Throw and Catch

Throwing an exception jumps to the nearest matching catch block.

throw_catch.php

<?php
$divisor = ;

try {
    if ($divisor === 0) {
        throw new Exception("divide by zero");
    }

    $result = 10 / $divisor;
    $status = "ok";
} catch (Exception $error) {
    $result = 0;
    $status = "caught";
}

echo "divisor=" . $divisor . "\n";
echo "status=" . $status . "\n";
echo "result=" . $result . "\n";

<?php
$divisor = ;

try {
    if ($divisor === 0) {
        throw new Exception("divide by zero");
    }

    $result = 10 / $divisor;
    $status = "ok";
} catch (Exception $error) {
    $result = 0;
    $status = "caught";
}

echo "divisor=" . $divisor . "\n";
echo "status=" . $status . "\n";
echo "result=" . $result . "\n";

<?php
$divisor = ;

try {
    if ($divisor === 0) {
        throw new Exception("divide by zero");
    }

    $result = 10 / $divisor;
    $status = "ok";
} catch (Exception $error) {
    $result = 0;
    $status = "caught";
}

echo "divisor=" . $divisor . "\n";
echo "status=" . $status . "\n";
echo "result=" . $result . "\n";

controlled failure A catch block turns a failure path into normal scalar state for the caller.