What are the potential drawbacks of using short variable names like $a in PHP code?

Using short variable names like $a can make the code less readable and maintainable, as it may be unclear what the variable represents without additional context. To solve this issue, it is recommended to use descriptive variable names that clearly indicate the purpose of the variable. 

// Bad example using short variable names
$a = 10;
$b = 20;
$result = $a + $b;

// Good example using descriptive variable names
$firstNumber = 10;
$secondNumber = 20;
$sum = $firstNumber + $secondNumber;

Keywords

variable names readability maintainability debugging coding standards

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