php - 使用 PHP 自动重新选择下拉选项

Question

我希望有人可以提供帮助。

我的代码在下面，我希望当用户提交表单时，他们选择的选项值保留在下拉列表的顶部。

任何帮助，将不胜感激。

<?php require_once('Connections/reps.php'); ?>
<?php function GetPercent ($amount, $total) 
{
    $count1 = $amount / $total;
    $count2 = $count1 * 100;
    $count = number_format($count2, 0);
    return $count;
}
$countdate = time();
?>
<?php

if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

$currentPage = $_SERVER["PHP_SELF"];

$maxRows_orders = 10;
$pageNum_orders = 0;
if (isset($_GET['pageNum_orders'])) {
  $pageNum_orders = $_GET['pageNum_orders'];
}
$startRow_orders = $pageNum_orders * $maxRows_orders;

mysql_select_db($database_reps, $reps);
$query_orders = "SELECT
orders.ID AS ID,
customers.`Name` AS customerName,
products.ProductName AS product,
orders.Quantity AS Quantity,
orders.SalesPrice AS SalesPrice,
orders.Price AS Price,
orders.paid AS paid,
orders.AgeOfPayment AS AgeOfPayment,
orders.orderDate AS orderDate,
products.Price AS productPrice,
staff.StaffName AS staffMember,
orders.bonus AS bonus
FROM
orders
INNER JOIN staff AS staff ON orders.staffMember = staff.ID
INNER JOIN products AS products ON orders.product = products.ID
INNER JOIN customers AS customers ON orders.customerName = customers.ID 
WHERE
1 = 1 ";

//The above where makes the where true

// The below takes the customer name from the select input and filters based on selection. Filters the order by

if (isset($_GET['customerName2']) && $_GET['customerName2'] != 'FALSE' ) 
{
$query_orders .= "AND customerName = '" .$_GET['customerName2']."' ";
}

// This makes sure the product is not false and filters

if (isset($_GET['product']) && $_GET['product'] != 'FALSE') 
{
$query_orders .= "AND product = '" .$_GET['product']."' ";
}

// The below filters hte Customer Name

if (isset($_GET['customerName'])&& $_GET['customerName'] != 'FALSE') {
$query_orders .= "ORDER BY '".$_GET['customerName']."' ";
}


echo "$query_orders <br /> <br />";

$query_limit_orders = sprintf("%s LIMIT %d, %d", $query_orders, $startRow_orders, $maxRows_orders);
$orders = mysql_query($query_limit_orders, $reps) or die(mysql_error());
$row_orders = mysql_fetch_assoc($orders);


if (isset($_GET['totalRows_orders'])) {
  $totalRows_orders = $_GET['totalRows_orders'];
} else {
  $all_orders = mysql_query($query_orders);
  $totalRows_orders = mysql_num_rows($all_orders);
}
$totalPages_orders = ceil($totalRows_orders/$maxRows_orders)-1;

$queryString_orders = "";
if (!empty($_SERVER['QUERY_STRING'])) {
  $params = explode("&", $_SERVER['QUERY_STRING']);
  $newParams = array();
  foreach ($params as $param) {
    if (stristr($param, "pageNum_orders") == false && 
        stristr($param, "totalRows_orders") == false) {
      array_push($newParams, $param);
    }
  }
  if (count($newParams) != 0) {
    $queryString_orders = "&" . htmlentities(implode("&", $newParams));
  }
}
$queryString_orders = sprintf("&totalRows_orders=%d%s", $totalRows_orders, $queryString_orders);

$paid = $row_orders['paid'];

mysql_select_db($database_reps, $reps);
$query_customers = "SELECT Name, ID FROM customers WHERE Status = 'Active'";
$customers = mysql_query($query_customers, $reps) or die(mysql_error());
$row_customers = mysql_fetch_assoc($customers);
$totalRows_customers = mysql_num_rows($customers);

mysql_select_db($database_reps, $reps);
$query_products = "SELECT * FROM products";
$products = mysql_query($query_products, $reps) or die(mysql_error());
$row_products = mysql_fetch_assoc($products);
$totalRows_products = mysql_num_rows($products);


?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php


require_once("models/config.php");
if (!securePage($_SERVER['PHP_SELF'])){die();}
require_once("models/header.php");

?>
</head>

<body>
<div id='wrapper'>
<div id='top'>
  <div id='logo'></div>
</div>
<div id='content'>
  <div id='left-nav'>
    <?php include("left-nav.php"); ?>
  </div>
  <div id='main'> <?php echo " Hi, $loggedInUser->displayname. Here is where you will be able to view orders from a managers perspective. " ?>
  <div id = "filtertable">
<FORM METHOD="GET" ACTION="<?php   ?>">
  <table border="10" cellpadding="5" cellspacing="5">
  <tr>
      <td align="center">Order By</td>
      <td> <select name="customerName">
<option value="FALSE">Select how to Order By</option>
<option value="ID">Order ID</option>
<option value="customerName">Customer Name</option>
<option value="product">Product</option>
<option value="orderDate">Order Date</option>
<option value="paid">Paid?</option>
</select></td>
    </tr>
    <tr>
      <td align="center">Customer Name</td>
            <td><select name="customerName2">
               <option value="FALSE" >Select the Customer Name</option>
                 <?php 
do {  
?>
              <option value="<?php echo $row_customers['ID']?>" ><?php echo $row_customers['Name'];?></option>
              <?php
} while ($row_customers = mysql_fetch_assoc($customers));
?>
            </select></td>
    </tr>
    <td align="center">Product</td>
    <td><select name="product">
  <option value="FALSE" >Select a Product</option>
        <?php 
do {  
?>
      <option value="<?php echo $row_products['ID']?>" >
      <?php echo $row_products['ProductName']?>
      </option>
      <?php
} while ($row_products = mysql_fetch_assoc($products));
?>
    </select></td>
  </tr>
    <td align="center">Order Date</td>
    <td><input type="text" name="email" value="" size="25" /></td>
  </tr>
    <td align="center">Paid?</td>
    <td><input type="text" name="email" value="" size="25" />
 </td>
  </tr>

    <td colspan="2" align="center">
<INPUT TYPE="SUBMIT" VALUE="Submit Filter" NAME="B1" />    </td>
    </tr>
  </table>
  <P>&nbsp;</P>
</FORM>

  </div>


    <div id ="orderstable">
      <table border="10" cellpadding="5" cellspacing="5">
        <tr>
          <th>Order ID</th>
          <th>Customer Name</th>
          <th>Product</th>
          <th>Quantity</th>
          <th>Sales Price (€)</th>
          <th>Total Sale (€)</th>
          <th>List Price (€)</th>
          <th>Price Difference (€)</th>
          <th>% Difference</th>
          <th>Sold By</th>
          <th>Order Date</th>
          <th>Age of Payment</th>
          <th>Paid?</th>
          <th>Bonus %</th>
          <th>Bonus Amount (€)</th>
        </tr>
        <?php do { ?>
          <tr>
            <td align="center" valign="middle"><?php echo $row_orders['ID']; ?></td>
            <td align="center" valign="middle"><?php echo $row_orders['customerName']; ?></td>
            <td align="center" valign="middle"><?php echo $row_orders['product']; ?></td>
            <td align="center" valign="middle"><?php echo $row_orders['Quantity']; ?></td>
            <td align="center" valign="middle"><?php echo "€"; echo number_format($row_orders['SalesPrice'], 2); ?></td>
            <td align="center" valign="middle"><?php $first_multiply = $row_orders['Quantity'];
                                               $second_multiply = $row_orders['SalesPrice'];
                                               $multiply_total = $first_multiply *  $second_multiply;
                                               echo "€"; echo number_format(($multiply_total) , 2); ?></td>
            <td align="center" valign="middle"><?php echo "€"; echo number_format($row_orders['Price'] ,2); ?></td>
            <td align="center" valign="middle"><?php echo "€"; $first_number = $row_orders['Price']; 
                                                $second_number = $row_orders['SalesPrice'];
                                                $sum_total = $second_number - $first_number;
                                                echo number_format(($sum_total) ,2); ?></td>
            <td align="center" valign="middle"><?php $percent = GetPercent($sum_total, $row_orders['Price']);
            echo $percent."%"; ?></td>
            <td align="center" valign="middle"><?php echo $row_orders['staffMember']; ?></td>
            <td align="center" valign="middle"><?php echo date('d/m/Y', $row_orders['orderDate']); ?></td>
            <td align="center" valign="middle"><?php 
      $currentorderdate = $countdate - $row_orders['orderDate'];
      $age = ($currentorderdate / 86400);
      $ageoforder = round($age, 0);
      echo $ageoforder;
      ?> day(s)</td>
            <td align="center" valign="middle"><?php 
            if ($row_orders['paid'] == Yes) {
                echo $row_orders['paid'];
            } else {
                echo "No";
            }
            ?></td>
            <td align="center" valign="middle"><?php 
            echo $row_orders['bonus']; ?>%</td>
            <td align="center" valign="middle"><?php
            $bonustotal = (($multiply_total/100) * ($row_orders['bonus']));
        if ($percent > 0 && $ageoforder-1 < 90 ) {
         echo "€"; echo number_format($bonustotal ,2);
        } else {
          echo "€"; echo 0;
        }
      ?></td>
          </tr>
          <?php } while ($row_orders = mysql_fetch_assoc($orders));?>
      </table>
<table border="0">
  <tr>
    <td><?php if ($pageNum_orders > 0) { // Show if not first page ?>
        <a href="<?php printf("%s?pageNum_orders=%d%s", $currentPage, 0, $queryString_orders); ?>">First</a>
        <?php } // Show if not first page ?></td>
    <td><?php if ($pageNum_orders > 0) { // Show if not first page ?>
        <a href="<?php printf("%s?pageNum_orders=%d%s", $currentPage, max(0, $pageNum_orders - 1), $queryString_orders); ?>">Previous</a>
        <?php } // Show if not first page ?></td>
    <td><?php if ($pageNum_orders < $totalPages_orders) { // Show if not last page ?>
        <a href="<?php printf("%s?pageNum_orders=%d%s", $currentPage, min($totalPages_orders, $pageNum_orders + 1), $queryString_orders); ?>">Next</a>
        <?php } // Show if not last page ?></td>
    <td><?php if ($pageNum_orders < $totalPages_orders) { // Show if not last page ?>
        <a href="<?php printf("%s?pageNum_orders=%d%s", $currentPage, $totalPages_orders, $queryString_orders); ?>">Last</a>
        <?php } // Show if not last page ?></td>
  </tr>
</table>
    </div>
  </div>
 <div id ="bottompart">
  <div id='bottom'></div>
</div>
</div>
</div>
</body>
</html><?php
mysql_free_result($orders);

mysql_free_result($staff);

mysql_free_result($products);
?>

score 0 · Accepted Answer

我认为您想在选择列表中显示用户的选定值，而不是使用if条件来回显selected

<?php
   $dynamic_val = /* Save the value if you call from db, or by using $_POST */;
?>
<select>
   <option value="1" <?php echo sel_opt(1, $dynamic_val); ?>></option>
   <option value="2" <?php echo sel_opt(2, $dynamic_val); ?>></option>
   <option value="3" <?php echo sel_opt(3, $dynamic_val); ?>></option>
</select>

<?php
   function sel_opt($opt, $val) {
     if($opt == $val) {
       return 'selected';
     }
   }
?>

这不会将选项从字面上移到列表的顶部，而是会选择用户选择的选项

score 0 · Accepted Answer

你可以在里面添加这个

<option value="FALSE" <?php echo isSelected("FALSE"); ?>>Select how to Order By</option>
<option value="ID" <?php echo isSelected("ID"); ?>>Order ID</option>
//so on....

function isSelected($term) {
   if(isset($_GET['customerName']) && $term == $_GET['customerName']) {
       return 'selected="selected"';
   }
}

php - 使用 PHP 自动重新选择下拉选项

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