function Sum()
{
$numargs = func_num_args();
$result = 0;
for ($i = 0; $i < $numargs; $i++) {
$arg = func_get_arg($i);
if (is_numeric($arg)) {
$result += $arg;
} else {
if (get_class($arg) == "XLLoop_XLArray") {
$c = count($arg->array);
for ($j = 0; $j < $c; $j++) {
$result += Sum($arg->array[$j]);
}
}
}
}
return $result;
}
function StdDev($x)
{
foreach ($x as $val) {
$x2 = pow($val, 2);
$sumx2 += $x2;
}
if (count($x) != 0) {
$a = pow(Sum($x), 2) / count($x);
}
$b = $sumx2 - $a;
if (count($x) != 1) {
$c = $b / (count($x) - 1);
}
return pow($c, 0.5);
}
[expect php]
[file]
<?php
$a = 1;
$b = 2;
function Sum()
{
$GLOBALS["b"] = $GLOBALS["a"] + $GLOBALS["b"];
}
Sum();
echo $b;
function Average($arr)
{
$sum = Sum($arr);
$num = count($arr);
return $sum / $num;
}
function showForm($MenuItem)
{
#the table header
echo '<form action="' . THIS_PAGE . '" method="post">
<table style="width:100%">
<tr><th class="left">Quantity</th><th class="left">Biscuit</th><th class="left">Description</th><th class="right">Price Each</th><th>Extra Gravy</th><th>Meal-Size-It</th><th class="right">Totals</th><tr>
';
#MENU LIST - this part allows for a dyamic menu
$i = 0;
#i is for itteration
foreach ($MenuItem as $key => $value) {
#create the arrays that represents quantity, xtrGravy, xtrMeal
#$arr[0]=name [0]=value (number or state=checked/unchecked)
$quantity[$i][0] = "quantity" . $i;
$xtrGravy[$i][0] = "xtrGravy" . $i;
$xtrMeal[$i][0] = "xtrMeal" . $i;
#Set values - here we have to differenciate between a first presence or a post back:
if (isset($_POST['quantity' . $i])) {
#post back
$quantity[$i][1] = $_POST['quantity' . $i];
} else {
#first presence
$quantity[$i][1] = 0;
}
#end of differenciation
if (isset($_POST['xtrGravy' . $i])) {
#post back
$xtrGravy[$i][1] = "checked";
$xtrGravy[$i][2] = GRAVY_PRICE;
} else {
#first presence
$xtrGravy[$i][1] = "";
$xtrGravy[$i][2] = 0;
}
#end of differenciation
if (isset($_POST['xtrMeal' . $i])) {
#post back
$xtrMeal[$i][1] = "checked";
$xtrMeal[$i][2] = MEAL_UPGRADE;
} else {
#first presence
$xtrMeal[$i][1] = "";
$xtrMeal[$i][2] = 0;
}
#end of differenciation
$menuTotal[$i] = $quantity[$i][1] * ($value->price + $xtrGravy[$i][2] + $xtrMeal[$i][2]);
echo '
<tr>
<td><input type="number" name="' . $quantity[$i][0] . '" min="0" max="99" value="' . $quantity[$i][1] . '" /></td>
<td>' . $value->name . '</td>
<td>' . $value->description . '</td>
<td class="right">' . $value->price . '</td>
<td><input type="checkbox" name="' . $xtrGravy[$i][0] . '" min="0" max="99" value=""' . $xtrGravy[$i][1] . ' />$0.50 each</td>
<td><input type="checkbox" name="' . $xtrMeal[$i][0] . '" min="0" max="99" value=""' . $xtrMeal[$i][1] . ' />$3.00 each</td>
<td class="right">' . money_format('%(#10n', $menuTotal[$i]) . '</td>
</tr>
';
$i++;
}
# for the extras we again have to differentiate between a postback and first presence
$xtraTotal = 0.0;
if (isset($_POST['cbGravy'])) {
$cbGravy = "checked";
$xtraTotal += GRAVY_PRICE;
} else {
$cbGravy = "";
}
if (isset($_POST['cbUpGrade'])) {
$cbUpGrade = "checked";
$xtraTotal += MEAL_UPGRADE;
} else {
$cbUpGrade = "";
}
#end of differentiation
#this part of the calculation is always the same
$subTotal = Sum($menuTotal) + $xtraTotal;
$tax = $subTotal * 0.1;
$total = $subTotal + $tax;
#the totals part - starting with the subtotal ending with the grand total.
echo '<tr><td colspan="5"></td><td class="right topline"><b>SubTotal:</b></td><td class="right topline">' . money_format('%(#10n', $subTotal) . '</td></tr>
<tr><td colspan="5"></td><td class="right bottomline"><b>Tax:</b></td><td class="right bottomline">' . money_format('%(#10n', $tax) . '</td></tr>
<tr><td colspan = "5"></td><td class="right doublebottomline"><b>Total:</b><td class="right doublebottomline"><b>' . money_format('%(#10n', $total) . '</b></td></tr>
';
#SUBMIT BUTTONS set submit buttons according to type of submission
if (isset($_POST['order'])) {
// buttons are hidden and thanks for order visible
$visableSubmit = "hidden";
$visableConfirm = "hidden";
$visableThankYou = "<h3>Thanks for your order.</h3>";
} elseif (isset($_POST['submit'])) {
// all buttons visible and thanks for order hidden
$visableSubmit = "";
$visableConfirm = "";
$visableThankYou = "";
$re = "Re-";
} else {
// just submit button visible
$visableSubmit = "";
$visableConfirm = "hidden";
$visableThankYou = "";
$re = "";
}
echo '
<tr><td colspan = "7"><input class="submit" type = "submit" name = "submit" value="' . $re . 'Calculate Price" style = "width:100%" ' . $visableSubmit . ' /></td></td></tr>
<tr><td colspan = "7"><input class="submit" type = "submit" name = "order" value="Confirm Order" style = "width:100%" ' . $visableConfirm . ' /></td></td></tr>
</table>
</form>
';
}
<?php
#Example #1 Using global
$a = 1;
$b = 2;
function Sum()
{
global $a, $b;
$b = $a + $b;
$a = 10;
return $b;
}
$d = Sum();
echo 'b ' . $b . "\n\n";
echo 'a ' . $a . "\n\n";
echo 'd ' . $d . "\n\n";
<?php
header('Content-Type:text/html; charset=utf-8');
/*
function Say(){
echo '<h3>我想你咯!</h3>';
}
Say();
for($i=0; $i<10; $i++)
Say();
*/
//函数的返回值
function Sum($a, $b){
return $a + $b;
}
echo Sum(13, 74);
echo '<br />PHP中函数不区分大小写';
echo sum(75, 88);
?>
<?php
function Sum($New)
{
for ($i = 1; $i <= $New; $i += 2) {
$sum += $i;
}
print $sum;
}
?>
<html>
<head>
<title>Test</title>
</head>
<body>
<?php
Sum(50);
?>
</body>
</html>
