<?php

// Declair function assigns a new value to 

// $string variable and prints it

  function return_string( &$string ) {

​

    //build return string var

    $return_the_string = $string . "- returned STRING";

​

    //modify the string var

    $string = $string . "- passed byREF";

​

    // you could print or return the string aswell

    //print( $string );

    return $return_the_string ;

  }

​

// EXAMPLE 1 ----------------------

  $string = "1-Input string ";

​

  return_string( $string ); //call function

​

  print( $string ); //print string with new text

​

# EXAMPLE 1 OUTPUT:

  # 1-Input string - passed byREF 

​

​

// EXAMPLE 2 ----------------------

  $string = "2-Input string ";

​

  $returned_string = return_string( $string ); //call function

​

  print( $string); //print string with new text

  print( $returned_string ); //print string with new text

​

  # EXAMPLE 2 OUTPUT:

    # 2-Input string - passed byREF

    # 2-Input string - returned STRING

​

?>