How to write this crawler in php?

Question

I need to create a php script.

The idea is very simple:

When I send a link of a blogpost to this php script, then the webpage is crawled and the first image with the title page are saved on my server.

What PHP function I have to use for this crawler ?

Answer 1

Use PHP Simple HTML DOM Parser

// Create DOM from URL
$html = file_get_html('http://www.example.com/');

// Find all images
$images = array(); 
foreach($html->find('img') as $element) {
       $images[] = $element->src;
} 

Now $images array have images links of given webpage. Now you can store your desired image in database.

Answer 2

HTML Parser: HTMLSQL

Features: you can get external html file, http or ftp link and parse content.