What potential issues can arise from not properly checking for empty variables in PHP?

Potential issues that can arise from not properly checking for empty variables in PHP include unexpected behavior, errors, and security vulnerabilities. To solve this issue, you should always check if a variable is empty before using it to avoid these potential problems.

// Check if the variable is empty before using it
if(!empty($variable)){
    // Perform actions with the variable
    // ...
} else {
    // Handle the case when the variable is empty
    // ...
}