PassArrayByRef_test.php

<?php
//PassArrayByRef_test.php
$a=array("a","b","c");
function test(array &$p)
{
    $len=count($p);
    for($i=0;$i<$len;$i++)
    {
        $p[$i]='Ex~' . $p[$i];
    }
    echo 'in function test:<br>';
    var_dump($p);
    echo 'leave function test.<br>';
}

var_dump($a);
test($a);
var_dump($a);
echo '<hr>';

?>

 

array (size=3)
  0 => string 'a' (length=1)
  1 => string 'b' (length=1)
  2 => string 'c' (length=1)
in function test:
array (size=3)
  0 => string 'Ex~a' (length=4)
  1 => string 'Ex~b' (length=4)
  2 => string 'Ex~c' (length=4)
leave function test.
array (size=3)
  0 => string 'Ex~a' (length=4)
  1 => string 'Ex~b' (length=4)
  2 => string 'Ex~c' (length=4)