從下面的php + mysql表中顯示總計代碼

每當用戶執行搜索時，我想顯示總額從付費金額。我的代碼如下：從下面的php + mysql表中顯示總計代碼

<?php 
$sql = "SELECT * FROM users"; 
if(isset($_POST['search'])){ 
    $search_term = mysql_real_escape_string($_POST['search_box']); 
    $sql .= " WHERE first_name = '{$search_term}'"; 
    $sql .= " OR last_name = '{$search_term}'"; 
    $sql .= "OR month = '{$search_term}'"; 
} 
$query = mysql_query($sql) or die(mysql_error()); 
?> 
<form name="search_form" method="POST"action="displaydata.php"> 
    Search: <input type="text"name="search_box" value="" /> 
    <input type="submit" name="search"value="Search.."> 
</form> 
<table width="70%" cellpadding="5" cellspace="5"> 
    <tr><td>Student ID</td><td>First Name</td><td>Last Name</td><td>Paid Amount</td><td>Course</td><td>Month</td><td>Year</td></tr> 
    <H3>Payment Voucher</H3><?php while ($row =mysql_fetch_array($query)) {?> 
    <tr><td><?php echo $row ['student_id']; ?></td><td><?php echo $row ['first_name']; ?></td><td><?php echo $row ['amount']; ?></td><td><?php echo $row ['month']; ?></td> 
    </tr> 
<?php } ?>

來源

2016-01-04 Adam Rifau

請編輯您的問題並正確格式化您的代碼，以便我們可以閱讀您提供的內容。 –

使用mysqli而不是mysql，因爲mysql不再支持 –

你的表格是如何定義的？ –

<?php 

if(isset($_POST['search'])){ 
$search_term = mysql_real_escape_string($_POST['search_box']); 
$sql = "SELECT * FROM users WHERE first_name = '{$search_term}' OR last_name = '{$search_term}' OR month = '{$search_term}'"; 

$query = mysql_query($sql) or die(mysql_error()); 
?> 
<form name="search_form" method="POST"action="displaydata.php"> 
Search: <input type="text"name="search_box" value="" /> 
<input type="submit" name="search"value="Search.."> 
</form> 
<table width="70%" cellpadding="5" cellspace="5"> 
<tr><td>Student ID</td><td>First Name</td><td>Last Name</td><td>Paid Amount</td><td>Course</td><td>Month</td><td>Year</td></tr> 
<H3>Payment Voucher</H3><?php while ($row =mysql_fetch_array($query)) {?> 
<tr><td><?php echo $row ['student_id']; ?></td><td><?php echo $row ['first_name']; ?></td><td><?php echo $row ['amount']; ?></td><td><?php echo $row ['month']; ?></td> 
</tr> 
<?php 
} 
} 
?>

這看起來好了很多，而且更容易。但請更改爲PDO或MySQLi。 MySQL已棄用，從PHP 7開始，它已經結束了。

這怎麼查詢可以使用一下PDO：

<?php 
$conn = new PDO("mysql:host=localhost;dbname=database", 'user', 'password'); 
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
if(isset($_POST['search'])){ 
$search_term = htmlEntities($_POST['search_box'], ENT_QUOTES); 
$sql = $conn->prepare("SELECT * FROM users WHERE first_name = :search_term OR last_name = :search_term OR month = :search_term"); 
$sql->bindParam(':search_term', $search_term, PDO::PARAM_STR); 
$sql->execute(); 
?> 
<form name="search_form" method="POST"action="displaydata.php"> 
Search: <input type="text"name="search_box" value="" /> 
<input type="submit" name="search"value="Search.."> 
</form> 
<table width="70%" cellpadding="5" cellspace="5"> 
<tr><td>Student ID</td><td>First Name</td><td>Last Name</td><td>Paid Amount</td><td>Course</td><td>Month</td><td>Year</td></tr> 
<H3>Payment Voucher</H3> 
<?php while ($row = $sql->fetch(PDO::FETCH_ASSOC)) {?> 
<tr><td><?php echo $row ['student_id']; ?></td><td><?php echo $row ['first_name']; ?></td><td><?php echo $row ['amount']; ?></td><td><?php echo $row ['month']; ?></td> 
</tr> 
<?php 
} 
} 
?>

希望這可以幫助你！

來源

2016-01-04 14:38:30

從下面的php + mysql表中顯示總計代碼

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