CI form data echo function set_value () transformation-PHP source code

The set_value () function of CI form data echo is transformed to the set_value () function of CI to process fields in array form.

if ( ! function_exists('set_value')){    function set_value($field = '', $default = '')    {        $field_orgin=$field;        if(strpos($field,'[')){            list($field,$item)=explode('[',str_replace(']','',$field));        }        if(isset($_GET[$field]) && ! isset($_POST[$field])){            if(isset($item) && !empty($item) && ($_GET[$field][$item])){                return form_prep($_GET[$field][$item], $field_orgin);            }            return form_prep($_GET[$field], $field_orgin);        }        if (isset($_POST[$field])){            if(isset($item) && !empty($item) && ($_POST[$field][$item])){                return form_prep($_POST[$field][$item], $field_orgin);            }            return form_prep($_POST[$field], $field_orgin);        }        if (FALSE !== ($OBJ =& _get_validation_object())){            return form_prep($OBJ->set_value($field_orgin, $default), $field_orgin);        }        return form_prep($default, $field_orgin);    }}