单击编辑按钮时如何传递所有用户的数据？

我使用php创建了一个显示页面，其中所有用户记录都显示在一个表中，并且有删除和编辑按钮来管理用户，对于删除选项，我设法做到了，但自昨天以来已经有几个小时试图做编辑按钮。我希望所有用户的数据(full_name, email, password…city)从display.php页面传递到update.php，并且我希望将更新的新数据通过我将其作为updateform.html的表单键入，但我对如何连接这3个文件以成功更新用户详细信息感到困。

文件如下:

display.php

<!DOCTYPE html>
<html>
<head>
<style>
table,
td,
th {
border: 1.5px solid #d9d9d9;
border-collapse: collapse;
}
table {
width: 100%;
}
</style>
</head>
<body>
</div>
<div class="container">
<?php
$conn = mysqli_connect("localhost", "root", "", "finalproject") or die("<script>alert('Connection Failed.')</script>");
$sql = "SELECT * FROM users" or die("<script>alert('Connection Failed.')</script>");
$result = mysqli_query($conn, $sql);
?>
<div class="row justify-contect-center">
<table class="table" border-size="1">
<thead>
<tr>
<th>Username</th>
<th>Full Name</th>
<th>Email</th>
<th>Password</th>
<th>Age</th>
<th>Gender</th>
<th>Phone Number</th>
<th>Work Duration</th>
<th>IG Account</th>
<th>State</th>
<th>Postcode</th>
<th>City</th>
<th>Action</th>
</tr>
</thead>
<?php
//while($row = $result->fetch_assoc()); 
while ($row = $result->fetch_assoc()) :
?>
<tr>
<td><?php echo $row['username'] ?></td>
<td><?php echo $row['full_name'] ?></td>
<td><?php echo $row['email'] ?></td>
<td><?php echo $row['password'] ?></td>
<td><?php echo $row['age'] ?></td>
<td><?php echo $row['gender'] ?></td>
<td><?php echo $row['phone_number'] ?></td>
<td><?php echo $row['work_duration'] ?></td>
<td><?php echo $row['ig_account'] ?></td>
<td><?php echo $row['state'] ?></td>
<td><?php echo $row['postcode'] ?></td>
<td><?php echo $row['city'] ?></td>
<td>
<a href="updateform.html?edit=<?php if(isset($username)){
$conn->query("Select * from users where username='$username'");
} ?>" class="btn btn-info">Edit</a>
<a href="delete.php?delete=<?php echo $row['username']; ?>" class="btn btn-danger">Delete</a>
</td>
</tr>
<?php endwhile; ?>
</table>
</div>
<?php
function pre_r($array)
{
echo '<pre>';
print_r($array);
echo '</pre>';
}
?>
</body>
</html>

updateform.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="style.css">
<title>Update Information</title>
</head>
<body>
<div class="container">
<form action="update.php" method="POST" class="login-email">
<p class="login-text" style="font-size: 2rem; font-weight: 800;">Update Information</p>

<div class="input-group" style="margin-bottom: 40px;">Full Name:
<input type="text" name="full_name" value="" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Email:
<input type="email" name="email" value="" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Password:
<input type="password" name="password" value="" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Confirm Password:
<input type="password" name="cpassword" value="" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Age:
<input type="text" name="age" value="" required>
</div>
<div style="margin-top: 40px; margin-bottom: 20px;">Gender:
<label for="f-option" class="l-radio" value="">
<input type="radio" name="gender" tabindex="1" value="Male" style="margin-left:10px;">
<span> Male</span>
<input type="radio" name="gender" tabindex="2" value="Female" style="margin-left:20px;">
<span> Female</span>
</div>
<div class="input-group" style="margin-bottom: 40px;">Phone Number:
<input type="text" name="phone_number" value="" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Work Duration:
<input type="text" name="work_duration" value="" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">IG Account:
<input type="text" name="ig_account" value="" required>
</div>
<div class="form-group" style="margin-bottom: 10px;">
<label>State:</label>
<select name="state" class="form-control" value="" required>
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>
</div>
<div class="input-group" style="margin-bottom: 40px;">Postcode:
<input type="text" name="postcode" value="" required>
</div>
<div class="input-group" style="margin-bottom: 50px;">City:
<input type="text" name="city" value="" required>
</div>
<div class="input-group" style="margin-top:40px;">
<button name="update" class="btn">Update</button>
</div>
</form>
</div>
</body>
</html>

update.php

<?php
$conn = mysqli_connect("localhost", "root", "", "finalproject") or die("<script>alert('Connection Failed.')</script>");
if (isset($_POST['update'])) {
$full_name = $_POST['full_name'];
$email = $_POST['email'];
$password = $_POST['password'];
$cpassword = $_POST['cpassword'];
$phone_number = $_POST['phone_number'];
$work_duration = $_POST['work_duration'];
$ig_account = $_POST['ig_account'];
$state = $_POST["state"];
$postcode = $_POST['postcode'];
$city = $_POST['city'];
$gender = $_POST['gender'];
$age = $_POST['age'];
}
?>

我可以看到你的代码有很多问题，所以我超越了为你重新编码，甚至为你做了更新部分，希望你能从中学到一些技巧。根据你的代码，我猜你对这款游戏相当陌生……我添加了额外的文件，让你的生活更轻松，从长远来看。

*一些小技巧

你不需要使用?>
<?=$username?>与<? echo $username; ?>相同。省眼，简单。
尽量不要使用表格，我没有走得太远，扰乱你的，但检查flex表或使用div

_config.php把你的db和其他设置放在这个文件中，以便包含在所有页面中，这样你就不会浪费时间一遍又一遍地写同样的东西

<?php
$db = new mysqli('localhost', 'user', 'pass', 'riseofwar_v1');
if ($db->connect_errno > 0) {
die('Unable to connect to database [' . $db->connect_error . ']');
}

_funcs.php我将给出我的基本库，用于清理输入字段

<?php
include('_config.php');
// BASIC FUNCTIONS; Carry this library to all your future projects too!
function abc ($input){ return preg_match('/^[A-Z]+$/i', $input); }
function abcSpc ($input){ return preg_match('/^[a-z][a-z ]*$/i', $input); }
function abcNum ($input){ return preg_match('/^[A-Z0-9]+$/i', $input); }
function abcNumSpc ($input){ return preg_match('/^[A-Z0-9 ]+$/i', $input); }
function abcNumU ($input){ return preg_match('/^[A-Z0-9_-]+$/i', $input); }
function abcNumD ($input){ return preg_match('/^[A-Z0-9-]+$/i', $input); }
function num ($input){ if(strlen($input) > 24){ $input=0; }if(!preg_match('/^[0-9]+$/', $input)){ $input=0; } return $input; }
function numDot ($input){ if(strlen($input) > 24){ $input=0; }if(!preg_match('/^[0-9.]+$/', $input)){ $input=0; } return $input; }
function numU ($input){ return preg_match('/^[0-9_-]+$/i', $input); }
function is_odd($num){ return($num & 1); }
function email ($input){ return filter_var($input, FILTER_VALIDATE_EMAIL); }
function phone ($input){ $phone = preg_replace('/[^0-9]/', '', $input); if(strlen($phone) < 10 || !num($phone)) { $input=false; } return $input; }
function is_url($input){ return preg_match('/^(http|https)://[a-z0-9]+([-.]{1}[a-z0-9]+)*.[a-z]{2,5}'.'((:[0-9]{1,5})?/.*)?$/i',$input); }
function is_uri ($input){ return preg_match('/^[a-z0-9-]+$/i', $input); }
function findIt($find,$string){ return preg_match("/$find/i","$string"); }

_html.php你会喜欢的……修改你创建的每个HTML页面的页眉和页脚…这是您包含在所有现有和新页面中的文件。

<?php
include('_funcs.php');
// Simple function you can call on every page so you don't have to edit each file every time you change something in the headers
function head($title){?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="style.css">
<title><?=$title?></title>
</head>
<body>
<?
}
// Same as the above function, just the footer
function foot(){?>
</body>
</html>
<? }

display.php

<?php
include('_html.php');
head('Viewing Users');
?>
<div class="container">
<div class="row justify-contect-center">
<table class="table" border-size="1">
<thead>
<tr>
<th>Username</th>
<th>Full Name</th>
<th>Email</th>
<th>Password</th>
<th>Age</th>
<th>Gender</th>
<th>Phone Number</th>
<th>Work Duration</th>
<th>IG Account</th>
<th>State</th>
<th>Postcode</th>
<th>City</th>
<th>Action</th>
</tr>
</thead>
<?php
$result = $db->query("SELECT * FROM users ORDER BY id LIMIT 25;");
while ($row = $result->fetch_assoc()) {?>
<tr>
<td><?php echo $row['username'] ?></td>
<td><?php echo $row['full_name'] ?></td>
<td><?php echo $row['email'] ?></td>
<td><?php echo $row['password'] ?></td>
<td><?php echo $row['age'] ?></td>
<td><?php echo $row['gender'] ?></td>
<td><?php echo $row['phone_number'] ?></td>
<td><?php echo $row['work_duration'] ?></td>
<td><?php echo $row['ig_account'] ?></td>
<td><?php echo $row['state'] ?></td>
<td><?php echo $row['postcode'] ?></td>
<td><?php echo $row['city'] ?></td>
<td>
<a href="edit.php?id=<?=$row['id']?>" class="btn btn-info">Edit</a>
<a href="delete.php?delete=<?php echo $row['username']; ?>" class="btn btn-danger">Delete</a>
</td>
</tr>
<?}?>
</table>
</div>
<? foot();

edit。

<?php
include('_html.php');
$id = num($_GET['id']) ?: false; // Check the ID in the URL to make sure it's a number
$user = $db->query("SELECT * FROM users WHERE id='$id'")->fetch_assoc();
if (isset($_POST['update'])) {
// CHECK VALUES BEFORE YOU UPDATE THEM
$user['full_name'] = abcSpc($_POST['full_name']) ? $_POST['full_name'] : $user['full_name'];
$user['email'] = email($_POST['email'])  ? $_POST['email'] : $user['email'];
$user['password'] = abcNum($_POST['password']) ? $_POST['password'] : $user['password'];
$user['password'] = $user['password'] != $user['cpassword'] ? $user['password'] : $_POST['password'];
$user['phone_number'] = phone($_POST['phone_number']) ? $_POST['phone_number'] : $user['phone_number'];
$user['work_duration'] = num($_POST['work_duration']) ? $_POST['work_duration'] : $user['work_duration'];
$user['ig_account'] = abcSpc($_POST['ig_account']) ? $_POST['ig_account'] : $user['ig_account'];
$user['state'] = num($_POST["state"]) ? $_POST['state'] : $user['state'];
$user['postcode'] = abc($_POST['postcode']) ? $_POST['postcode'] : $user['postcode'];
$user['city'] = num($_POST['city']) ? $_POST['city'] : $user['city'];
$user['gender'] = num($_POST['gender'])  ? $_POST['gender'] : $user['gender'];
$user['age'] = num($_POST['age']) ? $_POST['age'] : $user['age'];
$msg = 'Updated! <a href="display.php">View all users again</a>';
$db->query("UPDATE users SET full_name='$user[full_name]', email='$user[email]', password='$user[password]', phone_number='$user[phone_number]', work_duration='$user[work_duration]', ig_account='$user[ig_account]', state='$user[state]', postcode='$user[postcode]', city='$user[city]', gender='$user[gender]', age='$user[age]' WHERE id='$user[id]';");
}


head('Update Information');
?>
<?=$msg?>
<div class="container">
<form method="POST" class="login-email">
<p class="login-text" style="font-size: 2rem; font-weight: 800;">Update Information</p>
<div class="input-group" style="margin-bottom: 40px;">Full Name:
<input type="text" name="full_name" value="<?=$user['full_name']?>" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Email:
<input type="email" name="email" value="<?=$user['email']?>" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Password:
<input type="password" name="password" value="">
</div>
<div class="input-group" style="margin-bottom: 40px;">Confirm Password:
<input type="password" name="cpassword" value="">
</div>
<div class="input-group" style="margin-bottom: 40px;">Age:
<input type="text" name="age" value="<?=$user['age']?>" required>
</div>
<div style="margin-top: 40px; margin-bottom: 20px;">Gender:
<label for="f-option" class="l-radio" value="">
<input type="radio" name="gender" checked tabindex="1" value="Male" style="margin-left:10px;">
<span> Male</span>
<input type="radio" name="gender" tabindex="2" value="Female" style="margin-left:20px;">
<span> Female</span>
</div>
<div class="input-group" style="margin-bottom: 40px;">Phone Number:
<input type="text" name="phone_number" value="<?=$user['phone_number']?>" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">Work Duration:
<input type="text" name="work_duration" value="<?=$user['work_duration']?>" required>
</div>
<div class="input-group" style="margin-bottom: 40px;">IG Account:
<input type="text" name="ig_account" value="<?=$user['ig_account']?>" required>
</div>
<div class="form-group" style="margin-bottom: 10px;">
<label>State:</label>
<select name="state" class="form-control" required>
<option value="1" <?=$state==1?'checked':''?>>Option 1</option>
<option value="2" <?=$state==2?'checked':''?>>Option 2</option>
<option value="3" <?=$state==3?'checked':''?>>Option 3</option>
</select>
</div>
<div class="input-group" style="margin-bottom: 40px;">Postcode:
<input type="text" name="postcode" value="<?=$user['postcode']?>" required>
</div>
<div class="input-group" style="margin-bottom: 50px;">City:
<input type="text" name="city" value="<?=$user['city']?>" required>
</div>
<div class="input-group" style="margin-top:40px;">
<button name="update" class="btn">Update</button>
</div>
</form>
</div>
<? foot();

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