PHP if語句從形式

Question

回聲信息我有一個表格審覈頁面的偉大工程，電話：

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>"; 

的問題是，我有一噸沒有得到填補了領域。我想在echo之前加上一個「if」語句來檢查它是否有數據。如果不是，則不顯示任何內容。我對PHP很陌生，所以我不確定是否可以打電話給我：

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

在此先感謝您的幫助。乾杯。

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>" : ""; 

嘗試。

Answer 2

嘗試

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

你只是得到它。試試這個：

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

PHP的isset檢查，看是否被引用變量賦值 - 如果這樣做，回聲它。

Answer 4

我通常會這樣寫，測試的VAR被設置，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

你說這個？

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

您可以隨時使用短的路：

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

邏輯：

echo (condition) ? TRUE : FALSE;