What are the potential pitfalls of using complex variable concatenation in PHP?

When using complex variable concatenation in PHP, it can lead to difficult-to-read code and potential errors if not handled properly. To avoid these pitfalls, it's best to break down complex concatenations into smaller, more manageable parts using concatenation operators or string interpolation. 

// Example of breaking down complex concatenation into smaller parts:
$name = 'John';
$age = 30;
$city = 'New York';

// Instead of using complex concatenation:
$message = 'My name is ' . $name . ' and I am ' . $age . ' years old, living in ' . $city;

// Break it down into smaller parts:
$intro = 'My name is ' . $name . ' and I am ';
$details = $age . ' years old, living in ' . $city;
$message = $intro . $details;

Keywords

complex variable concatenation PHP string manipulation error handling performance optimization

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