What best practices should be followed when naming variables in PHP to avoid confusion and improve code readability?

When naming variables in PHP, it is important to follow certain best practices to avoid confusion and improve code readability. Some key guidelines include using descriptive names that clearly indicate the purpose of the variable, using camelCase or snake_case for multi-word variable names, avoiding abbreviations or acronyms that may not be clear to others, and being consistent with naming conventions throughout your codebase.

// Example of using descriptive variable names in PHP
$userName = "John Doe";
$userAge = 30;
$userEmail = "john.doe@example.com";