What are some common pitfalls when embedding advertisements within content in PHP?

One common pitfall when embedding advertisements within content in PHP is not properly escaping the ad code, which can lead to syntax errors or vulnerabilities like cross-site scripting attacks. To solve this, always use functions like htmlspecialchars() to escape the ad code before embedding it into the content. 

<?php
$adCode = "<script>alert('Dangerous code!')</script>";
$escapedAdCode = htmlspecialchars($adCode);
echo "<div class='ad'>$escapedAdCode</div>";
?>

Keywords

SQL injection cross-site scripting ad blockers performance degradation ad placement.

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