Can using underscores at the beginning of variables impact the readability and maintainability of PHP code?

Using underscores at the beginning of variables in PHP can impact readability and maintainability of the code as it is not a common convention in PHP programming. It can make the code harder to understand for other developers and may lead to confusion. To improve readability, it is recommended to follow standard naming conventions such as using camelCase for variable names.

// Incorrect usage of underscores at the beginning of variables
$_variable = 'example';

// Corrected version using camelCase
$variable = 'example';