如果語句檢查性別

Question

我遇到了這種簡單的PHP表單處理問題。

我的變量是：

<?php 
$first = $_POST['first']; 
$last = $_POST['last']; 
$gender = $_POST['gender']; 
?> 

<?php 
if($_POST['submit'] == "submit") 
{ 
$errorMessage = " "; 
if(empty($_POST['$first'])) { 
    $errorMessage .= "<li>You forgot to enter your first name!</li>"; 
} 
if(empty($_POST['$last'])){ 
    $errorMessage .= "<li>You forgot to enter your last name!</li>"; 
} 
if(isset($_POST['$gender'] == 'Male')) 
    echo '<p><b>Hello, Mr ".$first."\\".$last." welcome to this weeks lesson on  PHP  programming!</b></p>'; 
}else { 
    echo '<p><b>Hello Ms. ".$first."\\".$last." welcome to this weeks lesson on PHP programming!</b></p>'; 
} 

?> 

我想檢查我的表單中選擇男性或女性用戶。無論他們選擇哪一個，我都需要與先生或女士以及他們的名字和姓氏重複發表聲明，歡迎參加本週的PHP編程課程。

我從收音機選擇拉$gender。我在第三條if語句中不斷收到錯誤。我真的可以用某人幫助這個。先謝謝你。

Answer 1

你寫的：

if(isset($_POST['$gender'] == 'Male')) 

成爲：

if(isset(some_boolean_value)) 

這是一個錯誤，因爲isset()需要一個變量來檢查。你大概的意思是：

if(isset($_POST['gender']) && $_POST['gender'] == 'Male') 

Answer 2

你misssing一個{後 '男'））

if(isset($_POST['$gender'] == 'Male')) { 
echo '<p><b>Hello, Mr ".$first."\\".$last." welcome to this weeks lesson on  PHP   programming!</b></p>'; 
}else { 
echo '<p><b>Hello Ms. ".$first."\\".$last." welcome to this weeks lesson on PHP programming!</b></p>'; 
} 

嘗試這樣的事情

if(isset($_POST['gender'])){ 
if($_POST['gender'] == "male"){ 
    $gender= "Male"; 
}elseif($_POST['gender'] == "female"){ 
    $gender= "Female"; 
} 
if($gender== 'Male') { 
echo '<p><b>Hello, Mr ".$first."\\".$last." welcome to this weeks lesson on  PHP  programming!</b></p>'; 
}elseif($gender== 'Female') { 
echo '<p><b>Hello Ms. ".$first."\\".$last." welcome to this weeks lesson on PHP programming!</b></p>'; 
} 
}else { 
//no Gender set 
} 

，你也可以做這樣的，如果你喜歡

if(isset($_POST['gender'])){ 
if($_POST['gender'] == "male"){ 
    echo '<p><b>Hello, Mr ".$first."\\".$last." welcome to this weeks lesson on  PHP  programming!</b></p>'; 
}elseif($_POST['gender'] == "female"){ 
    echo '<p><b>Hello Ms. ".$first."\\".$last." welcome to this weeks lesson on PHP programming!</b></p>'; 
} 

}else { 
//no Gender set 
} 

你也可以回頭看看你的錯誤檢查

$errorMessage = " "; 

if(empty($first)) { 
$errorMessage .= "<li>You forgot to enter your first name!</li>"; 
} 
if(empty($last)) { 
$errorMessage .= "<li>You forgot to enter your last name!</li>"; 
}