How to find video source url with simple_html_dom in Php - php

Question

I started learning php. How can I find video source url with php. Can someone tell me how to get video url with simple_html_dom? For example how to find a video source url from a website?
Thank you

Answer 1

First of all, you need to understand how you can fetch an HTML document on a site. Everything you see in the browser consists of HTML and CSS. When you fetch a HTML document from a page with PHP, you get whatever is on the screen at that moment. So if a content is loaded into the page later using an Ajax call like below, you can't get it directly from the page.
function loadVideoURL() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.status == 200) {
document.getElementById("videosrc").innerHTML = this.responseText;
}
};
xhttp.open("GET", "get_video_url.php", true);
xhttp.send();
}
In the current situation, suppose that the video urls included in the HTML document in the first place.
First Download latest version of simplehtmldom from here. This is the PHP Class to manipulate HTML in easy way and this library requires minimum PHP 5. Create a file which name is simplehtmldomparser.php in main directory of your project and include it using code below to your main php code.
<?php
include 'simplehtmldomparser.php';
?>
This code block will load the class to your main PHP file. Now, you want to fetch video url from the page.
<?php
$html = file_get_html('http://www.videos.com/');
/* This line will fetch HTML document from the site that you wrote. */
?>
Now, you have the html document in $html variable. You need find video tags in HTML document. For example, If fetched page uses a <video> tag for videos, you can get the video urls as follows.
<?php
foreach($html->find('video') as $element){
echo $element->src . '<br>';
}
?>
Here is another example that might work for your project. For example you want to jump another video in the website, fetch all <a> tags and get their hrefs and use the $html = file_get_html($newlyfetchedanchor); again. To fetch all <a> tags from the current $html use code below.
<?php
foreach($html->find('a') as $element){
echo $element->href;
}
?>
There are more useful functions in the class and you can find here.