$scf_input_name = isset($scf_options['scf_input_name']) ?: null;
$scf_input_email = isset($scf_options['scf_input_email']) ?: null;
$scf_input_subject = isset($scf_options['scf_input_subject']) ?: null;
$scf_input_captcha = isset($scf_options['scf_input_captcha']) ?: null;
$scf_input_message = isset($scf_options['scf_input_message']) ?: null;
$scf_strings = array(
'name' => '<input name="scf_name" id="scf_name" type="text" size="33" maxlength="99" value="' . $value_name . '" placeholder="' . $scf_input_name . '" />',
'email' => '<input name="scf_email" id="scf_email" type="text" size="33" maxlength="99" value="' . $value_email . '" placeholder="' . $scf_input_email . '" />',
'subject' => '<input name="scf_subject" id="scf_subject" type="text" size="33" maxlength="99" value="' . $value_subject . '" placeholder="' . $scf_input_subject . '" />',
'response' => '<input name="scf_response" id="scf_response" type="text" size="33" maxlength="99" value="' . $value_response . '" placeholder="' . $scf_input_captcha . '" />',
'message' => '<textarea name="scf_message" id="scf_message" cols="33" rows="7" placeholder="' . $scf_options['scf_input_message'] . '">' . $value_message . '</textarea>',
'error' => ''
);