What are the best practices for understanding and analyzing PHP code line by line?

When understanding and analyzing PHP code line by line, it is important to start by identifying the purpose of each line and understanding the overall flow of the code. Use tools like PHP debugging tools or IDEs with step-by-step debugging capabilities to help you analyze the code execution. Break down complex code into smaller parts and test each part individually to understand its functionality. 

// Example PHP code snippet for analyzing code line by line
$variable1 = 10;
$variable2 = 20;

$result = $variable1 + $variable2; // Add two variables

echo $result; // Output the result

Keywords

debugging code analysis PHP functions syntax errors code optimization

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