What are the potential pitfalls of copying and pasting code without understanding the fundamentals?

Copying and pasting code without understanding the fundamentals can lead to errors and bugs in your code. It can also hinder your ability to troubleshoot and modify the code in the future. To avoid these pitfalls, take the time to understand the code you are using and how it works before incorporating it into your project.

// Example code snippet demonstrating the importance of understanding the code before using it
// Incorrect way of copying and pasting code without understanding it
$var1 = 10;
$var2 = 20;
$result = $var1 + $var2;
echo $result;

// Correct way of understanding and using the code
$number1 = 10;
$number2 = 20;
$sum = $number1 + $number2;
echo "The sum of $number1 and $number2 is: $sum";