How to check the presence of words on the site?

Question

PHP

There is a list of excel sites, you need to check the presence on the site (you can only analyze the main one) 1 or 2 words.
Previously visited the site ctrl+F. He wrote the right word, if he found it, he left it, if not, he deleted it.
Long, but 100% can be easily automated

Answer 1

Any freelancer will write a similar parser in 5 minutes..

Answer 2

$content = file_get_contents('http://www.example.com/');
if (strpos( $content, 'строка' ) !== false) {
// тут делаешь что то 
}