未定义的索引通知会停止脚本

Question

Ok guys this is my code:

if (!is_array($html_strings[$form_name])) {$html_strings[$form_name] = array();}
        array_push($html_strings[$form_name], "<input type='checkbox' ".
                                                " name='" . $result{"formdir"} . "_" . $result{"form_id"} . "'".
                                                " id='" . $result{"formdir"} . "_" . $result{"form_id"} . "'".
                                                " value='" . $result{"encounter"} . "'" .
                                                " class='encounter_form' ".
                                                ">" . xl_form_title($result{"form_name"}) . "<br>
");

and I am getting the following notice "Notice: Undefined index: Nota de Consulta"

Any help on fixing this issue?

Answer 1

$html_strings['Nota de Consulta'] seems to be not defined yet, so you can't use is_array on it.

You can check if $html_strings[$form_name] exists, before checking it for being an array:

if (!isset($html_strings[$form_name]) || !is_array($html_strings[$form_name])) {
    $html_strings[$form_name] = array();
}