Stash::not_empty PHP Method

    public function not_empty($string = NULL)
    {
        /* Sample use
           ---------------------------------------------------------
           Check a native stash variable, global variable or snippet is not empty:
           {if {exp:stash:not_empty type="snippet" name="title"} }
               Yes! {title} is not empty
           {/if}
           
           Check any string or variable is not empty even if it's not been Stashed:
           {if {exp:stash:not_empty:string}{my_string}{/exp:stash:not_empty:string} }
               Yes! {my_string} is not empty
           {/if}
           --------------------------------------------------------- */
        if (!is_null($string)) {
            $test = $string;
        } elseif ($this->EE->TMPL->tagdata) {
            // parse any vars in the string we're testing
            $this->_parse_sub_template(FALSE, TRUE);
            $test = $this->EE->TMPL->tagdata;
        } else {
            $test = $this->_run_tag('get', array('name', 'type', 'scope', 'context'));
        }
        $value = str_replace(array("\t", "\n", "\r", "", "\v"), '', trim($test));
        return empty($value) ? 0 : 1;
    }