更新的问题:如果没有错误,我正在尝试使用 PHP 将信息添加到 SQL 表中,但我不确定如何让它完全工作,以便它显示错误等。我在哪里放置 PHP 代码?还有我会用什么语言来显示错误?
更新的 HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>TheQuantumBros</title>
<meta http-equiv="Content-Language" content="en-us" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="MainStyles.css" />
<link rel="shortcut icon" href="favicon.ico" />
<style type="text/css">
.style2 {
font-size: xx-large;
color: white;
}
.style3 {
font-size: xx-large;
color: #008000;
}
</style>
</head>
<body style=";background-image:url('bg_wallpaper_black.jpg');margin:0;padding-top:0;">
<div id="topBar" class="topBar">
<h1 id="title" class="title">
<img src="TheQuantumBros3.png" alt="" style="padding-right:5px" />
TheQuantumBros
<img src="TheQuantumBros3.png" alt="" style="padding-left:5px"/>
</h1>
</div>
<div id="topDiv" class="topDiv" style="height:200px">
<div id="topDivFrame" class="topDivFrame" style="background-image:url('TheQuantumBros2.png');height:200px"></div>
</div>
<div id="menuBar" class="menuBar">
<button name="homeButton" class="menuButton1" onclick="javascript:window.location.href='http://www.tqbtest.comlu.com/'">Home</button>
<button name="forumsButton" class="menuButton2">Forums</button>
<button name="bfButton" class="menuButton2">BF P4F</button>
<button name="mcButton" class="menuButton2">Minecraft</button>
<button name="applyButton" class="menuButton2">Applications</button>
<button name="infoButton" class="menuButton2">About Us</button>
</div>
<div style="width:100%;height:150px;margin-top: 5px;margin-left:auto;margin-right:auto;text-align:center">
<div style="width:75%;height:100%;text-align:center">
<span style="width:75%;height:10%;margin-right:15%;margin-left:45%;text-align:center" class="style2">TheQuantumBros Registration</span>
<form method="post" action="register.php" style="height:100%;width:100%;text-align:center">
<span class="registrationText">First Name:</span>
<input name="firstname" type="text" class="registrationInput"/>
<span class="registrationText">Last Name:</span>
<input name="lastname" type="text" class="registrationInput"/>
<span class="registrationText">Username:</span>
<input name="username" type="text" class="registrationInput"/>
<span class="registrationText">Email</span>
<input name="email" type="text" class="registrationInput"/>
<span class="registrationText">Password</span>
<input name="password" type="password" class="registrationInput"/>
<span class="registrationText">Retype Password:</span>
<input name="password2" type="password" class="registrationInput"/>
<span class="registrationText">Region</span>
<select name="region" class="registrationInput">
<option>North America</option>
<option>South America</option>
<option>Europe</option>
<option>Asia</option>
<option>Africa</option>
<option>Australia</option>
</select>
<span style="width:25%"></span>
<input name="Submit1" type="submit" value="Submit" class="registrationSubmit"/>
<span class="notFilled" id="notFilled">*Please fill in all the fields.</span>
</form>
</div>
</div>
更新的 PHP:
$sql="SELECT username, email FROM Profiles";
$result=mysqli_query($con,$sql);
if($result === false){
echo mysqli_error($con);
}else{
while($row = mysqli_fetch_array($result)){
$rows[] = $row;
foreach ($rows as $row) {
if($row['username'] == $_POST['username'] || $row['email'] == $_POST['email']){
//Error: "Username or Email already in use"
}else {
if($_POST['password'] == $_POST['password2']){
if (strpos($_POST['email'],'@') !== false) {
//INSERT INTO code?
}else{
//Error: "Please enter a valid email."
}
}else{
//Error: "Passwords do not match."
}
}
}
mysqli_close($con);
}
}
}else{
//Error code: "Please fill in all fields"
}
?>