How can using semicolons and spaces in PHP code affect its functionality and maintainability?

Using semicolons and spaces properly in PHP code is crucial for both functionality and maintainability. Semicolons are used to terminate statements in PHP, so omitting them can lead to syntax errors. Proper spacing improves code readability and makes it easier to understand and maintain. By following PHP coding standards and conventions for semicolons and spacing, you can ensure your code works correctly and is easy to maintain.

// Incorrect usage of semicolons and spacing
$variable=5
echo$variable;

// Corrected code with proper semicolons and spacing
$variable = 5;
echo $variable;