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<?php $emailHash = ''; var_dump($emailHash[0] ?? ''); var_dump('!' === $emailHash[0] ?? ''); var_dump('!' === ($emailHash[0] ?? ''));
Output for rfc.property-hooks, git.master, git.master_jit
string(0) "" Warning: Uninitialized string offset 0 in /in/nP0Qf on line 7 bool(false) bool(false)

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