How can PHP beginners ensure their code is compatible with PHP 7, considering changes in functions and syntax?

PHP beginners can ensure their code is compatible with PHP 7 by familiarizing themselves with the changes in functions and syntax introduced in PHP 7. They should avoid using deprecated functions and features, and instead, use the updated functions and syntax provided in PHP 7. Regularly testing their code on a PHP 7 environment or using tools like PHP Compatibility Checker can help identify any compatibility issues. 

// Example code snippet using updated syntax in PHP 7
// Using the null coalescing operator (??) instead of isset() to check if a variable is set
$name = $_GET['name'] ?? 'Guest';
echo "Hello, $name!";

Keywords

PHP 7 backward compatibility deprecated functions syntax changes error handling

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