php call function from another file class code example

Example 1: php import function from another file

File1.php :
<?php
  function first($int, $string){ //function parameters, two variables.
    return $string;  //returns the second argument passed into the function
  }
?>
  
File2.php :
<?php
  include 'File1.php';
  echo first(1,"omg lol"); //returns omg lol;
?>

Example 2: php call method from another class

$classA = new ClassA();
$name = $classA->getName();
echo $name;    //Prints John