output:

• getMessage() gives the error text, and getLine() gives the line number.
• You can use many catch blocks for different exception types.
• In PHP 7 and above, serious errors are thrown as Error objects. Catch Throwable to catch both Exception and Error.

Basics of PHP errors are in PHP Errors.

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