我无法将多个图像插入数据库。插入图像时，只插入一个图像。并非全部插入。我在这里显示了php插入代码的形式。我还没有找到问题所在。 Plz帮助。
$(document).ready(function() {
if (window.File && window.FileList && window.FileReader) {
$("#files").on("change", function(e) {
var files = e.target.files,
filesLength = files.length;
for (var i = 0; i < filesLength; i++) {
var f = files[i]
var fileReader = new FileReader();
fileReader.onload = (function(e) {
var file = e.target;
$("<span class=\"pip\">" +
"<img class=\"imageThumb\" src=\"" + e.target.result + "\" title=\"" + file.name + "\"/>" +
"<br/><span class=\"remove\">Remove image</span>" +
"</span>").insertAfter("#files");
$(".remove").click(function(){
$(this).parent(".pip").remove();
});
});
fileReader.readAsDataURL(f);
}
});
} else {
alert("Your browser doesn't support to File API")
}
});
input[type="file"] {display: block;}
.imageThumb {max-height: 75px; border: 2px solid; padding: 1px; cursor: pointer;}
.pip {display: inline-block; margin: 10px 10px 0 0;}
.remove { display: block;background: #444;border: 1px solid black;color: white;text-align: center;cursor: pointer;}
.remove:hover {background: white;color: black;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<h3>Upload your images</h3>
<input type="file" id="files" name="files[]" multiple /><br>
<input type="submit" name="submit" value="Submit">
</div>
这是php代码：
<?php
if(isset($_POST['submit']))
{
if(isset($_FILES['files']))
{
$n_arrays = $_FILES['files']['name'];
$tmp_name_arrays = $_FILES['files']['tmp_name'];
$type_arrays = $_FILES['files']['type'];
$size_arrays = $_FILES['files']['size'];
foreach ($tmp_name_arrays as $index => $val)
{
$n_array = $n_arrays[$index];
$tmp_name_array = $tmp_name_arrays[$index];
$type_array = $type_arrays[$index];
$size_array = $size_arrays[$index];
if(move_uploaded_file($tmp_name_array, "ad/data/img/".$n_array))
{
$sql = 'INSERT INTO `image`
SET `img_name` = ?, `img_type` = ?, `img_size` = ?';
// Prepare the SQL statement for execution.
$statement = $connection->prepare($sql);
$bound = $statement->bind_param('sss', $n_array, $type_array, $size_array);
// Execute the prepared statement.
$executed2 = $statement->execute();
if(!$executed2){
echo "error". mysqli_error($connection);
} else {
$_SESSION['s']="Images successfully saved";
header('location:posting_ad_image.php');
}
}
}
}
}
?>
我只能上传最后上传的最后一张图片。所有图像都未插入phpmyadmin数据库。
答案 0 :(得分：1)
问题是您在上传第一张图片后重定向到页面。你需要改变你的if-else统计数据。
<?php
if(isset($_POST['submit']))
{
if(isset($_FILES['files']))
{
$n_arrays = $_FILES['files']['name'];
$tmp_name_arrays = $_FILES['files']['tmp_name'];
$type_arrays = $_FILES['files']['type'];
$size_arrays = $_FILES['files']['size'];
foreach ($tmp_name_arrays as $index => $val)
{
$n_array = $n_arrays[$index];
$tmp_name_array = $tmp_name_arrays[$index];
$type_array = $type_arrays[$index];
$size_array = $size_arrays[$index];
if(move_uploaded_file($tmp_name_array, "ad/data/img/".$n_array))
{
$sql = 'INSERT INTO `image`
SET `img_name` = ?, `img_type` = ?, `img_size` = ?';
// Prepare the SQL statement for execution.
$statement = $connection->prepare($sql);
$bound = $statement->bind_param('sss', $n_array, $type_array, $size_array);
// Execute the prepared statement.
$executed2 = $statement->execute();
if(!$executed2){
echo "error". mysqli_error($connection);
}else{
$_SESSION['s']="Images successfully saved";
}
}
}
header('location:posting_ad_image.php');// add it here after for loop
}
}
?>
答案 1 :(得分：1)
如前所述，您的循环在第一次迭代时遇到redirect，然后在保存并记录所有图像之前将其发送出去。 prepared statements的使用可以通过以下方式完成：您只需执行一次变量的准备和绑定，但执行多次直到语句关闭。
<?php
if( isset( $_POST['submit'],$_FILES['files'] ) ) {
$uploaded=array();
$n_arrays = $_FILES['files']['name'];
$tmp_name_arrays = $_FILES['files']['tmp_name'];
$type_arrays = $_FILES['files']['type'];
$size_arrays = $_FILES['files']['size'];
/* prepare the sql statement before the loop */
$sql = 'INSERT INTO `image` SET `img_name` = ?, `img_type` = ?, `img_size` = ?';
$statement = $connection->prepare( $sql );
if( $statement ){
/* if the statement was prepared successfully, bind the variables that will be used later */
$statement->bind_param('sss', $n_array, $type_array, $size_array );
/* iterate through the images, store the image and log to db */
foreach( $tmp_name_arrays as $index => $val ){
$n_array = $n_arrays[ $index ];
$tmp_name_array = $tmp_name_arrays[ $index ];
$type_array = $type_arrays[ $index ];
$size_array = $size_arrays[ $index ];
if( is_uploaded_file( $tmp_name_array ) ){
$bytes = move_uploaded_file( $tmp_name_array, "ad/data/img/".$n_array );
if( $bytes ){
$status = $statement->execute();
$uploaded[]=$status && $bytes ? $n_array : false;
}
}
}
/* close the statement and db connection */
$statement->close();
$connection->close();
/* remove empty entries from array - if any */
$uploaded=array_filter( $uploaded );
if( !empty( $uploaded ) ){
$_SESSION['s']=sprintf("%d Images successfully saved", count( $uploaded )-1 );
header('Location: posting_ad_image.php');
}
}
}
?>
好的 - 以下是作为完整的端到端测试完成并且正常工作〜您需要编辑$dir变量以适合
<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpwd = 'xxx';
$dbname = 'xxx';
$connection = new mysqli( $dbhost, $dbuser, $dbpwd, $dbname );
$dir='c:/temp/fileuploads/1/';
if( isset( $_POST['submit'], $_FILES['files'] ) ) {
$uploaded=array();
$sql = 'insert into `image` set `img_name` = ?, `img_type` = ?, `img_size` = ?';
$stmt = $connection->prepare( $sql );
if( $stmt ){
$stmt->bind_param( 'sss', $name, $type, $size );
foreach( $_FILES['files']['name'] as $i => $name ) {
if( !empty( $_FILES['files']['tmp_name'][$i] ) ) {
$name = $_FILES['files']['name'][$i];
$size = $_FILES['files']['size'][$i];
$type = $_FILES['files']['type'][$i];
$tmp = $_FILES['files']['tmp_name'][$i];
if( is_uploaded_file( $tmp ) ){
$bytes = move_uploaded_file( $tmp, $dir.$name );
if( $bytes ){
$status = $stmt->execute();
$uploaded[]=$status && $bytes ? $name : false;
}
}
}
}
if( !empty( $uploaded ) ){
$_SESSION['s']=sprintf("%d Images successfully saved", count( $uploaded )-1 );
header('Location: posting_ad_image.php');
}
}
}
?>
<!doctype html>
<html>
<head><title>Multiple file upload</title></head>
<body>
<form method='post' enctype='multipart/form-data'>
<input type='file' name='files[]' multiple />
<input type='submit' name='submit' value='Upload & save' />
</form>
</body>
</html>
来自db的片段
mysql> describe image;
+----------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+-------------+------+-----+---------+-------+
| img_name | longblob | YES | | NULL | |
| img_type | varchar(50) | YES | | NULL | |
| img_size | int(11) | YES | | NULL | |
+----------+-------------+------+-----+---------+-------+
mysql> select * from image;
+-------------------------------------+------------+----------+
| img_name | img_type | img_size |
+-------------------------------------+------------+----------+
| tumblr_ook8swcsSt1tp499co1_1280.jpg | image/jpeg | 81124 |
| tumblr_ook8ukfiTY1tp499co1_1280.jpg | image/jpeg | 201061 |
| tumblr_ook8veeLgq1tp499co1_1280.jpg | image/jpeg | 63477 |
| tumblr_oomaozErOP1tp499co1_1280.jpg | image/jpeg | 283062 |
| tumblr_oomapxb8NJ1tp499co1_1280.jpg | image/jpeg | 577475 |
| tumblr_oomaqzKzlw1tp499co1_1280.jpg | image/jpeg | 382917 |
+-------------------------------------+------------+----------+