How can PHP developers ensure that their scripts comply with forum rules and guidelines when implementing automated link execution?

To ensure that PHP scripts comply with forum rules and guidelines when implementing automated link execution, developers can create a function that checks the links against a list of approved domains before allowing them to be executed. This way, only links from approved sources will be processed, reducing the risk of malicious links being executed. 

function executeLink($url) {
    $approvedDomains = array("example.com", "forum.com");

    $parsedUrl = parse_url($url);
    $domain = $parsedUrl['host'];

    if (in_array($domain, $approvedDomains)) {
        // Execute the link
        // Your code to execute the link goes here
    } else {
        // Link not from approved domain, do not execute
        echo "Link not allowed to be executed";
    }
}

// Example usage
$link = "http://example.com/page";
executeLink($link);

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