Are there best practices for defining and managing variables in PHP to avoid errors and improve code readability?

When defining and managing variables in PHP, it is important to follow best practices to avoid errors and improve code readability. One common practice is to use meaningful variable names that describe the data they hold. Additionally, it is recommended to initialize variables before using them to prevent undefined variable errors. Finally, properly scoping variables within functions or classes can help avoid naming conflicts and improve code maintainability. 

// Example of defining and managing variables in PHP

// Use meaningful variable names
$userName = "John Doe";
$userAge = 30;

// Initialize variables before using them
$total = 0;
$items = [10, 20, 30];

foreach ($items as $item) {
    $total += $item;
}

echo "Total: " . $total;

Keywords

variable definition variable management error prevention code readability PHP functions

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