What are the potential pitfalls of not updating PHP code to comply with the latest version standards and how can they be avoided?

Potential pitfalls of not updating PHP code to comply with the latest version standards include security vulnerabilities, deprecated functions causing errors, and performance issues. To avoid these pitfalls, regularly update PHP code to use the latest features and follow best practices.

// Before updating PHP code
$oldArraySyntax = array("apple", "banana", "cherry");
$oldMysqlQuery = mysql_query("SELECT * FROM table");

// After updating PHP code
$newArraySyntax = ["apple", "banana", "cherry"];
$newMysqliQuery = mysqli_query($connection, "SELECT * FROM table");