What is the significance of using trim() and array_map() when working with PHP variables for Google Maps API?

Using trim() helps remove any leading or trailing whitespace from a string, which can be important when working with user input that may contain extra spaces. Array_map() can be used to apply a function to each element of an array, which can be useful for sanitizing or formatting multiple values at once. When working with PHP variables for Google Maps API, using trim() and array_map() can help ensure that the data being passed to the API is clean and properly formatted. 

// Example code snippet using trim() and array_map() for Google Maps API variables
$address = " 123 Main Street ";
$city = " New York ";
$state = " NY ";

// Trim whitespace from variables
$address = trim($address);
$city = trim($city);
$state = trim($state);

// Create an array of variables
$variables = array($address, $city, $state);

// Apply trim() to each element of the array
$cleaned_variables = array_map('trim', $variables);

// Now $cleaned_variables contains sanitized values ready for use with Google Maps API

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