Recover with Default

A catch block can choose a default value and let the program continue.

recover_default.php

<?php
function parseCount(string $raw): int
{
    if (!ctype_digit($raw)) {
        throw new Exception("not a number");
    }

    return (int) $raw;
}

$raw = ;

try {
    $count = parseCount($raw);
    $source = "input";
} catch (Exception $error) {
    $count = 0;
    $source = "default";
}

echo "raw=" . $raw . "\n";
echo "count=" . $count . "\n";
echo "source=" . $source . "\n";

<?php
function parseCount(string $raw): int
{
    if (!ctype_digit($raw)) {
        throw new Exception("not a number");
    }

    return (int) $raw;
}

$raw = ;

try {
    $count = parseCount($raw);
    $source = "input";
} catch (Exception $error) {
    $count = 0;
    $source = "default";
}

echo "raw=" . $raw . "\n";
echo "count=" . $count . "\n";
echo "source=" . $source . "\n";

<?php
function parseCount(string $raw): int
{
    if (!ctype_digit($raw)) {
        throw new Exception("not a number");
    }

    return (int) $raw;
}

$raw = ;

try {
    $count = parseCount($raw);
    $source = "input";
} catch (Exception $error) {
    $count = 0;
    $source = "default";
}

echo "raw=" . $raw . "\n";
echo "count=" . $count . "\n";
echo "source=" . $source . "\n";

fallback Recovery usually means producing a clear fallback value, not hiding the failure.