使用以下代码从多个输入上传文件并为上传的图片和文件重命名创建缩略图，但无法上传图片。
有人可以纠正我错误的地方
注意：由于某些原因，我不想更改 HTML 文件输入，我需要输入4个。
CODE
<form role="form" method="post" action="" enctype="multipart/form-data" autocomplete="on">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
</form>
<?php
require('includes/config.php');
if (!empty($_POST)) {
$newname = md5(rand() * time());
if (isset($_FILES['files'])) {
$uploadedFiles = array();
foreach ($_FILES['files']['tmp_name'] as $key => $tmp_name) {
$errors = array();
$file_name = md5(uniqid("") . time());
$file_size = $_FILES['files']['size'][$key];
$file_tmp = $_FILES['files']['tmp_name'][$key];
$file_type = $_FILES['files']['type'][$key];
if ($file_type == "image/gif") {
$sExt = ".gif";
} elseif ($file_type == "image/jpeg" || $file_type == "image/pjpeg") {
$sExt = ".jpg";
} elseif ($file_type == "image/png" || $file_type == "image/x-png") {
$sExt = ".png";
}
if (!in_array($sExt, array('.gif', '.jpg', '.png'))) {
$errors[] = "Image types alowed are (.gif, .jpg, .png) only!";
}
if ($file_size > 2097152000) {
$errors[] = 'File size must be less than 2 MB';
}
$desired_dir = "upload/";
if (empty($errors)) {
if (is_dir($desired_dir) == false) {
mkdir("$desired_dir", 0700); // Create directory if it does not exist
}
if (move_uploaded_file($file_tmp, "$desired_dir/" . $file_name . $sExt)) {
$uploadedFiles[$key] = array($file_name . $sExt, 1);
} else {
echo "Couldn't upload file " . $_FILES['files']['name'][$key];
$uploadedFiles[$key] = array($_FILES['files']['name'][$key], 0);
}
} else {
}
}
foreach ($uploadedFiles as $key => $row) {
if (!empty($row[1])) {
$codestr = '$file' . ($key + 1) . ' = $row[0];';
eval($codestr);
} else {
$codestr = '$file' . ($key + 1) . ' = NULL;';
eval($codestr);
}
}
}
$orig_directory = "$desired_dir"; //Full image folder
$thumb_directory = "thumb/"; //Thumbnail folder
/* Opening the thumbnail directory and looping through all the thumbs: */
$dir_handle = opendir($orig_directory); //Open Full image dirrectory
if ($dir_handle > 1) { //Check to make sure the folder opened
$allowed_types = array('jpg', 'jpeg', 'gif', 'png');
$file_type = array();
$ext = '';
$title = '';
$i = 0;
while ($file_name = readdir($dir_handle)) {
/* Skipping the system files: */
if ($file_name == '.' || $file_name == '..') {
continue;
}
$file_type = \explode('.', $file_name); //This gets the file name of the images
$ext = strtolower(array_pop($file_type));
/* Using the file name (withouth the extension) as a image title: */
$title = implode('.', $file_type);
$title = htmlspecialchars($title);
/* If the file extension is allowed: */
if (in_array($ext, $allowed_types)) {
/* If you would like to inpute images into a database, do your mysql query here */
/* The code past here is the code at the start of the tutorial */
/* Outputting each image: */
$nw = 100;
$nh = 100;
$source = "$desired_dir{$file_name}";
$stype = explode(".", $source);
$stype = $stype[count($stype) - 1];
$dest = "thumb/{$file_name}";
$size = getimagesize($source);
$w = $size[0];
$h = $size[1];
switch ($stype) {
case 'gif':
$simg = imagecreatefromgif($source);
break;
case 'jpg':
$simg = imagecreatefromjpeg($source);
break;
case 'png':
$simg = imagecreatefrompng($source);
break;
}
$dimg = resizePreservingAspectRatio($simg, $nw, $nh);
imagepng($dimg, $dest);
}
}
/* Closing the directory */
closedir($dir_handle);
}
$stmt = $db->prepare('INSERT INTO car (title, brand, model, kmdriven, price, nego, year, addes, sname, smail, sphone) VALUES (:title, :brand, :model, :kmdriven, :price, :nego, :year, :addes, :sname, :smail, :sphone)');
$stmt->execute(array(
':title' => filter_input(INPUT_POST, 'title'),
':brand' => filter_input(INPUT_POST, 'brand'),
':model' => filter_input(INPUT_POST, 'model'),
':kmdriven' => filter_input(INPUT_POST, 'kmdriven'),
':price' => filter_input(INPUT_POST, 'price'),
':nego' => filter_input(INPUT_POST, 'nego'),
':year' => filter_input(INPUT_POST, 'year'),
':addes' => filter_input(INPUT_POST, 'addes'),
':sname' => filter_input(INPUT_POST, 'sname'),
':smail' => filter_input(INPUT_POST, 'smail'),
':sphone' => filter_input(INPUT_POST, 'sphone')
));
function resizePreservingAspectRatio($img, $targetWidth, $targetHeight) {
$srcWidth = imagesx($img);
$srcHeight = imagesy($img);
// Determine new width / height preserving aspect ratio
$srcRatio = $srcWidth / $srcHeight;
$targetRatio = $targetWidth / $targetHeight;
if (($srcWidth <= $targetWidth) && ($srcHeight <= $targetHeight)) {
$imgTargetWidth = $srcWidth;
$imgTargetHeight = $srcHeight;
} else if ($targetRatio > $srcRatio) {
$imgTargetWidth = (int) ($targetHeight * $srcRatio);
$imgTargetHeight = $targetHeight;
} else {
$imgTargetWidth = $targetWidth;
$imgTargetHeight = (int) ($targetWidth / $srcRatio);
}
// Creating new image with desired size
$targetImg = imagecreatetruecolor($targetWidth, $targetHeight);
// Add transparency if your reduced image does not fit with the new size
$targetTransparent = imagecolorallocate($targetImg, 255, 0, 255);
imagefill($targetImg, 0, 0, $targetTransparent);
imagecolortransparent($targetImg, $targetTransparent);
// Copies image, centered to the new one (if it does not fit to it)
imagecopyresampled($targetImg, $img, 0, 0, 0, 0, $targetWidth, $targetHeight, $srcWidth, $srcHeight);
return $targetImg;
}
header('Location: index.php');
exit;
}
?>
答案 0 :(得分：1)
当您编写客户端代码时，当您的表单包含任何enctype="multipart/form-data"元素时，您需要知道的只是<input type="file">。
<form role="form" method="post" action="" enctype="multipart/form-data" autocomplete="on">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
<input type="file" name="files[]" id="upload-image-three" onchange="readURL(this);">
</form>
<?php
require('includes/config.php');
if (!empty($_POST)) {
$newname = md5(rand() * time());
if (isset($_FILES['files'])) {
$uploadedFiles = array();
foreach ($_FILES['files']['tmp_name'] as $key => $tmp_name) {
$errors = array();
$file_name = md5(uniqid("") . time());
$file_size = $_FILES['files']['size'][$key];
$file_tmp = $_FILES['files']['tmp_name'][$key];
$file_type = $_FILES['files']['type'][$key];
if ($file_type == "image/gif") {
$sExt = ".gif";
} elseif ($file_type == "image/jpeg" || $file_type == "image/pjpeg") {
$sExt = ".jpg";
} elseif ($file_type == "image/png" || $file_type == "image/x-png") {
$sExt = ".png";
}
if (!in_array($sExt, array('.gif', '.jpg', '.png'))) {
$errors[] = "Image types alowed are (.gif, .jpg, .png) only!";
}
if ($file_size > 2097152000) {
$errors[] = 'File size must be less than 2 MB';
}
$desired_dir = "upload/";
if (empty($errors)) {
if (is_dir($desired_dir) == false) {
mkdir("$desired_dir", 0700); // Create directory if it does not exist
}
if (move_uploaded_file($file_tmp, "$desired_dir/" . $file_name . $sExt)) {
$uploadedFiles[$key] = array($file_name . $sExt, 1);
} else {
echo "Couldn't upload file " . $_FILES['files']['name'][$key];
$uploadedFiles[$key] = array($_FILES['files']['name'][$key], 0);
}
} else {
}
}
foreach ($uploadedFiles as $key => $row) {
if (!empty($row[1])) {
$codestr = '$file' . ($key + 1) . ' = $row[0];';
eval($codestr);
} else {
$codestr = '$file' . ($key + 1) . ' = NULL;';
eval($codestr);
}
}
}
$orig_directory = "$desired_dir"; //Full image folder
$thumb_directory = "thumb/"; //Thumbnail folder
/* Opening the thumbnail directory and looping through all the thumbs: */
$dir_handle = opendir($orig_directory); //Open Full image dirrectory
if ($dir_handle > 1) { //Check to make sure the folder opened
$allowed_types = array('jpg', 'jpeg', 'gif', 'png');
$file_type = array();
$ext = '';
$title = '';
$i = 0;
while ($file_name = readdir($dir_handle)) {
/* Skipping the system files: */
if ($file_name == '.' || $file_name == '..') {
continue;
}
$file_type = \explode('.', $file_name); //This gets the file name of the images
$ext = strtolower(array_pop($file_type));
/* Using the file name (withouth the extension) as a image title: */
$title = implode('.', $file_type);
$title = htmlspecialchars($title);
/* If the file extension is allowed: */
if (in_array($ext, $allowed_types)) {
/* If you would like to inpute images into a database, do your mysql query here */
/* The code past here is the code at the start of the tutorial */
/* Outputting each image: */
$nw = 100;
$nh = 100;
$source = "$desired_dir{$file_name}";
$stype = explode(".", $source);
$stype = $stype[count($stype) - 1];
$dest = "thumb/{$file_name}";
$size = getimagesize($source);
$w = $size[0];
$h = $size[1];
switch ($stype) {
case 'gif':
$simg = imagecreatefromgif($source);
break;
case 'jpg':
$simg = imagecreatefromjpeg($source);
break;
case 'png':
$simg = imagecreatefrompng($source);
break;
}
$dimg = resizePreservingAspectRatio($simg, $nw, $nh);
imagepng($dimg, $dest);
}
}
/* Closing the directory */
closedir($dir_handle);
}
$stmt = $db->prepare('INSERT INTO car (title, brand, model, kmdriven, price, nego, year, addes, sname, smail, sphone) VALUES (:title, :brand, :model, :kmdriven, :price, :nego, :year, :addes, :sname, :smail, :sphone)');
$stmt->execute(array(
':title' => filter_input(INPUT_POST, 'title'),
':brand' => filter_input(INPUT_POST, 'brand'),
':model' => filter_input(INPUT_POST, 'model'),
':kmdriven' => filter_input(INPUT_POST, 'kmdriven'),
':price' => filter_input(INPUT_POST, 'price'),
':nego' => filter_input(INPUT_POST, 'nego'),
':year' => filter_input(INPUT_POST, 'year'),
':addes' => filter_input(INPUT_POST, 'addes'),
':sname' => filter_input(INPUT_POST, 'sname'),
':smail' => filter_input(INPUT_POST, 'smail'),
':sphone' => filter_input(INPUT_POST, 'sphone')
));
header('Location: index.php');
exit;
}
function resizePreservingAspectRatio($img, $targetWidth, $targetHeight) {
$srcWidth = imagesx($img);
$srcHeight = imagesy($img);
// Determine new width / height preserving aspect ratio
$srcRatio = $srcWidth / $srcHeight;
$targetRatio = $targetWidth / $targetHeight;
if (($srcWidth <= $targetWidth) && ($srcHeight <= $targetHeight)) {
$imgTargetWidth = $srcWidth;
$imgTargetHeight = $srcHeight;
} else if ($targetRatio > $srcRatio) {
$imgTargetWidth = (int) ($targetHeight * $srcRatio);
$imgTargetHeight = $targetHeight;
} else {
$imgTargetWidth = $targetWidth;
$imgTargetHeight = (int) ($targetWidth / $srcRatio);
}
// Creating new image with desired size
$targetImg = imagecreatetruecolor($targetWidth, $targetHeight);
// Add transparency if your reduced image does not fit with the new size
$targetTransparent = imagecolorallocate($targetImg, 255, 0, 255);
imagefill($targetImg, 0, 0, $targetTransparent);
imagecolortransparent($targetImg, $targetTransparent);
// Copies image, centered to the new one (if it does not fit to it)
imagecopyresampled($targetImg, $img, 0, 0, 0, 0, $targetWidth, $targetHeight, $srcWidth, $srcHeight);
return $targetImg;
}
?>