Online PHP editor | output for Q2H2Z

@ 2023-03-13T11:22:49Z

<?php

function foo(int $a) {
    var_dump($a);
}

function define_callbacks() {
    $string = 'foo';
    $lambda = fn(...$args) => foo(...$args);
    $fcc = foo(...);
    
    return [$string, $lambda, $fcc];
}

function test_callback($callback) {
    $callback(1);
    try {
        $callback(new class{});
    } catch ( TypeError $e ) {
        echo $e->getMessage(), "\n";
    }
}

[$string, $lambda, $fcc] = define_callbacks();

echo "== String-based ==\n";
test_callback($string);

echo "\n== Type-less lambda ==\n";
test_callback($lambda);

echo "\n== First-class callable ==\n";
test_callback($fcc);

Output for 8.1.30 - 8.1.33, 8.2.3 - 8.2.29, 8.3.5 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: == String-based == int(1) foo(): Argument #1 ($a) must be of type int, class@anonymous given, called in /in/Q2H2Z on line 18 == Type-less lambda == int(1) foo(): Argument #1 ($a) must be of type int, class@anonymous given, called in /in/Q2H2Z on line 9 == First-class callable == int(1) foo(): Argument #1 ($a) must be of type int, class@anonymous given, called in /in/Q2H2Z on line 18
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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