Are there any specific best practices to keep in mind when working with PHP?

Issue: When working with PHP, it is important to follow best practices to ensure clean, efficient, and secure code. Some key best practices include using proper naming conventions, avoiding global variables, sanitizing user input to prevent security vulnerabilities, and organizing code into reusable functions or classes. Code snippet: 

// Example of using proper naming conventions
$variableName = "example";

// Example of avoiding global variables
function exampleFunction() {
    $localVariable = "local";
    return $localVariable;
}

// Example of sanitizing user input
$userInput = $_POST['input'];
$cleanInput = htmlspecialchars($userInput);

// Example of organizing code into reusable functions
function add($num1, $num2) {
    return $num1 + $num2;
}

Keywords

security performance error handling database code optimization

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