How can PHP developers avoid errors related to case sensitivity in variable names?

PHP developers can avoid errors related to case sensitivity in variable names by being consistent in their naming conventions. It is recommended to use either all lowercase or all uppercase letters for variable names to prevent confusion. Additionally, developers can use IDEs or text editors that provide auto-completion features to help ensure consistency in variable names.

// Correct way to declare variables with consistent case
$myVariable = "Hello, World!";
$anotherVariable = 42;

echo $myVariable;
echo $anotherVariable;