What are the best practices for efficiently concatenating strings with array values in PHP?

When concatenating strings with array values in PHP, the best practice is to use the implode() function to join the array values into a single string. This function takes an array as the first argument and a separator as the second argument, which will be inserted between each value in the resulting string.

// Example of efficiently concatenating strings with array values in PHP
$array = ["apple", "banana", "cherry"];
$separator = ", ";
$result = implode($separator, $array);
echo $result; // Output: apple, banana, cherry