Get title with youtube api

hey i am stuck, what i am trying to do here is, have a user submit a youtube url, then when it gets posted into the database it would grab the title of the video from the video id and post the title in the database.

here -

<?php


require_once "../../maincore.php";
require_once THEMES."templates/header.php"; 

if (file_exists(INFUSIONS."video_infusions/locale/".$settings['locale'].".php")) {
	include INFUSIONS."video_infusions/locale/".$settings['locale'].".php";
} else {
	include INFUSIONS."video_infusions/locale/English.php";
}

add_to_title(" - ".$locale['300a']);

global $userdata;



function youtube($y) {
	if (strpos($y, "user") != 0) {
	$y1 = substr($y, -11); 
	return $y1;} else {
	$y2 = strpos($y, "v=");
	$y2 = substr($y, $y2+2, 11); return $y2; }
	
}

$result = dbquery("SELECT * FROM ".$db_prefix."video_cats");
if (dbrows($result) != 0) {

	if (isset($_POST['save_video'])) {
		$url = "http://gdata.youtube.com/feeds/api/videos/".$video_url."";
    	$doc = new DOMDocument;
    	$doc->load($url);
		$video_title = $doc->getElementsByTagName("title")->item(0)->nodeValue;
		$video_cat = stripinput($_POST['video_cat']);
		$video_description = addslash($_POST['video_description']);
		$video_url = youtube(stripinput($_POST['video_url']));
		$video_type = "1";
		$vk_img = "";
		$user_id = $userdata['user_id'];
		$result = dbquery("INSERT INTO ".$db_prefix."videos (video_user, video_title, video_description, video_url, video_cat, video_type, video_datestamp, video_count, video_image) VALUES ('".$user_id."', '".$video_title."', '".$video_description."', '".$video_url."', '".$video_cat."', '1', '".time()."', '0', '".$vk_img."' )");	
		redirect("../?c=$video_cat");
    	

	}

		$video_url = "";
		$formaction = FUSION_SELF;
		;

	$editlist = ""; $sel = "";
	$result2 = dbquery("SELECT * FROM ".$db_prefix."video_cats ORDER BY video_cat_name");
	if (dbrows($result2) != 0) {
		while ($data2 = dbarray($result2)) {
			$editlist .= "<option value='".$data2['video_cat_id']."'$sel>".$data2['video_cat_name']."</option>\n";
		}
	}
	
	opentable("");
echo "
<form name='inputform' method='post' action='$formaction'>
<table widht='100%' align='center'>
<tr>
<td width='120' class='tbl'></td>
<td ><p align='center' style='font-size:16px; float:left; color:#151515'><b>".$locale['452']."</b></p></td>
</tr>

<tr>     
<td width='120'>".$locale['482']."</td>
<td><input type='text' class=\"textbox\" name='video_url' value=\"http://www.youtube.com/watch?v=uBnJmlg-x48...\"  onblur=\"if(this.value=='') this.value='http://www.youtube.com/watch?v=uBnJmlg-x48...';\" onfocus=\"if(this.value=='http://www.youtube.com/watch?v=uBnJmlg-x48...') this.value='';\" style='width:100%; margin:5px 0'></td>
</tr>
<tr>
<td align='center' colspan='2' class='tbl'>";
	echo "<input type='submit' name='save_video' value='".$locale['471']."' class='button' style='width:120px;margin-top:6px;'></td>
</tr>
</table>
</form>";
closetable();

}

require_once THEMES."templates/footer.php";
?>

Code (markup):

thanks

 

please help? thanks

 

Youtube API returns XML responses not DOM , so make use of the following :

<?php
    $url = 'http://gdata.youtube.com/feeds/api/videos/';
    
    $data = file_get_contents($url);
    $xml = new SimpleXMLElement($data);
    
    foreach($xml->entry as $key => $value)
    {
        echo $value->title.'<br />';
    }
?>

PHP: