CODEWITHSUNDEEP
phpcurl
Tabatha
Tabatha

Reputation: 23

Check if string exists in a web page

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: 

<!-- BEGIN TEST CODE -->

If it exists in the HTML source code of a remote webpage (say, example.com) I want to echo "yes". If it doesn't exist in the source, I want it to echo "no".

This is what I've tried so far:

$ch = curl_init("http://www.example.com");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$text = curl_exec($ch);

$test = strpos($text, "<!-- BEGIN TEST CODE -->");
if ($test==false)
{
    echo "yes";
}else{
    echo "no";
}

When I run it, it always outputs "yes". What's wrong in my code, and how should I do it correctly?

Upvotes: 1

Views: 12576

Answers (2)

Edward Yu
Edward Yu

Reputation: 786

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";
}
?>

Upvotes: 8

Drakekin
Drakekin

Reputation: 1348

Have you tried using $is_a_test = strpos($the_page_text, "<!-- BEGIN TEST CODE -->");?

PHP strpos() documentation: http://www.php.net/manual/en/function.strpos.php

Upvotes: 0

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