如果您的PHP页面变为空白，原因是什么 [英] What is the cause if your PHP page goes blank

问题描述

这是我，这是我的assignemet试图修复这个PHP脚本很长一段时间



首先开始，它发出错误，

hi it is me again, this is my assignemet been trying to fix this php script for a long time

first to begin, it was issuing an error,

Warning: join(): Invalid arguments passed in C

这是第一个错误



，第二个错误是：通知：c中的未定义索引。

如果我的html代码，我在注册时注册了一些值，但在我的php中代码我输入了，所以我修正了



现在我修完它后，我试着注册一个用户，现在我得到一个空白页面，不要知道是什么原因但也许第三只眼睛可以看到我不能。请帮助

这是我试过的。



我尝试过的事情：

this is the first error

and the second error was: notice: undefined index in c.
apprently if my html code, i had register a the values when registering but in my php code i had enter instead, so i fix it right

now after i finished fixing it, i tried to register a user and now i am getting a blank page, dont know what is the cause but maybe a third eye can see what I cant. please help
here is what i have tried.

What I have tried:

<pre><?php

		//$register=$_POST['register_user']; 
		 if(isset($_POST['register']))
		{
			
			//capture the variable from the form and store in php variables
			$title=$_POST['title'];
			$firstname=$_POST['fname'];
			$lastname=$_POST['lname'];
			$username=$_POST['username'];
			$email=$_POST['email'];
			$gender=$_POST['gender'];
			$service= join(", ", $_POST['services']);
			$address=$_POST['address'];
			$mypwd=$_POST['mypwd'];
			
			include'db_server.php';
			
			//Query the database
			$sql="SELECT * FROM members WHERE username='$username'";
			
			$result= mysqli_query($conn, $sql) or die ("ERROR:" .mysqli_error($conn));
			
			$rowcount=mysqli_num_rows($result);
			
			//checking to see if username is already exist
			if($rowcount >= 1) 
			{
				 echo "<script type=\"text/javascript\">
					  alert('Username already exits');
					  window.location=\"../xhtml/register_user.html\";
					   </script>";
					   
				
				
			}
			else
			{
				//insert data into table
				
				$sql = "INSERT INTO members
				VALUES('$title', '$firstname', '$lastname', '$username', '$email', '$gender', '$service', '$address', md5('$mypwd'))";
			
				if(mysqli_query($conn,$sql))
				{
					
					echo "<script type=\"text/javascript\">
					  alert('Welcome!! $firstname $lastname, you are now a member of the Caribbean Nature Seekers Institute TT(CNSITT)');
					  window.location=\"../index.html\";
					   </script>";
					
					   
						mysqli_close($conn);	
				}
				else
				{
					echo "Error inserting values into database";
				}
				
				//end of line
				
			}
		}
			
			
	
		
			
?>

推荐答案

register =

register=

_POST ['register_user'];
if（isset（

_POST['register_user']; if(isset(

_POST [' 注册']））
{

// 捕获来自表单的变量并存储在php变量中

_POST['register'])) { //capture the variable from the form and store in php variables

这篇关于如果您的PHP页面变为空白，原因是什么的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！