How can browser compatibility issues affect the execution of PHP code?

Browser compatibility issues can affect the execution of PHP code if the PHP code generates HTML or JavaScript that is not supported by certain browsers. To solve this issue, it is important to ensure that the PHP code generates standard-compliant HTML and JavaScript that is supported by all major browsers. This can be achieved by testing the code on different browsers and making necessary adjustments to ensure cross-browser compatibility.

<?php
// Example of generating standard-compliant HTML using PHP
echo "<div>Hello World!</div>";
?>