Question

我有一个表单评论页面可以很好地调用：

echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>{$_REQUEST['CustomerName']}</div>";
echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Email:</span>{$_REQUEST['CustomerEmail']}</div>";
echo "<div class='reviewItem'><span class='reviewTitle'>Customer Phone:</span>{$_REQUEST['CustomerPhone']}</div>";
echo "<div class='reviewItem'><span class='reviewTitle'>Customer Address:</span>{$_REQUEST['CustomerAddress']}</div>";

问题是我有很多字段没有填写。我想在echo之前放一个“if”语句来检查它是否有数据。如果没有，则不显示任何内容。我是PHP的新手，所以我不确定我是否可以调用类似的东西：

if (length > 0)echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Email:</span>{$_REQUEST['CustomerEmail']}</div>";

提前感谢您的帮助。干杯。

Answer 1

echo (!empty($_REQUEST['CustomerName'])) ? "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>  {$_REQUEST['CustomerName']}</div>" : "";
echo (!empty($_REQUEST['CustomerEmail'])) ? "<div class='reviewItem'><span class='reviewTitle'>Cusomer Email:</span>{$_REQUEST['CustomerEmail']}</div>" : "";
echo (!empty($_REQUEST['CustomerPhone'])) ? "<div class='reviewItem'><span class='reviewTitle'>Customer Phone:</span>{$_REQUEST['CustomerPhone']}</div>" :"";
echo (!empty($_REQUEST['CustomerAddress'])) ? "<div class='reviewItem'><span class='reviewTitle'>Customer Address:</span>{$_REQUEST['CustomerAddress']}</div>" : "";

试试。

Answer 2

尝试

if (isset($_REQUEST['CustomerName']))
    echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>{$_REQUEST['CustomerName']}</div>";

或

if (isset($_REQUEST['CustomerName']) && $_REQUEST['CustomerName'])
    echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>{$_REQUEST['CustomerName']}</div>";

Answer 3

你刚刚得到它。试试这个：

if(isset($_REQUEST['CustomerName']}))
     echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>{$_REQUEST['CustomerName']}</div>";

PHP的isset检查引用的变量是否分配了值 - 如果是，则回显它。

Answer 4

我通常这样写，它测试var的设置而不是空白：

<?php
if(isset($_REQUEST['CustomerName']) && $_REQUEST['CustomerName']!=''){
 echo "<div class='reviewItem'><span class='reviewTitle'>Customer Name:</span>{$_REQUEST['CustomerName']}</div>";
}
?>

Answer 5

你是说这个？

if($_REQUEST['CustomerName']):
    echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>{$_REQUEST['CustomerName']}</div>";
endif;
if($_REQUEST['CustomerEmail']):
    echo "<div class='reviewItem'><span class='reviewTitle'>Cusomer Email:</span>{$_REQUEST['CustomerEmail']}</div>";
endif;
if($_REQUEST['CustomerPhone']):
    echo "<div class='reviewItem'><span class='reviewTitle'>Customer Phone:</span>{$_REQUEST['CustomerPhone']}</div>";
endif;
if($_REQUEST['CustomerAddress']): 
    echo "<div class='reviewItem'><span class='reviewTitle'>Customer Address:</span>{$_REQUEST['CustomerAddress']}</div>";
endif;

Answer 6

您可以随时使用短途：

echo (isset($_REQUEST['CustomerName'])) ? "<div class='reviewItem'><span class='reviewTitle'>Cusomer Name:</span>{$_REQUEST['CustomerName']}</div>" : false;

逻辑：

echo (condition) ? TRUE : FALSE;

PHP if语句从表单回显信息

6 个答案: