PHP Assignment by Reference

Assignment by Reference ¶

Assignment by reference is also supported, using the "$var = &$othervar;" syntax. Assignment by reference means that both variables end up pointing at the same data, and nothing is copied anywhere.

Example #1 Assigning by reference

<?php
$a = 3;$b = &$a; // $b is a reference to $a
print "$a\n"; // prints 3print "$b\n"; // prints 3
$a = 4; // change $a
print "$a\n"; // prints 4print "$b\n"; // prints 4 as well, since $b is a reference to $a, which has
              // been changed?>

 

 

Esto es comoa acceso directo a  una variable