What are the potential pitfalls of passing and manipulating variables within the same PHP script?

Passing and manipulating variables within the same PHP script can lead to confusion and make the code harder to maintain. To avoid this, it's recommended to separate the logic for passing variables and manipulating them into different functions or sections of the script. This will help improve code readability and organization. 

// Separate the logic for passing variables and manipulating them into different functions or sections of the script

// Define a function to pass variables
function passVariables($var1, $var2) {
    // Do something with the variables
    return $var1 + $var2;
}

// Define a function to manipulate variables
function manipulateVariables($var) {
    // Do something with the variable
    return $var * 2;
}

// Example usage
$var1 = 10;
$var2 = 20;

$sum = passVariables($var1, $var2);
$result = manipulateVariables($sum);

echo $result;

Keywords

variable scope global variables variable manipulation function parameters variable naming conventions

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