What are the best practices for passing variables like $tags and $maxlength to functions in PHP?

When passing variables like $tags and $maxlength to functions in PHP, it is best practice to define default values for these variables in the function declaration. This ensures that the function can still be called without explicitly passing these variables, while allowing for customization when needed. 

function processText($text, $tags = [], $maxlength = 100) {
    // Function logic here
}

// Calling the function without passing $tags and $maxlength
processText($text);

// Calling the function with custom $tags and $maxlength values
processText($text, ['tag1', 'tag2'], 200);

Keywords

variables functions PHP passing parameters

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