JuniorTheoryCommon

What does the program print?

PHP

<?php

namespace App;

try {
    throw new \RuntimeException('x');
} catch (Exception $e) {
    echo 'app';
} catch (\Exception $e) {
    echo 'global';
}
echo "\n";

global

Expecting catch (Exception $e) to catch it inside a namespace: a class name without \ is looked up in the current namespace, so it means App\Exception, which matches nothing.
Expecting a catch for a missing class to raise an error: PHP never looks that class up, the block silently never matches, and the mistake goes unnoticed.

How do you fix the first catch so that it catches any exception?
Why does strlen() work inside namespace App without a leading backslash?

Back to questions Open topic in roadmap →Answer it yourself — Quiz

Back to questions

JuniorTheoryCommon

What does the program print?

PHP

<?php

namespace App;

try {
    throw new \RuntimeException('x');
} catch (Exception $e) {
    echo 'app';
} catch (\Exception $e) {
    echo 'global';
}
echo "\n";

global

Expecting catch (Exception $e) to catch it inside a namespace: a class name without \ is looked up in the current namespace, so it means App\Exception, which matches nothing.
Expecting a catch for a missing class to raise an error: PHP never looks that class up, the block silently never matches, and the mistake goes unnoticed.

How do you fix the first catch so that it catches any exception?
Why does strlen() work inside namespace App without a leading backslash?

Back to questions Open topic in roadmap →Answer it yourself — Quiz