wpcf7_special_mail_tags │ хук-фильтр │ CF7 1.0

Использование

add_filter( 'wpcf7_special_mail_tags', 'wp_kama_wpcf7_special_mail_tags_filter', 10, 4 );

/**
 * Function for `wpcf7_special_mail_tags` filter-hook.
 * 
 * @param  $null     
 * @param  $tag_name 
 * @param  $html     
 * @param  $mail_tag 
 *
 * @return 
 */
function wp_kama_wpcf7_special_mail_tags_filter( $null, $tag_name, $html, $mail_tag ){

	// filter...
	return $null;
}
$null
-
$tag_name
-
$html
-
$mail_tag
-

Где вызывается хук

WPCF7_MailTaggedText::replace_tags_callback()
wpcf7_special_mail_tags
wpcf7_flamingo_submit()
wpcf7_special_mail_tags
contact-form-7/includes/mail.php 600-602 
$special = apply_filters( 'wpcf7_special_mail_tags', null,
	$mail_tag->tag_name(), $html, $mail_tag
);
contact-form-7/modules/flamingo.php 73-75 
$meta[$smt] = apply_filters( 'wpcf7_special_mail_tags', null,
	$tagname, false, $mail_tag
);

Где используется хук в Contact Form 7

contact-form-7/includes/special-mail-tags.php 147 
add_filter( 'wpcf7_special_mail_tags', 'wpcf7_site_related_smt', 10, 4 );
contact-form-7/includes/special-mail-tags.php 201 
add_filter( 'wpcf7_special_mail_tags', 'wpcf7_user_related_smt', 10, 4 );
contact-form-7/includes/special-mail-tags.php 7 
add_filter( 'wpcf7_special_mail_tags', 'wpcf7_special_mail_tag', 10, 4 );
contact-form-7/includes/special-mail-tags.php 81 
add_filter( 'wpcf7_special_mail_tags', 'wpcf7_post_related_smt', 10, 4 );
contact-form-7/modules/flamingo.php 289 
add_filter( 'wpcf7_special_mail_tags', 'wpcf7_flamingo_serial_number', 10, 4 );