<?php
header("Content-type: application/json");
// if(!isset($_POST['post']) or empty($_POST['post'])) return;
//$_POST['post'] = "https://phppot.com/php/extract-content-using-php-and-preview-like-facebook/";
$urlPattern = "/(http|https)?(:\/\/)?([a-zA-Z0-9]\.)?[A-Za-z]+\.[\/a-zA-Z0-9-_=\?]+/m";
$link = preg_match($urlPattern, $_POST['post'], $m);
$res = [
"res" => false
];
if ($link) {
$link = $m[0];
$content = @file_get_contents($link,false, stream_context_create( [
"http" => [
"follow_location" =>true,
"user_agent" => "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)"
]
]));
if (!$content) {
$res[] = "Link Preview not available";
echo json_encode($res);
exit;
}
$dom = new DOMDocument();
@$dom->loadHTML($content);
$meta = $dom->getElementsByTagName("meta");
$title = $dom->getElementsByTagName('title');
$title = $title->item(0)->nodeValue;
$img = $dom->getElementsByTagName("img");
$img = $img->item(0)->getAttribute("src");
$img = ($img and filter_var($img, FILTER_VALIDATE_URL)) ?
$img : "internet.png";
$description = "";
if ($meta) {
for ($i = 0; $i < $meta->length; $i++) {
$current = $meta->item($i);
if ($current->getAttribute("name") == "description") {
$description = $current->getAttribute("content");
break;
} else {
$description = "Page decription not available";
}
}
}
if ($title) {
$res = json_encode([
"res" => true,
"title" => $title,
"desc" => $description,
"img" => $img,
"link" => $link
]);
echo $res;
}
} else {
$res[] = "Link Preview not available";
echo json_encode($res);
exit;
}
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