Added code to fetch open graph data

Author: shweshi

.gitignore

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+/vendor/

composer.json

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+{
+    "name": "shweshi/opengraph",
+    "description": "A Laravel package to fetch website Open Graph metadata.",
+    "type": "library",
+    "authors": [
+        {
+            "name": "Shashi Prakash Gautam",
+            "email": "contactmespg@gmail.com"
+        }
+    ],
+    "require": {},
+
+    "autoload": {
+        "psr-4": {
+            "App\\": "app/",
+            "shweshi\\OpenGraph\\": "packages/shweshi/OpenGraph/src"
+        }
+    }
+}

src/Facades/OpenGraphFacade.php

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+<?php
+
+namespace shweshi\OpenGraph\Facades;
+
+use Illuminate\Support\Facades\Facade;
+
+class OpenGraphFacade extends Facade {
+
+    protected static function getFacadeAccessor() {
+        return 'OpenGraph';
+    }
+
+}

src/OpenGraph.php

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+<?php
+
+namespace shweshi\OpenGraph;
+
+use DOMDocument;
+
+class OpenGraph {
+
+    public function fetch($url) {
+        $html = $this->curl_get_contents($url);
+
+        /**
+         * parsing starts here:
+         */
+        $doc = new DOMDocument();
+        @$doc->loadHTML($html);
+
+
+        $tags = $doc->getElementsByTagName('meta');
+        $metadata = array();
+
+        foreach ($tags as $tag) {
+            if ($tag->hasAttribute('property') && strpos($tag->getAttribute('property'), 'og:') === 0) {
+                $key = strtr(substr($tag->getAttribute('property'), 3), '-', '_');
+                $value = $tag->getAttribute('content');
+            }
+            if (!empty($key)) {
+                $metadata[$key] = $value;
+            }
+        }
+
+        return $metadata;
+    }
+
+    protected function curl_get_contents($url) {
+        $curl = curl_init($url);
+        curl_setopt($curl, CURLOPT_FAILONERROR, 1);
+        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
+        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
+        curl_setopt($curl, CURLOPT_TIMEOUT, 30);
+        curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
+        $response = curl_exec($curl);
+        curl_close($curl);
+        return $response;
+    }
+
+}

src/Providers/OpenGraphProvider.php

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+<?php
+
+namespace shweshi\OpenGraph\Providers;
+
+use Illuminate\Support\ServiceProvider;
+
+class OpenGraphProvider extends ServiceProvider {
+
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot() {
+        //
+    }
+
+    /**
+     * Register the application services.
+     *
+     * @return void
+     */
+    public function register() {
+        $this->app->bind('OpenGraph', function() {
+            return new \shweshi\OpenGraph\OpenGraph;
+        });
+    }
+
+}