I am trying to search and get youtube video on my webpage - php

Question

I am trying to search and get youtube videos on my webpage. but have some error want your help what to do know.
HTML code is:
<h2>Search Videos by keyword using YouTube Data API V3</h2>
<div class="search-form-container">
<form id="keywordForm" method="post" action="">
<div class="input-row">
Search Keyword : <input class="input-field" type="search"
id="keyword" name="keyword"
placeholder="Enter Search Keyword">
</div>
<input class="btn-submit" type="submit" name="submit"
value="Search">
</form>
</div>
Now moving to the PHP code where I used iframe for the video title and use my own created API from the developer account. But when I run the code I get an error about MAX_RESULT.
and the PHP code and youtube API is here:
<?php
if (isset($_POST['submit']) )
{
$keyword = $_POST['keyword'];
if (empty($keyword))
{
$response = array(
"type" => "error",
"message" => "Please enter the keyword."
);
}
}
?>
<?php
if(!empty($response)) {
?>
<div class="response <?php echo $response["type"]; ?>
">
<?php echo $response["message"]; ?>
</div>
<?php
}
?>
<?php
if (isset($_POST['submit']) )
{
if (!empty($keyword))
{
$apikey = 'AIzaSyAjowKxG2mRdr7p1N-3RtBd-BWAgjbf87g';
$googleApiUrl = 'https://www.googleapis.com/youtube/v3/search?part=snippet&q=' . $keyword . '&maxResults=' . MAX_RESULTS . '&key=' . $apikey;
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $googleApiUrl);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$response = curl_exec($ch);
curl_close($ch);
$data = json_decode($response);
$value = json_decode(json_encode($data), true);
?>
<div class="result-heading">About <?php echo MAX_RESULTS; ?> Results</div>
<div class="videos-data-container" id="SearchResultsDiv">
<?php
for ($i = 0; $i < MAX_RESULTS; $i++) {
$videoId = $value['items'][$i]['id']['videoId'];
$title = $value['items'][$i]['snippet']['title'];
$description = $value['items'][$i]['snippet']['description'];
?>
<div class="video-tile">
<div class="videoDiv">
<iframe id="iframe" style="width:100%;height:100%" src="//www.youtube.com/embed/<?php echo $videoId; ?>"
data-autoplay-src="//www.youtube.com/embed/<?php echo $videoId; ?>?autoplay=1"></iframe>
</div>
<div class="videoInfo">
<div class="videoTitle"><b><?php echo $title; ?></b></div>
<div class="videoDesc"><?php echo $description; ?></div>
</div>
</div>
<?php
}
}
}
?>
Edit:
Error message (copied from the comments):
Notice: Use of undefined constant MAX_RESULTS - assumed 'MAX_RESULTS' in C:\xampp\htdocs\php\youtube\youtubeVideoAPI.php on line 48 . On my text editor line, 48 code is $googleApiUrl = 'googleapis.com/youtube/v3/search?part=snippet&q=' . $keyword . '&maxResults=' . MAX_RESULTS . '&key=' . $apikey;

Answer 1

Check, if you have defined the MAX_RESULTS constant in your code.
If you want to define a constant, you can do it this way:
define('MAX_RESULTS', 1); // I don't know, what value you need, so you can the 1 for anything you want