What are some potential pitfalls to be aware of when working with PHP execution paths and environment variables?

One potential pitfall when working with PHP execution paths and environment variables is not properly setting or accessing these variables, which can lead to errors or security vulnerabilities. To avoid this, it is important to sanitize and validate any input related to these variables. 

// Example of setting and accessing environment variables securely
$secret_key = getenv('SECRET_KEY');
if($secret_key !== false){
    // Use the secret key safely
} else {
    // Handle error or fallback behavior
}

Keywords

PHP execution paths environment variables security vulnerabilities configuration errors

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