这个问题困扰了我一段时间了。基本上我有一个表单，提交时将同时上传多个图像到服务器，并将每个图像的记录插入到Mysql数据库中。
目前，我可以选择并成功将最多6张图像上传到服务器，并将其记录插入到mysql数据库中。
如果我选择7张图片，则只会上传6张图片。如果我选择8,9或10个图像，这是相同的;它总是少于我选择上传的总数。
如果我选择11张图片并提交表单没有任何反应，则不会上传任何图片，也不会将图像记录插入数据库。
我检查了图片，所有图片都在允许的文件类型，大小，尺寸等内。我使用的网络服务器的php.ini文件将max_file_uploads设置为200。
那么为什么它会在一个实例中上传除我的一个图像而在另一个实例中上传所有图像？
代码很长，我试着只包含适用的东西。
additem.php：
//check if the submit button has been clicked
if( isset( $_POST['submit'] ) ){
//validate the title and description
$title = validate_title($_POST['title']);
$desc = validate_desc($_POST['desc']);
//Get other posted variables
$cat = $_POST['cat'];
$year = $_POST['year'];
if($title && $desc != false){
//check if an image has been submitted
if((!empty($_FILES["files"])) && ($_FILES['files']['error'][0] == 0)){
// Insert the post
insert_post_db($title, $desc, $year);
// Get id of last inserted post
$post_id = get_postid();
// loop through each individual image
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name){
// Get the image info
$temp_dir = $_FILES['files']['tmp_name'][$key]; // Temporary location of file
$image_type = $_FILES['files']['type'][$key]; // Image filetype
$image_size = $_FILES['files']['size'][$key]; // Image file size
$image_name = $_FILES['files']['name'][$key]; // Image file name
// Get image width and height
$image_dimensions = getimagesize($temp_dir); // returns an array of image info [0] = width, [1] = height
$image_width = $image_dimensions[0]; // Image width
$image_height = $image_dimensions[1]; // Image height
// Check to make sure there are no errors in ther file
if($_FILES['files']['error'][$key] === UPLOAD_ERR_OK){
// Make sure each filename name is unique when it is uploaded
$random_name = rand(1000,9999).rand(1000,9999).rand(1000,9999).rand(1000,9999);
// Set the path to where the full size image will be stored
$path = 'img/fullsize/'.$random_name . $_FILES['files']['name'][$key];
// Set the path to where the thumb image will be stored
$thumb_path = 'img/thumb_/'.$random_name .$_FILES['files']['name'][$key];
// Set the Maximum dimensions the images are allowed to be
$max_width = 4040;
$max_height = 4040;
// Set the Maximum file size allowed (5MB)
$max_size = 5242880;
// Set the file extensions that are allowed to be uploaded and store them in an array
$allowed = array('image/jpeg','image/png','image/gif');
// Check to make sure the image that is being uploaded has a file extension that we permit
if(in_array($image_type,$allowed)){
// Check to make sure the Image dimensions do not exceed the maximum dimensions allowed
if(($image_width < $max_width) && ($image_height < $max_height)){
// Check to make sure the Image filesize does not exceed the maximum filesize allowed
if($image_size < $max_size){
// Check the shape of the Image (square, standing rectangle, lying rectangle) and assign a value depening on which it is
$case = image_shape($image_width, $image_height);
// Create the new thumbnail dimensions
list($thumb_width, $thumb_height, $smallestside, $x, $y) = thumb_dimensions($case, $image_width, $image_height, $smallestside, $x, $y);
// Create the thumbnails
create_thumbnail($image_type, $image_height, $image_height, $temp_dir, $thumb_path, $thumb_width, $thumb_height, $smallestside, $x, $y);
// move large image from the temporary location to the permanent one
move_uploaded_file($temp_dir, $path);
// Get the new randomly generated filename and remove the directory name from it
$file_name = substr($path, 4);
// Insert a record of the image in the Database
insert_image_db($file_name, $cat, $post_id,$image_size, $image_width, $image_height);
// Tell user image was successfully uploaded
echo "<p>Image uploaded ok.</p>";
// Forward to the review post page
header('Location: reviewpost.php');
}else{
echo $_FILES['files']['name'][$key] . ': unsupported file size.';
}
}else{
echo $_FILES['files']['name'][$key] . ': unsupported image dimensions.';
}
}else{
echo $_FILES['files']['name'][$key] . ': unsupported filetype.';
}
}else{echo 'file error';}
}
}else{
//display error message if user didnt select an image to upload
echo '<p>There was an error processing your submission. Please select an image to upload.</p>';
}
}else{
//display error message if the title or description are incorrect length
echo errormessage($title, $desc);
}
}
功能：
// Find out what shape the image is
function image_shape($image_width, $image_height){
if($image_width == $image_height){$case=1;} // square image
if($image_width < $image_height){$case=2;} // standing rectangle
if($image_width > $image_height){$case=3;} // lying rectangle
return $case;
}
// Set the dimensions of the new thumbnail
function thumb_dimensions($case, $image_width, $image_height){
switch($case){
case 1:
$thumb_width = 200;
$thumb_height = 200;
$y = 0;
$x = 0;
$smallestside = $image_height;
break;
case 2:
$thumb_height = 200;
$ratio = $thumb_height / $image_height;
$thumb_width = round( $image_width * $ratio );
$x = 0;
$y = ($image_height - $image_width) /2;
$smallestside = $image_width;
break;
case 3:
$thumb_width = 200;
$ratio = $thumb_width / $image_width;
$thumb_height = round($image_height * $ratio);
$x = ($image_width - $image_height) /2;
$y = 0;
$smallestside = $image_height;
break;
}
return array($thumb_width, $thumb_height, $smallestside, $x, $y);
}
// Create a thumbnail of the image
function create_thumbnail($image_type, $image_width, $image_height, $temp_dir, $thumb_path, $thumb_width, $thumb_height, $smallestside, $x, $y){
switch($image_type){
case 'image/jpeg';
$thumbsize = 200;
$img = imagecreatefromjpeg($temp_dir);
$thumb = imagecreatetruecolor($thumbsize, $thumbsize);
imagecopyresized($thumb, $img, 0, 0, $x, $y, $thumbsize, $thumbsize, $smallestside, $smallestside);
imagejpeg($thumb, $thumb_path,100);
break;
case 'image/png';
$thumbsize = 200;
$img = imagecreatefrompng($temp_dir);
$thumb = imagecreatetruecolor($thumbsize, $thumbsize);
imagecopyresized($thumb, $img, 0, 0, 0, 0, $thumbsize, $thumbsize, $smallestside, $smallestside);
imagepng($thumb, $thumb_path, 0);
break;
case 'image/gif';
$thumbsize = 200;
$img = imagecreatefromgif($temp_dir);
$thumb = imagecreatetruecolor($thumbsize, $thumbsize);
imagecopyresized($thumb, $img, 0, 0, 0, 0, $thumbsize, $thumbsize, $smallestside, $smallestside);
imagegif($thumb, $thumb_path, 100);
break;
}
}
function insert_post_db($title, $desc, $year){
//test the connection
try{
//connect to the database
$dbh = new PDO("mysql:host=localhost;dbname=mjbox","root", "usbw");
//if there is an error catch it here
} catch( PDOException $e ) {
//display the error
echo $e->getMessage();
}
$stmt = $dbh->prepare("INSERT INTO mjbox_posts(post_year,post_desc,post_title,post_active,post_date)VALUES(?,?,?,?,NOW())");
$stmt->bindParam(1,$year);
$stmt->bindParam(2,$desc);
$stmt->bindParam(3,$title);
$stmt->bindValue(4,"0");
$stmt->execute();
}
function insert_image_db($file_name, $cat, $post_id, $image_size, $image_width, $image_height){
//test the connection
try{
//connect to the database
$dbh = new PDO("mysql:host=localhost;dbname=mjbox","root", "usbw");
//if there is an error catch it here
} catch( PDOException $e ) {
//display the error
echo $e->getMessage();
}
//insert images
$stmt = $dbh->prepare("INSERT INTO mjbox_images(img_file_name,cat_id,post_id,img_size,img_width,img_height,img_is_thumb) VALUES(?,?,?,?,?,?,?)");
$stmt->bindParam(1,$file_name);
$stmt->bindParam(2,$cat);
$stmt->bindParam(3,$post_id);
$stmt->bindParam(4,$image_size);
$stmt->bindParam(5,$image_width);
$stmt->bindParam(6,$image_height);
$stmt->bindValue(7,"0");
$stmt->execute();
}
很抱歉，这是很多代码，我试图只包含可能适用的内容，如果我错过了某些内容，请告诉我。 感谢
答案 0 :(得分：0)
尝试在每个文件之间添加一个usleep计时器。我只是尝试过，它对我有用。我放了0.3秒。
foreach($file .. $k => $v) {
// your stuff above..
usleep(300000); // Sleep between each file, 1000000 = 1 second
}