我有一个上传图片的 PHP 脚本（如下所列）。但是，当上传图像时，它默认为 640 9so 在网络浏览器中被禁止），我需要将其上传为 644。有没有人对如何实现这一点有任何建议？
非常感谢，达伦
<?php
class upload
{
/**
* the maximum file size allowed
*/
var $maxFileSize;
/**
* array of valid file extensions
*/
var $validExts;
/**
* directory to upload files to
*/
var $uploadDir;
/**
* name of the file uploaded
*/
var $fileName;
/**
* temporary file name
*/
var $tempFileName;
/**
* name of the file when uploaded
*/
var $uploadedFileName;
/**
* current file size
*/
var $fileSize;
/**
* current file extension
*/
var $fileExt;
/**
* last known error
*/
var $error;
/**
* class constructor
* @return NULL
*/
function upload () {
$this->setValidExts = array(".jpg", ".gif");
}
/**
* set the valid extensions
* @return boolean
*/
function setValidExts ($exts) {
$this->validExts = array();
if (is_array($exts) && sizeof($exts) > 0) {
$this->validExts = $exts;
}
return TRUE;
}
/**
* set a filename
* @return
*/
function setFileName ($name, $ufn = FALSE) {
$this->fileName = "";
if (strlen($name) > 0) {
$this->fileName = $name;
if ($ufn) {
$this->setUploadFileName($name);
}
}
}
/**
* set the uploaded filename
* @return
*/
function setUploadedFileName ($name) {
$this->uploadedFileName = "";
if (strlen($name) > 0) {
$this->uploadedFileName = $name;
}
}
/**
* set the temporary file name
* @return
*/
function setTempFileName ($name) {
$this->tempFileName = "";
if (strlen($name) > 0) {
$this->tempFileName = $name;
}
}
/**
* set the maximum file size
* @return
*/
function setMaxFileSize ($size = 0) {
$this->maxFileSize = intval($size);
}
/**
* set the upload directory
* @return boolean
*/
function setUploadDir ($dir) {
$dir = $dir;
if (is_dir($dir)) {
$this->uploadDir = $dir;
return TRUE;
}
return FALSE;
}
/**
* validate the extension of the uploaded file
* @return boolean
*/
function validateExt () {
$this->fileExt = strtolower(strrchr($this->fileName, "."));
if (sizeof($this->validExts) == 0) {
return TRUE;
}
foreach ($this->validExts AS $key => $value) {
if ($value == $this->fileExt) {
return TRUE;
}
}
return FALSE;
}
/**
* validate the size of the file
* @return boolean
*/
function validateSize () {
$this->fileSize = filesize($this->tempFileName);
if ($this->fileSize <= $this->maxFileSize || $this->fileSize == 0) {
return TRUE;
}
return FALSE;
}
/**
* validate the upload directory
* @return boolean
*/
function validateUploadDir () {
if (is_writable($this->uploadDir)) {
return TRUE;
}
$this->error = $this->uploadDir. " is not writeable";
return FALSE;
}
/**
* check the error code
* @return boolean
*/
function checkError () {
switch ($_FILES['error'])
{
case UPLOAD_ERR_OK:
return TRUE;
break;
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
case UPLOAD_ERR_PARTIAL:
case UPLOAD_ERR_NO_FILE:
case UPLOAD_ERR_NO_TMP_DIR:
default:
return FALSE;
break;
}
}
/**
* the upload function
* @return boolean
*/
function uploadFile () {
if (!$this->checkError()) {
return FALSE;
}
if ($this->validateUploadDir() && $this->validateExt()) {
if (is_uploaded_file($this->tempFileName)) {
if (move_uploaded_file($this->tempFileName, $this->uploadDir . $this->uploadedFileName . $this->fileExt)) {
return TRUE;
}
}
}
return FALSE;
}
/**
* resize an image
* @return
*/
function thumbnail ($filename, $new_w, $new_h) {
$filename = $this->uploadDir . $filename . $this->fileExt;
if (preg_match('/jpg|jpeg/', $this->fileExt)) {
$src_img = @imagecreatefromjpeg($this->uploadDir . $this->uploadedFileName . $this->fileExt);
} elseif (preg_match('/gif/', $this->fileExt)) {
$src_img = @imagecreatefromgif($this->uploadDir . $this->uploadedFileName . $this->fileExt);
}
// get image details
list($old_x, $old_y) = getimagesize($this->uploadDir . $this->uploadedFileName . $this->fileExt);
// create new imge
$dst_img = imagecreatetruecolor($new_w,$new_h);
imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h, $old_x, $old_y);
// save the new image
if (preg_match('/jpg|jpeg/', $this->fileExt)) {
@imagejpeg($dst_img, $filename);
} elseif (preg_match('/gif/', $this->fileExt)) {
@imagegif($dst_img, $filename);
}
// memory saving
imagedestroy($dst_img);
imagedestroy($src_img);
return TRUE;
}
/**
* delete an image
* @access public
* @return boolean
*/
function deleteImage ($name) {
for ($i = 0; $i < (sizeof($this->validExts) - 1); $i++) {
@unlink($this->uploadDir.$name.$this->validExts[$i]);
}
return TRUE;
}
}
?>