<?php
namespace Foo
{
class Bar {
};
}
namespace {
use Foo\Bar;
class_alias(Bar::class, 'FooBar');
class FooBar {};
class GuineaPig {
public function withNamespace(Bar $bar)
{
echo sprintf("Passing %s worked with %s\n", get_class($bar), __METHOD__);
}
public function withoutNamespace(FooBar $bar)
{
echo sprintf("Passing %s worked with %s\n", get_class($bar), __METHOD__);
}
}
$bar = new Bar();
$foobar = new FooBar();
$pig = new GuineaPig();
$pig->withNamespace($bar);
$pig->withoutNamespace($foobar);
$pig->withNamespace($foobar);
$pig->withoutNamespace($bar);
}
Warning: Cannot declare class FooBar, because the name is already in use in /in/kBsXT on line 13
Passing Foo\Bar worked with GuineaPig::withNamespace
Passing FooBar worked with GuineaPig::withoutNamespace
Fatal error: Uncaught TypeError: GuineaPig::withNamespace(): Argument #1 ($bar) must be of type Foo\Bar, FooBar given, called in /in/kBsXT on line 35 and defined in /in/kBsXT:18
Stack trace:
#0 /in/kBsXT(35): GuineaPig->withNamespace(Object(FooBar))
#1 {main}
thrown in /in/kBsXT on line 18
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Warning: Cannot declare class FooBar, because the name is already in use in /in/kBsXT on line 13
Passing Foo\Bar worked with GuineaPig::withNamespace
Passing FooBar worked with GuineaPig::withoutNamespace
Fatal error: Uncaught TypeError: GuineaPig::withNamespace(): Argument #1 ($bar) must be of type Foo\Bar, FooBar given, called in /in/kBsXT on line 35 and defined in /in/kBsXT:18
Stack trace:
#0 /in/kBsXT(35): GuineaPig->withNamespace(Object(FooBar))
#1 {main}
thrown in /in/kBsXT on line 18
Process exited with code 255.
Warning: Cannot declare class FooBar, because the name is already in use in /in/kBsXT on line 13
Passing Foo\Bar worked with GuineaPig::withNamespace
Passing FooBar worked with GuineaPig::withoutNamespace
Fatal error: Uncaught TypeError: Argument 1 passed to GuineaPig::withNamespace() must be an instance of Foo\Bar, instance of FooBar given, called in /in/kBsXT on line 35 and defined in /in/kBsXT:18
Stack trace:
#0 /in/kBsXT(35): GuineaPig->withNamespace(Object(FooBar))
#1 {main}
thrown in /in/kBsXT on line 18
Process exited with code 255.