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<?php $var = ['foo' => 'bar']; var_dump($var['foo']); $var['foo'] = null; var_dump($var['foo']); unset($var['foo']); var_dump($var['foo']);
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "bar" NULL Warning: Undefined array key "foo" in /in/eistu on line 10 NULL

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