Online PHP editor | output for NuX6K

@ 2021-10-07T10:39:58Z

<?php

class Demo { }

// An "autoload" handler creating an alias for the same class
spl_autoload_register(function ($class) {
    echo "autoload $class\n";
	class_alias('Demo', $class);
});

// Create a Demo object using "A"
// and pass that to function expecting "A"
function success(A $test) {
	echo "Success ".get_class($test)."\n";
}
echo "1\n";
success(new A());

// Create a Demo object using "B",
// then create another Demo object using "C"
// and pass that to function expecting "B"
function also(B $test) {
	echo "Success ".get_class($test)."\n";
}
echo "2\n";
new B();
echo "3\n";
also(new C());

// Create a Demo object using "X",
// and pass that to function expecting "B"
function fail(X $test) {
	echo "Success ".get_class($test)."\n";
}
echo "4\n";
fail(new Y());

// Note that all of these names refer to the same class,
// and all objects are of the same class

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: 1 autoload A Success Demo 2 autoload B 3 autoload C Success Demo 4 autoload Y Fatal error: Uncaught TypeError: fail(): Argument #1 ($test) must be of type X, Demo given, called in /in/NuX6K on line 36 and defined in /in/NuX6K:32 Stack trace: #0 /in/NuX6K(36): fail(Object(Demo)) #1 {main} thrown in /in/NuX6K on line 32
Process exited with code 255.
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.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: 1 autoload A Success Demo 2 autoload B 3 autoload C Success Demo 4 autoload Y Fatal error: Uncaught TypeError: Argument 1 passed to fail() must be an instance of X, instance of Demo given, called in /in/NuX6K on line 36 and defined in /in/NuX6K:32 Stack trace: #0 /in/NuX6K(36): fail(Object(Demo)) #1 {main} thrown in /in/NuX6K on line 32
Process exited with code 255.

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