array to xml or xspf make xspf file for embed vlc lugin playlist

Question

i am trying input check box list current folder .mp3 get using gob function glob_grace list the audio files using check box then

get array check box values make xspf file using php

i write code all for array to xml

but small error please anyone tell me what error and the error where occurred !

<?php   
foreach (glob("*.{mp3,mp4}", GLOB_BRACE) as $filename) {
    $values = $filename ;
    echo "<form action='p.php' method='POST'>";
    echo "<input type='checkbox' name='foo[]' value='$values'>$values <hr>";    

}
    echo "<input type='submit' name='submit' value='Submit'>";
    echo "</form>";

?>

it will go to next page below

<?php
        $g = $_POST['foo'];
       $cnt = count($g);
        //function definition to convert array to xml
function array_to_xml($array, &$xml_user_info) {
    for ($i=0 ; $i < $cnt ;$i++)
    {
        $track = $xml_user_info->addChild('track');
        $track->addChild("location",$array[$i]);
     }                                       

}

//creating object of SimpleXMLElement
$xml_user_info = new SimpleXMLElement("<?xml version=\"1.0\"?><trackList></trackList>");

//function call to convert array to xml
array_to_xml($g,$xml_user_info);

//saving generated xml file
$xml_file = $xml_user_info->asXML('users.xspf');

//success and error message based on xml creation
if($xml_file){
    echo 'XML file have been generated successfully.';
}else{
    echo 'XML file generation error.';
}
?>

please give me answer solution working code

thanks in advance

Answer 1

If glob("*.{mp3,mp4}", GLOB_BRACE) returns an array with more than 1 item, you are generating the <form action='p.php' method='POST'> tag multiple times.

Maybe you could move the form declaration to outside of the foreach.

If I submit the form and I load the p.php, I get this Notice:

Notice: Undefined variable: cnt

You are using $cnt = count($g); to count the items, but you could also pass this $g and count its items inside the function array_to_xml.

I think that if you want to get the value from $_POST['foo'], you should first check if it is a POST and then check if the $_POST['foo'] is set.

Maybe this setup can help you:

<?php

//function definition to convert array to xml
function array_to_xml($array, &$xml_user_info)
{
    for ($i = 0; $i < count($array); $i++) {
        $track = $xml_user_info->addChild('track');
        $track->addChild("location", $array[$i]);
    }
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_POST['foo'])) {
        $g = $_POST['foo'];

        //creating object of SimpleXMLElement
        $xml_user_info = new SimpleXMLElement("<?xml version=\"1.0\"?><trackList></trackList>");

        //function call to convert array to xml
        array_to_xml($g, $xml_user_info);

        //saving generated xml file
        $xml_file = $xml_user_info->asXML('users.xspf');

        //success and error message based on xml creation
        if ($xml_file) {
            echo 'XML file have been generated successfully.';
        } else {
            echo 'XML file generation error.';
        }
    }
}
?>