PHP if语句从form返回信息 - PHP if statement to echo info from form

我有一个很棒的表单查看页面:

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>";

问题是我有大量的字段没有被填写。我想在回显语句之前放一个"if"语句来检查它是否有数据。如果没有，则不会显示任何内容。我对PHP非常陌生，所以我不确定是否可以调用:

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

提前感谢任何帮助。欢呼。

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。

Try

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>";

你就快成功了。试试这个:

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

PHP的isset检查所引用的变量是否有赋值——如果有，则回显。

我通常这样写，它测试var是否被设置，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>";
}
?>

你是这个意思?

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;

你总是可以使用简短的方式:

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

逻辑:

echo (condition) ? TRUE : FALSE;