我看到其他SO链接有相同的错误，但没有一个适用于我的情况。
我正在尝试将图片上传到文件夹＆＃34; user_images＆＃34;并将图像路径保存在DB列＆＃34; user_Pic＆＃34;使用MySQL PDO。
db file
try{
$DB_con = new PDO("mysql:host={$DB_HOST};dbname={$DB_NAME}",$DB_USER,$DB_PASS);
$DB_con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
码
if(!isset($errMSG))
{
$stmt = $DB_con->prepare('INSERT INTO tbl_users(userPic) VALUES(:upic)');
$stmt->bindParam(':upic',$userpic); // error in this line
if($stmt->execute())
{
$successMSG = "new record succesfully inserted ...";
header("refresh:5;index.php"); // redirects image view page after 5 seconds.
}
else
{
$errMSG = "error while inserting....";
}
}
错误：
Fatal error: Uncaught exception 'PDOException' with message
'SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '' for
key 'userEmail'' in /var/www/html/sbdev2/php/site3/addnew.php:73 Stack trace: #0
/var/www/html/sbdev2/php/site3/addnew.php(73): PDOStatement->execute() #1 {main}
thrown in /var/www/html/sbdev2/php/site3/addnew.php on line 73
完整代码：
<?php
$DB_HOST = 'localhost';
$DB_USER = 'root';
$DB_PASS = 'Outthinking123@';
$DB_NAME = 'designer3';
try{
$DB_con = new PDO("mysql:host={$DB_HOST};dbname={$DB_NAME}",$DB_USER,$DB_PASS);
$DB_con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e){
echo $e->getMessage();
}
?>
<?php
error_reporting( ~E_NOTICE ); // avoid notice
//require_once 'dbconfig.php';
if(isset($_POST['btnsave']))
{
$imgFile = $_FILES['user_image']['name'];
$tmp_dir = $_FILES['user_image']['tmp_name'];
$imgSize = $_FILES['user_image']['size'];
if(empty($imgFile)){
$errMSG = "Please Select Image File.";
}
else
{
$upload_dir = 'user_images/'; // upload directory
$imgExt = strtolower(pathinfo($imgFile,PATHINFO_EXTENSION)); // get image extension
// valid image extensions
$valid_extensions = array('jpeg', 'jpg', 'png', 'gif'); // valid extensions
// rename uploading image
$userpic = rand(1000,1000000).".".$imgExt;
// allow valid image file formats
if(in_array($imgExt, $valid_extensions)){
// Check file size '5MB'
if($imgSize < 5000000) {
move_uploaded_file($tmp_dir,$upload_dir.$userpic);
}
else{
$errMSG = "Sorry, your file is too large.";
}
}
else{
$errMSG = "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
}
}
// if no error occured, continue ....
if(!isset($errMSG))
{
$stmt = $DB_con->prepare('INSERT INTO tbl_users(userPic) VALUES(:upic)');
$stmt->bindParam(':upic',$userpic);
if($stmt->execute())
{
$successMSG = "new record succesfully inserted ...";
header("refresh:5;index.php"); // redirects image view page after 5 seconds.
}
else
{
$errMSG = "error while inserting....";
}
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Upload, Insert, Update, Delete an Image using PHP MySQL - Coding Cage</title>
<link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
<!-- Optional theme -->
<link rel="stylesheet" href="bootstrap/css/bootstrap-theme.min.css">
</head>
<body>
<div class="navbar navbar-default navbar-static-top" role="navigation">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand" href="http://www.codingcage.com" title='Programming Blog'>Coding Cage</a>
<a class="navbar-brand" href="http://www.codingcage.com/search/label/CRUD">CRUD</a>
<a class="navbar-brand" href="http://www.codingcage.com/search/label/PDO">PDO</a>
<a class="navbar-brand" href="http://www.codingcage.com/search/label/jQuery">jQuery</a>
</div>
</div>
</div>
<div class="container">
<div class="page-header">
<h1 class="h2">add new user. <a class="btn btn-default" href="index.php"> <span class="glyphicon glyphicon-eye-open"></span> view all </a></h1>
</div>
<?php
if(isset($errMSG)){
?>
<div class="alert alert-danger">
<span class="glyphicon glyphicon-info-sign"></span> <strong><?php echo $errMSG; ?></strong>
</div>
<?php
}
else if(isset($successMSG)){
?>
<div class="alert alert-success">
<strong><span class="glyphicon glyphicon-info-sign"></span> <?php echo $successMSG; ?></strong>
</div>
<?php
}
?>
<form method="post" enctype="multipart/form-data" class="form-horizontal">
<table class="table table-bordered table-responsive">
<tr>
<td><label class="control-label">Profile Img.</label></td>
<td><input class="input-group" type="file" name="user_image" accept="image/*" /></td>
</tr>
<tr>
<td colspan="2"><button type="submit" name="btnsave" class="btn btn-default">
<span class="glyphicon glyphicon-save"></span> save
</button>
</td>
</tr>
</table>
</form>
<div class="alert alert-info">
<strong>tutorial link !</strong> <a href="http://www.codingcage.com/2016/02/upload-insert-update-delete-image-using.html">Coding Cage</a>!
</div>
</div>
<!-- Latest compiled and minified JavaScript -->
<script src="bootstrap/js/bootstrap.min.js"></script>
</body>
</html>