Code Duplication    Length = 6-6 lines in 2 locations

other/install.php 2 locations

@@ 1482-1487 (lines=6) @@
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			$incontext['error'] = $txt['error_invalid_characters_username'];
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			return false;
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		}
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		elseif (empty($_POST['email']) || !filter_var(stripslashes($_POST['email']), FILTER_VALIDATE_EMAIL) || strlen(stripslashes($_POST['email'])) > 255)
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		{
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			// One step back, this time fill out a proper admin email address.
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			$incontext['error'] = sprintf($txt['error_valid_admin_email_needed'], $_POST['username']);
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			return false;
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		}
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		elseif (empty($_POST['server_email']) || !filter_var(stripslashes($_POST['server_email']), FILTER_VALIDATE_EMAIL) || strlen(stripslashes($_POST['server_email'])) > 255)
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		{
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			// One step back, this time fill out a proper admin email address.
@@ 1488-1493 (lines=6) @@
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			$incontext['error'] = sprintf($txt['error_valid_admin_email_needed'], $_POST['username']);
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			return false;
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		}
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		elseif (empty($_POST['server_email']) || !filter_var(stripslashes($_POST['server_email']), FILTER_VALIDATE_EMAIL) || strlen(stripslashes($_POST['server_email'])) > 255)
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		{
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			// One step back, this time fill out a proper admin email address.
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			$incontext['error'] = $txt['error_valid_server_email_needed'];
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			return false;
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		}
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		elseif ($_POST['username'] != '')
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		{
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			$incontext['member_salt'] = substr(md5(mt_rand()), 0, 4);