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<?php class Foo { public function doAbd(?int $abc = null) {} } class Bar extends foo { public function doAbd(int $abc = null) {} } $foo = new Foo(); $foo->doAbd(); $bar = new Bar(); $bar->doAbd(); echo "No LSP errors.";
Output for git.master_jit, git.master
Deprecated: Bar::doAbd(): Implicitly marking parameter $abc as nullable is deprecated, the explicit nullable type must be used instead in /in/VmME0 on line 8 No LSP errors.

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