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<?php $recipients = ["kumar","ram@test.com","ravi","rob@example.com"]; $pattern = "/^[^\s@]+@[^\s@]+\.[^\s@]+$/"; $s = implode( ", ", array_map(fn($user) => preg_match($pattern, $user) ? $user : $user . "@test.com", $recipients) ); echo $s;
Output for git.master_jit, git.master, rfc.property-hooks
kumar@test.com, ram@test.com, ravi@test.com, rob@example.com

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