06c06-1.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 30 行

<?php
// Define a function that will increment a variable by 2, and returns a 
//  copy of the new value.  Similar to the ++ operator, but going by 2
//  at a time.
function add2(&$number) {
    $number += 2;
    return $number;
}

// Use this to add 2 to a number, storing the output.
$mynum = 5;
$output = add2($mynum);

// Now add one to the $output variable and echo out the values:
//   output = 8, mynum = 7
$output++;
echo "<p>output = {$output}, mynum = {$mynum}</p>\n";

// Define a function that will initialize a 10 by 10 array, and
//  return a reference to it:
function &initialize() {
    $new = array_fill(0, 10, array_fill(0, 10, 0));
    return $new;
}

// Initialize a new array with this, and echo it out:
$newarray =& initialize();
echo '<pre>', print_r($newarray, true), '</pre>';
?>