What are best practices for initializing and updating variables in PHP scripts?

When initializing variables in PHP scripts, it is best practice to declare them with an initial value to avoid undefined variable errors. To update variables, make sure to properly assign new values to them using assignment operators like "=" or "+=". 

// Initializing variables
$number = 10;
$string = "Hello World";

// Updating variables
$number += 5;
$string .= "!";

Keywords

variable initialization variable updating PHP scripts error handling data types

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