66  * @param string $field_name
69 function Auth_OpenID_checkFieldName($field_name)  argument
73     if (!in_array($field_name, array_keys($Auth_OpenID_sreg_data_fields))) {
297                 foreach (explode(',', $items) as $field_name) {
298                     if (!$this->requestField($field_name, $required, $strict)) {
332      * @param string $field_name
335     function contains($field_name)  argument
337         return (in_array($field_name, $this->required) ||
338                 in_array($field_name, $this->optional));
352      * @param string $field_name
357     function requestField($field_name,  argument
360         if (!Auth_OpenID_checkFieldName($field_name)) {
365             if ($this->contains($field_name)) {
369             if (in_array($field_name, $this->required)) {
373             if (in_array($field_name, $this->optional)) {
375                     unset($this->optional[array_search($field_name,
384             $this->required[] = $field_name;
386             $this->optional[] = $field_name;
414         foreach ($field_names as $field_name) {
415             if (!$this->requestField($field_name, $required, $strict)) {
545         foreach ($Auth_OpenID_sreg_data_fields as $field_name => $desc) {
546             if (in_array($field_name, array_keys($args))) {
547                 $obj->data[$field_name] = $args[$field_name];
567     function get($field_name, $default=null)  argument
569         if (!Auth_OpenID_checkFieldName($field_name)) {
573         return Auth_OpenID::arrayGet($this->data, $field_name, $default);