What potential issues can arise when trying to extract information from a webpage with constantly changing source code in PHP?

When extracting information from a webpage with constantly changing source code in PHP, one potential issue that can arise is that the code used to extract the information may become outdated or no longer work as intended if the structure of the webpage changes. To solve this issue, you can use a web scraping library like Goutte or Simple HTML DOM Parser, which are more flexible and can adapt to changes in the webpage's source code. 

// Example using Goutte library to extract information from a webpage with changing source code
use Goutte\Client;

$client = new Client();
$crawler = $client->request('GET', 'http://example.com');

// Extract information using CSS selectors
$title = $crawler->filter('h1')->text();
echo $title;

Keywords

web scraping dynamic content DOM parsing XPath regular expressions

Related Questions