Question

我有多个查询表格，并且有不同的字段。我想用ajax

检查我用不同形式的每个字段的验证

以下是我的示例代码：

if($name && $email && $mobile && $departuredate && $vehicle && $query){     
    ?>

  <form action="<?php echo DOMAIN; ?>contact/booking-form.php" method="post">
    <input type="hidden" name="name" value="<?php echo $name; ?>" />
    <input type="hidden" name="email" value="<?php echo $email; ?>" />

    <input type="hidden" name="mobile" value="<?php echo $mobile; ?>" />

   <?php if(isset($_POST['vehicle'])) {?>
    <input type="hidden" name="vehicle" value="<?php echo $vehicle; ?>" />
   <?php } ?>

    <input type="hidden" name="departuredate" value="<?php echo $departuredate; ?>" />
    <input type="hidden" name="query" value="<?php echo $query; ?>" />

    <input type="hidden" name="enquiry" value="<?php echo $enquiry; ?>" />
    <input type="hidden" name="page" value="<?php echo $page; ?>" />
    <input type="hidden" name="agree" value="<?php echo $agree; ?>" />

    <input type="hidden" name="submit" id="submit">

  </form>

<script>
var form = document.getElementById('submit').form;
var submit_method = document.createElement("form").submit;
submit_method.call(form);
</script>
<?php } ?>

在给定代码中，$ vehicle未修复（有时此值为空）。如何检查表格是否有车辆字段然后检查为空并继续

Answer 1

您可以在javascript中使用相同的if语句

<?php if(isset($_POST['vehicle'])) {?>
    //if the field exists write your js validation otherwise . . .
   <?php } ?>

Answer 2

列出所有字段
收集所有必填字段
验证
如果全部经过验证，则处理数据

预订-form.php的

<?php
    // Fields
    $name = $_POST['name'];
    $email = $_POST['email'];
    $mobile = $_POST['mobile'];
    $departuredate = $_POST['departuredate'];
    $vehicle = $_POST['vehicle'];
    $query = $_POST['query'];

    // other fields

    // A set of required fields
    $required_fields = array(
        $name, $email, $mobile, $departuredate, $vehicle, $query
    );

    $message = [];
    $is_ok = 1;

    // Validate
    foreach ($required_fields as $each) {
        if (empty($each)) {
            $message[] = 'Fields with (*) are required';
            $is_ok = 0;
        }
    }

    // If all validated
    if ($is_ok) {
        // process the data
    }
?>
<ul class="errors">
    <?php
        // Display errors in list
        foreach ($message as $each_msg) {
            echo "<li>$each_msg</li>";
        }
    ?>
</ul>
<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post">
    <input type="hidden" name="name" value="<?php echo $name; ?>" />
    <input type="hidden" name="email" value="<?php echo $email; ?>" />
    <input type="hidden" name="mobile" value="<?php echo $mobile; ?>" />
    <?php if (isset($_POST['vehicle'])) { ?>
        <input type="hidden" name="vehicle" value="<?php echo $vehicle; ?>" />
    <?php } ?>
    <input type="hidden" name="departuredate" value="<?php echo $departuredate; ?>" />
    <input type="hidden" name="query" value="<?php echo $query; ?>" />
    <input type="hidden" name="enquiry" value="<?php echo $enquiry; ?>" />
    <input type="hidden" name="page" value="<?php echo $page; ?>" />
    <input type="hidden" name="agree" value="<?php echo $agree; ?>" />
    <input type="hidden" name="submit" id="submit">
</form>

<script>
    var form = document.getElementById('submit').form;
    var submit_method = document.createElement("form").submit;
    submit_method.call(form);
</script>

Answer 3

嗨，你可以这样使用。

<?php

function function1() {
echo "this is function 1";
}

function function2() {
echo "this is function 2";
}

if ($page)
eval("{$page} ();");

echo "<a href='$PHP_SELF?page=function1'>Function 1</a>";
echo "<a href='$PHP_SELF?page=function2'>Function 2</a>";

?>

如何动态使用if语句php

3 个答案: