我使用教程制作一个CRUD ajax和php，只做了一些小修改。
[https://www.codexworld.com/php-crud-operations-jquery-ajax-mysql/][1]
我想添加要与其他输入一起上传的图片。所以我的问题是数据{name＆amp;电子邮件＆amp;存储的手机}会跳过图像。 {user_image}
AJAX代码：
<script type="text/javascript" language="javascript">
function getUsers(){
$.ajax({
type: 'POST',
url: 'crud3/userAction.php',
data: 'action_type=view&'+$("#userForm").serialize(),
success:function(html){
$('#userData').html(html);
}
});
}
function userAction(type,id){
id = (typeof id == "undefined")?'':id;
var statusArr = {add:"added",edit:"updated",delete:"deleted"};
var userData = "";
if (type == 'add') {
userData = $("#addForm").find('.form').serialize()+'&action_type='+type+'&id='+id;
}else if (type == 'edit'){
userData = $("#editForm").find('.form').serialize()+'&action_type='+type;
}else{
userData = 'action_type='+type+'&id='+id;
}
$.ajax({
type: 'POST',
url: 'crud3/userAction.php',
dataType:'html',
data: userForm,
mimeType: "multipart/form-data",
contentType: false,
cache: false,
processData: false,
success:function(msg){
alert(userData);
if(msg == 'ok'){
alert('User data has been '+statusArr[type]+' successfully.');
getUsers();
$('.form')[0].reset();
$('.formData').slideUp();
}else{
alert('Some problem occurred, please try again.');
}
}
});
}
function editUser(id){
$.ajax({
type: 'POST',
dataType:'JSON',
url: 'crud3/userAction.php',
data: 'action_type=data&id='+id,
success:function(data){
$('#idEdit').val(data.id);
$('#nameEdit').val(data.name);
$('#emailEdit').val(data.email);
$('#phoneEdit').val(data.phone);
$('#editForm').slideDown();
}
});
}
</script>
userAction.php代码：
<?php
include ('DB.php');
require 'function.php';
$db = new DB();
$tblName = 'users';
if(isset($_POST['action_type']) && !empty($_POST['action_type'])){
if($_POST['action_type'] == 'data'){
$conditions['where'] = array('id'=>$_POST['id']);
$conditions['return_type'] = 'single';
$user = $db->getRows($tblName,$conditions);
echo json_encode($user);
}elseif($_POST['action_type'] == 'view'){
$users = $db->getRows($tblName,array('order_by'=>'id DESC'));
if(!empty($users)){
$count = 0;
foreach($users as $user): $count++;
echo '<tr>';
echo '<td>#'.$count.'</td>';
echo '<td>'.$user['name'].'</td>';
echo '<td>'.$user['email'].'</td>';
echo '<td>'.$user['phone'].'</td>';
echo '<td>'.$user['img'].'</td>';
echo '<td><a href="javascript:void(0);" class="c-teal-500 ti-view-list-alt" onclick="editUser(\''.$user['id'].'\')"></a><a href="javascript:void(0);" class="c-blue-500 ti-share" onclick="return confirm(\'Are you sure to delete data?\')?userAction(\'delete\',\''.$user['id'].'\'):false;"></a></td>';
echo '</tr>';
endforeach;
}else{
echo '<tr><td colspan="5">No user(s) found......</td></tr>';
}
}
elseif($_POST['action_type'] == 'add'){
$image = '';
if($_FILES["user_image"]["name"] != '')
{
$image = upload_image();
}
$userData = array(
'name' => $_POST['name'],
'email' => $_POST['email'],
'phone' => $_POST['phone']
'img' => $image
);
echo $userData;
$insert = $db->insert($tblName,$userData);
echo $insert?'ok':'err';
}
elseif($_POST['action_type'] == 'edit'){
if(!empty($_POST['id'])){
$userData = array(
'name' => $_POST['name'],
'email' => $_POST['email'],
'phone' => $_POST['phone']
);
$condition = array('id' => $_POST['id']);
$update = $db->update($tblName,$userData,$condition);
echo $update?'ok':'err';
}
}elseif($_POST['action_type'] == 'delete'){
if(!empty($_POST['id'])){
$condition = array('id' => $_POST['id']);
$delete = $db->delete($tblName,$condition);
echo $delete?'ok':'err';
}
}
exit;
}
?>
function.php代码：
<?php
$username = 'root';
$password = '';
$connection = new PDO( 'mysql:host=localhost;dbname=codexworld', $username, $password );
function upload_image()
{
if(isset($_FILES['user_image']))
{
$extension = explode('.', $_FILES['user_image']['name']);
$new_name = rand() . '.' . $extension[1];
$destination = './upload/' . $new_name;
move_uploaded_file($_FILES['user_image']['tmp_name'], $destination);
return $new_name;
}
}
function get_image_name($id)
{
$statement = $connection->prepare("SELECT img FROM users WHERE id = '$id'");
$statement->execute();
$result = $statement->fetchAll();
foreach($result as $row)
{
return $row["image"];
}
}
?>
DB.php代码：
<?php
/*
* DB Class
* This class is used for database related (connect, insert, update, and delete) operations
* @author CodexWorld.com
* @url http://www.codexworld.com
* @license http://www.codexworld.com/license
*/
class DB{
private $dbHost = "localhost";
private $dbUsername = "root";
private $dbPassword = "";
private $dbName = "codexworld";
public function __construct(){
if(!isset($this->db)){
// Connect to the database
$conn = new mysqli($this->dbHost, $this->dbUsername, $this->dbPassword, $this->dbName);
if($conn->connect_error){
die("Failed to connect with MySQL: " . $conn->connect_error);
}else{
$this->db = $conn;
}
}
}
/*
* Returns rows from the database based on the conditions
* @param string name of the table
* @param array select, where, order_by, limit and return_type conditions
*/
public function getRows($table,$conditions = array()){
$sql = 'SELECT ';
$sql .= array_key_exists("select",$conditions)?$conditions['select']:'*';
$sql .= ' FROM '.$table;
if(array_key_exists("where",$conditions)){
$sql .= ' WHERE ';
$i = 0;
foreach($conditions['where'] as $key => $value){
$pre = ($i > 0)?' AND ':'';
$sql .= $pre.$key." = '".$value."'";
$i++;
}
}
if(array_key_exists("order_by",$conditions)){
$sql .= ' ORDER BY '.$conditions['order_by'];
}
if(array_key_exists("start",$conditions) && array_key_exists("limit",$conditions)){
$sql .= ' LIMIT '.$conditions['start'].','.$conditions['limit'];
}elseif(!array_key_exists("start",$conditions) && array_key_exists("limit",$conditions)){
$sql .= ' LIMIT '.$conditions['limit'];
}
$result = $this->db->query($sql);
if(array_key_exists("return_type",$conditions) && $conditions['return_type'] != 'all'){
switch($conditions['return_type']){
case 'count':
$data = $result->num_rows;
break;
case 'single':
$data = $result->fetch_assoc();
break;
default:
$data = '';
}
}else{
if($result->num_rows > 0){
while($row = $result->fetch_assoc()){
$data[] = $row;
}
}
}
return !empty($data)?$data:false;
}
/*
* Insert data into the database
* @param string name of the table
* @param array the data for inserting into the table
*/
public function insert($table,$data){
if(!empty($data) && is_array($data)){
$columns = '';
$values = '';
$i = 0;
if(!array_key_exists('created',$data)){
$data['created'] = date("Y-m-d H:i:s");
}
if(!array_key_exists('modified',$data)){
$data['modified'] = date("Y-m-d H:i:s");
}
foreach($data as $key=>$val){
$pre = ($i > 0)?', ':'';
$columns .= $pre.$key;
$values .= $pre."'".$val."'";
$i++;
}
$query = "INSERT INTO ".$table." (".$columns.") VALUES (".$values.")";
$insert = $this->db->query($query);
return $insert?$this->db->insert_id:false;
}else{
return false;
}
}
/*
* Update data into the database
* @param string name of the table
* @param array the data for updating into the table
* @param array where condition on updating data
*/
public function update($table,$data,$conditions){
if(!empty($data) && is_array($data)){
$colvalSet = '';
$whereSql = '';
$i = 0;
if(!array_key_exists('modified',$data)){
$data['modified'] = date("Y-m-d H:i:s");
}
foreach($data as $key=>$val){
$pre = ($i > 0)?', ':'';
$colvalSet .= $pre.$key."='".$val."'";
$i++;
}
if(!empty($conditions)&& is_array($conditions)){
$whereSql .= ' WHERE ';
$i = 0;
foreach($conditions as $key => $value){
$pre = ($i > 0)?' AND ':'';
$whereSql .= $pre.$key." = '".$value."'";
$i++;
}
}
$query = "UPDATE ".$table." SET ".$colvalSet.$whereSql;
$update = $this->db->query($query);
return $update?$this->db->affected_rows:false;
}else{
return false;
}
}
/*
* Delete data from the database
* @param string name of the table
* @param array where condition on deleting data
*/
public function delete($table,$conditions){
$whereSql = '';
if(!empty($conditions)&& is_array($conditions)){
$whereSql .= ' WHERE ';
$i = 0;
foreach($conditions as $key => $value){
$pre = ($i > 0)?' AND ':'';
$whereSql .= $pre.$key." = '".$value."'";
$i++;
}
}
$query = "DELETE FROM ".$table.$whereSql;
$delete = $this->db->query($query);
return $delete?true:false;
}
}
?>
答案 0 :(得分：0)