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<?php preg_match('/^[\w][\w-.]+@[\w-.]+\.[a-z]{2,4}$/U', $password, $found); print_r($found);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $password in /in/C8BX2 on line 2 Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/C8BX2 on line 2 Warning: preg_match(): Compilation failed: invalid range in character class at offset 8 in /in/C8BX2 on line 2

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