[英]Total result for PHP
我有一個使用復選框構建的表單,但無法計算其總結果。 如果用戶選擇三個復選框,則我希望獲得總計,如果一個復選框然后為$ 1,則總計為$ 3。 我被卡住了,因為我無法進行計算。
<html
<head>
<title>Order</title>
</head>
<body>
<link rel= "stylesheet" href= "order.css">
<form action="complete.php" method="post">
<form name="order">
<fieldset><legend>Complete Order:</legend>
<h1> Choose Design </h1>
<p><label>Your Name: <input type="text" name="name"></label>
<label>Address: <input type="text" name="address"></label>
<label>Credit Card #: <input type="text" name="creditcard"></label>
<label>Date: <input type="date" id="datepicker" name='date' size='9' value="" > </label>
<br><label> Design Types: <img src="1.jpg"><input type="checkbox" name="1"></label> $1.00
<label><img src="2.jpg"><input type="checkbox" name="2"> </label>$1.00
<label><img src="3.jpg"><input type="checkbox" name="3"> </label>$1.00
<br></p>
<input type="submit" value="Submit Order">
</form>
</body>
</html>
郵遞區號
<html>
<head>
<title>Form Feedback</title>
</head>
<body>
<?php
if ( !empty($_POST['name']) && !empty($_POST['address']) && !empty($_POST['creditcard']) ) {
echo "<p>Thank you, <strong>{$_POST['name']}</strong>, for placing the order.
<p>Your item will be shipped to:
<tt>{$_POST['address']}</tt></p>
<p>Following credit card has been charged: <em>{$_POST['creditcard']}</em>.</p>\n";
} else { //Missing form value.
echo '<p>Please go back and fill out the form again.</p>';
}
?>
</body>
</html>
HTML的變化:
<label><img src="1.jpg"><input type="checkbox" name="fieldname[]" value="1"></label> $1.00
<label><img src="2.jpg"><input type="checkbox" name="fieldname[]" value="1"> </label>$1.00
<label><img src="3.jpg"><input type="checkbox" name="fieldname[]" value="1"> </label>$1.00
PHP代碼:它將計算所選復選框的數量-
<?php
if(isset($_POST['fieldname']) && !empty($_POST['fieldname'])){
echo count($_POST['fieldname']); //count the number of selected checkbox
echo array_sum($_POST['fieldname']); //sum of selected checkbox values
}
?>
首先,它與復選框的名稱有關。 如果它們是一組值(例如,產品),則使用通用名稱作為數組:
<input type="checkbox" name="product[]" />
<input type="checkbox" name="product[]" />
<input type="checkbox" name="product[]" />
第二個問題,您的復選框不應該有一個值嗎,或者始終為1.00美元?
它將始終為$ 1.00,只需計算一下:
$value = isset($_POST['product']) ? count($_POST['product']) : 0;
如果應該有一個值:
<input type="checkbox" name="product[]" value="1.00" />
<input type="checkbox" name="product[]" value="1.50" />
<input type="checkbox" name="product[]" value="2.00" />
可以使用array_sum函數:
$value = isset($_POST['product']) ? array_sum($_POST['product']) : 0;
使用isset($_POST['checkboxName'])
檢查是否已選中該復選框,然后為每個復選框添加1:
$check_value = 0;
$check_value += isset($_POST['1']) ? 1 : 0;
$check_value += isset($_POST['2']) ? 1 : 0;
$check_value += isset($_POST['3']) ? 1 : 0;
更改php部分:
<?php
if ( !empty($_POST['name']) && !empty($_POST['address']) && !empty($_POST['creditcard']) ) {
$cost = 0;
if(isset($_POST['1'])) $cost += 1;
if(isset($_POST['2'])) $cost += 1;
if(isset($_POST['3'])) $cost += 1;
echo "<p>Thank you, <strong>{$_POST['name']}</strong>, for placing the order.
<p>Your item will be shipped to:
<tt>{$_POST['address']}</tt></p>
<p>Following credit card has been charged: <em>{$_POST['creditcard']}</em>.</p>
<p>With amount: <em>{$cost}</em>.</p>\n";
} else { //Missing form value.
echo '<p>Please go back and fill out the form again.</p>';
}
?>
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