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run code in 300+ PHP versions simultaneously
<?php namespace Foo { class A { public function act() { return static::class; } } } namespace Bar { use \Foo\A as FooA; class A extends FooA {} $fooA = FooA::class; $callable = [new $fooA, 'act']; var_dump($fooA, $callable, $callable()); echo "\n"; $fooA = '\\Foo\\A'; $callable = [new $fooA, 'act']; var_dump($fooA, $callable, $callable()); }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
string(5) "Foo\A" array(2) { [0]=> object(Foo\A)#1 (0) { } [1]=> string(3) "act" } string(5) "Foo\A" string(6) "\Foo\A" array(2) { [0]=> object(Foo\A)#2 (0) { } [1]=> string(3) "act" } string(5) "Foo\A"
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 string(5) "Foo\A" array(2) { [0]=> object(Foo\A)#1 (0) { } [1]=> string(3) "act" } string(5) "Foo\A" string(6) "\Foo\A" array(2) { [0]=> object(Foo\A)#2 (0) { } [1]=> string(3) "act" } string(5) "Foo\A"

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