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What are some common pitfalls when using the system() function in PHP for executing commands?

One common pitfall when using the system() function in PHP is not properly sanitizing user input, which can lead to command injection vulnerabilities. To mitigate this risk, always validate and sanitize user input before passing it to the system() function. Additionally, be cautious of executing potentially dangerous commands or scripts using system() as it can pose security risks.

php 
// Sanitize user input before passing it to the system() function
$user_input = filter_var($_POST['input'], FILTER_SANITIZE_STRING);
system("command " . escapeshellarg($user_input));

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