<?php
class Foo {
protected $label;
public function __construct($label) {
$this->label = $label;
}
}
class Baz{}
class Bar {
public function test(Foo $foo = null) {
if( is_null($foo) ) {
$foo = new Foo('I am not magic.');
}
var_dump($foo);
}
}
$baz = new Bar();
$baz->test(new Foo('burp'));
$baz->test();
$baz->test(new Baz());
object(Foo)#2 (1) {
["label":protected]=>
string(4) "burp"
}
object(Foo)#2 (1) {
["label":protected]=>
string(15) "I am not magic."
}
Fatal error: Uncaught TypeError: Bar::test(): Argument #1 ($foo) must be of type ?Foo, Baz given, called in /in/rc2qH on line 25 and defined in /in/rc2qH:14
Stack trace:
#0 /in/rc2qH(25): Bar->test(Object(Baz))
#1 {main}
thrown in /in/rc2qH on line 14
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
object(Foo)#2 (1) {
["label":protected]=>
string(4) "burp"
}
object(Foo)#2 (1) {
["label":protected]=>
string(15) "I am not magic."
}
Fatal error: Uncaught TypeError: Bar::test(): Argument #1 ($foo) must be of type ?Foo, Baz given, called in /in/rc2qH on line 25 and defined in /in/rc2qH:14
Stack trace:
#0 /in/rc2qH(25): Bar->test(Object(Baz))
#1 {main}
thrown in /in/rc2qH on line 14
Process exited with code 255.
object(Foo)#2 (1) {
["label":protected]=>
string(4) "burp"
}
object(Foo)#2 (1) {
["label":protected]=>
string(15) "I am not magic."
}
Fatal error: Uncaught TypeError: Argument 1 passed to Bar::test() must be an instance of Foo or null, instance of Baz given, called in /in/rc2qH on line 25 and defined in /in/rc2qH:14
Stack trace:
#0 /in/rc2qH(25): Bar->test(Object(Baz))
#1 {main}
thrown in /in/rc2qH on line 14
Process exited with code 255.
Output for 7.0.0 - 7.0.33
object(Foo)#2 (1) {
["label":protected]=>
string(4) "burp"
}
object(Foo)#2 (1) {
["label":protected]=>
string(15) "I am not magic."
}
Fatal error: Uncaught TypeError: Argument 1 passed to Bar::test() must be an instance of Foo, instance of Baz given, called in /in/rc2qH on line 25 and defined in /in/rc2qH:14
Stack trace:
#0 /in/rc2qH(25): Bar->test(Object(Baz))
#1 {main}
thrown in /in/rc2qH on line 14
Process exited with code 255.
Output for 5.6.0 - 5.6.40
object(Foo)#2 (1) {
["label":protected]=>
string(4) "burp"
}
object(Foo)#2 (1) {
["label":protected]=>
string(15) "I am not magic."
}
Catchable fatal error: Argument 1 passed to Bar::test() must be an instance of Foo, instance of Baz given, called in /in/rc2qH on line 25 and defined in /in/rc2qH on line 14
Process exited with code 255.