按照RATE修改变量或数组单元的值

按照RATE修改变量或数组单元的值

<?php

/**
 * 按照RATE修改变量或数组单元的值
*
 * @author yearnfar
*/

define('RATE', 0.5);

function affectNumber(&$number1, &$number2=0, &$number3=0, &$number4=0, &$number5=0)
{
$count = func_num_args();
if ($count<1 || $count>5) {
exit("param error!");
}

for ($i=1; $i<=$count; $i++) {
$varname = 'number'.$i;
$$varname = $$varname * RATE;
}
}

// 例子1
$a = 80;
$b = 90;
$c = 100;

affectNumber($a, $b, $c);

echo $a."rn";
echo $b."rn";
echo $c."rn";

function affectArray(&$arr)
{
$args = func_get_args();
if (empty($args)) {
exit("param error!");
}
array_shift($args);

foreach ($arr as $key => $value) {
if (empty($args) || in_array($key, $args)) {
$arr[$key] = $value * RATE;
}
}
}

//例子2
$arr = array(80, 90, 100);

affectArray($arr, 0, 2);

print_r($arr);