How can variable naming conventions in PHP scripts impact the readability and accuracy of calculations?

Variable naming conventions in PHP scripts can impact readability and accuracy of calculations by making it difficult for developers to understand the purpose of each variable. Using clear and descriptive names can help to improve readability and reduce the likelihood of errors in calculations. By following a consistent naming convention, developers can easily identify the purpose of each variable and ensure that calculations are accurate.

// Bad variable naming convention
$a = 10;
$b = 20;
$c = $a + $b;

// Good variable naming convention
$firstNumber = 10;
$secondNumber = 20;
$sum = $firstNumber + $secondNumber;