## How to Detect URL Presence in a String Using PHP: A Comprehensive Guide

Detect URL Presence in Array Using PHP

In PHP, you can verify if a string contains a value from an array by employing specific functions.

Original Attempt:

The provided code utilizes in_array() to determine if the string directly matches an element in the array. However, this approach may return incorrect results if the string only includes a portion of the URL.

Improved Approach:

To address this issue, you can utilize the strpos() function, which searches for the first occurrence of a specified substring within a string.

<code class="php">$string = 'my domain name is website3.com';
foreach ($owned_urls as $url) {
    if (strpos($string, $url) !== FALSE) {   
        echo "Match found";
        return true;
    }
}
echo "Not found!";
return false;</code>

Case-Insensitive Detection:

If you need to check for case-insensitive matches, consider using stripos(). This function searches for a substring regardless of character case.

<code class="php">// Case-insensitive search using stripos()
if (stripos($string, $url) !== FALSE) { 
    // ...
}</code>

By implementing these modifications, you can effectively detect whether a string contains a URL from your array, regardless of its exact position or case.

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