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<?php class MyClass {} function f() { $c = new MyClass(); $s = 'MyClass'; if ($c instanceof $s) { echo "yes1\n"; } else { echo "no1\n"; } $s = 'My'; if ($c instanceof ($s.'Class')) { echo "yes2\n"; } else { echo "no2\n"; } } f();
Output for git.master, git.master_jit, rfc.property-hooks
yes1 yes2

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