Check if string exists in a web page

Question

I\'m trying to use curl to detect whether a piece of text exists in the source code of a remote webpage. For example, I\'m trying to see if this string exists in the source:

Answer 1

The two functions you need are cURL and strpos().

<?php
$ch = curl_init("http://www.example.com");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$text = curl_exec($ch);
$test = strpos($text, "<!-- BEGIN TEST CODE -->");
if ($test==false)
{
    echo "no";
}
else
{
    echo "yes";
}
?>