如果语句检查性别

Question

我遇到了这种简单的PHP表单处理问题。

我的变量是：

<?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>'; 
} 

?> 

我想检查我的表单中选择男性或女性用户。无论他们选择哪一个，我都需要与先生或女士以及他们的名字和姓氏重复发表声明，欢迎参加本周的PHP编程课程。

我从收音机选择拉$gender。我在第三条if语句中不断收到错误。我真的可以用某人帮助这个。先谢谢你。

Answer 1

你写的：

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

成为：

if(isset(some_boolean_value)) 

这是一个错误，因为isset()需要一个变量来检查。你大概的意思是：

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

Answer 2

你misssing一个{后 '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>'; 
} 

尝试这样的事情

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 
} 

，你也可以做这样的，如果你喜欢

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 
} 

你也可以回头看看你的错误检查

$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>"; 
}