PHPFontToBack/functions.php at main · MilanBhanuka/PHPFontToBack · GitHub

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<?php
      #Function - Block of code that can be repeatedly called

      /*
            Camel Case - myFunction()
            Lower Case - my_function()
            Pascal Case - MyFunction()
      */

      // Create Simple Function
      function simpleFunction(){
            echo 'Hello World';
      }

      // Run Simple Function
      // simpleFunction();

      // Function With Param
      function sayHello($name = 'World'){
            echo "Hello $name<br>";
      }

      // sayHello("Joe");
      // sayHello("Bob");
      // sayHello("Tim");


      //Return Value
      function addNumbers($num1, $num2){
            return $num1 + $num2;
      }

      // echo addNumbers(2,3);


      //By Reference
      $myNum = 10;

      function addFive($num){
            $num += 5;
      }

      function addTen($num){
            $num += 10;
      }
      addFive($myNum);

      echo "Value: $myNum<br>";

      addTen($myNum);

      echo "Value : $myNum<br>";
?>