I want to get results from my source using open library api.
But only titles are not shown. I have no idea what problems are in my code.
The title appears in web inspector, but doesn't appear in browser.
Help me! Thank you in advance
<!-- Sample ISBN Number:
9788968481819
9788966185795
9788956747019 -->
<?php
$ISBN = $_GET['barcode'];
$post_data = array(
"page" => 1,
"search_field1" => "ISBN",
"value1" => "$ISBN",
"maxCount" => 1,
"per_page" => 1,
"collection_set" => 1
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://nl.go.kr/kolisnet/openApi/open.php");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_exec($ch);
print_r($ch);
?>
<!DOCTYPE html>
<html>
<head>
<title>barcode</title>
</head>
<body>
<form action="barcode.php" method="get">
<input type="text" name="barcode" ">
<input type="submit" name="submit" value="submit">
</form>
</body>
</html>
