[英]Common causes of server-side issues when using safari and IE
下面的PHP脚本处理表单数据，文本字段，两个文件上传。 该脚本有两个sql语句，在firefox 33.1中，这个脚本完全有效。 脚本在Windows 5.1.7或IE 11的safari中不起作用。 具体来说，它是第二个没有在Saf或IE中运行的sql语句
$sql="UPDATE listings SET listing_img='$listing_img' WHERE id=$this->id"'
这个语句从类外面提取$ this-> id，所以想知道这可能是问题吗？
对于案例UPLOAD_ERR_NO_FILE：（line207），Safari 5.1.7返回true，但事实并非如此，文件确实上传了。
这可能吗？ 为什么浏览器对服务器端的某些东西有任何影响呢？
我应该在js文件中查找问题，或者也可以将错误放在php文件中
现在有没有PHP的safari和IE兼容性的常见原因？
我知道很多问题，漫长的剧本，不是最好的问题，但我迷失在这里。 解决问题的下一个合乎逻辑的步骤是什么？
<?php
//process pdf file upload
$allowedExtsf = array("pdf");
$tempf = explode(".", $_FILES["flyer"]["name"]);
$extensionf = end($tempf);
if (($_FILES["flyer"]["type"] == "application/pdf") && ($_FILES["flyer"]["type"] <2000000000) && in_array($extensionf, $allowedExtsf))
{
if ($_FILES["flyer"]["error"] > 0)
{
echo "Return Code: " . $_FILES["flyer"]["error"] . "<br>";
}
else
{
if (file_exists("../flyers/" . $_FILES["flyer"]["name"]))
{
//if file exists, delete the file on the server
unlink("../flyers/" . $_FILES["flyer"]["name"]);
}
//move currrent pdf to the flyers folder
move_uploaded_file($_FILES["flyer"]["tmp_name"],"../flyers/" . $_FILES["flyer"]["name"]);
//Make url of pdf file
$ad_link="http://www.website.com/flyers/" . $_FILES["flyer"]["name"];
}
//SQL statement 1, insert all form fields, file url and current date time
}
require('../dbcon2.php');
//Connection 1
try {
$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$stmt = $conn->prepare("INSERT INTO listings (title, address, lot_size, zoning, build_size, sale_price, lease_price, comment, transaction, ad_link, date_added) VALUES (:title, :address, :lot_size, :zoning, :build_size, :sale_price, :lease_price, :comment, :transaction, :ad_link, now())");
//Bind
$stmt->bindParam(':title', $_POST['title']);
$stmt->bindParam(':address', $_POST['address']);
$stmt->bindParam(':lot_size', $_POST['lot_size']);
$stmt->bindParam(':zoning', $_POST['zoning']);
$stmt->bindParam(':build_size', $_POST['build_size']);
$stmt->bindParam(':sale_price', $_POST['sale_price']);
$stmt->bindParam(':lease_price', $_POST['lease_price']);
$stmt->bindParam(':comment', $_POST['comment']);
$stmt->bindParam(':transaction', $_POST['transaction']);
$stmt->bindParam(':ad_link', $ad_link);
$stmt->execute();
$last_id = $conn->lastInsertId();
//Create class
class CropAvatar {
private $src;
private $id;
private $data;
private $file;
private $dst;
private $type;
private $extension;
//location to save original image
private $srcDir = '../0images/listimg/orig';
//location to save cropped image
private $dstDir = '../0images/listimg/mod';
private $msg;
//construct
function __construct($src, $data, $file, $last_id) {
$this -> setSrc($src);
$this -> setId($last_id);
$this -> setData($data);
$this -> setFile($file);
$this -> crop($this -> src, $this -> dst, $this -> data, $this -> lastid);
}
private $last_id;
public function setId($last_id) {
$this->id = $last_id;
}
private function setSrc($src)
{
if (!empty($src))
{
$type = exif_imagetype($src);
if ($type)
{
$this -> src = $src;
$this -> type = $type;
$this -> extension = image_type_to_extension($type);
$this -> setDst();
}
}
}
private function setData($data)
{
if (!empty($data))
{
$this -> data = json_decode(stripslashes($data));
}
}
private function setFile($file)
{
$errorCode = $file['error'];
if ($errorCode === UPLOAD_ERR_OK)
{
$type = exif_imagetype($file['tmp_name']);
if ($type)
{
$dir = $this -> srcDir;
if (!file_exists($dir))
{
mkdir($dir, 0777);
}
$currdate=date('YmdHis');
$extension = image_type_to_extension($type);
$src = $dir . '/' . $currdate . $extension;
if ($type == IMAGETYPE_GIF || $type == IMAGETYPE_JPEG || $type == IMAGETYPE_PNG) {
if (file_exists($src))
{
unlink($src);
}
$result = move_uploaded_file($file['tmp_name'], $src);
//Update sql row according to row id with the url of cropped image
$listing_img="http://www.website.com/0images/listimg/mod/" . $currdate . $extension;
$GLOBALS[ 'listing_img' ];
require('../dbcon2.php');
$GLOBALS[ 'last_id' ];
$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql="UPDATE listings SET listing_img='$listing_img' WHERE id=$this->id";
$conn->exec($sql);
$conn = null;
//Error handling
if ($result) {
$this -> src = $src;
$this -> type = $type;
$this -> extension = $extension;
$this -> setDst();
} else {
$this -> msg = 'Failed to save image file';
}
} else {
$this -> msg = 'Please upload image with the following types only: JPG, PNG, GIF';
}
} else {
$this -> msg = 'Please upload image file';
}
} else {
$this -> msg = $this -> codeToMessage($errorCode);
}
}
private function setDst() {
$dir = $this -> dstDir;
if (!file_exists($dir)) {
mkdir($dir, 0777);
}
$this -> dst = $dir . '/' . date('YmdHis') . $this -> extension;
}
private function crop($src, $dst, $data) {
if (!empty($src) && !empty($dst) && !empty($data)) {
switch ($this -> type) {
case IMAGETYPE_GIF:
$src_img = imagecreatefromgif($src);
break;
case IMAGETYPE_JPEG:
$src_img = imagecreatefromjpeg($src);
break;
case IMAGETYPE_PNG:
$src_img = imagecreatefrompng($src);
break;
}
if (!$src_img) {
$this -> msg = "Failed to read the image file";
return;
}
$dst_img = imagecreatetruecolor(220, 220);
$result = imagecopyresampled($dst_img, $src_img, 0, 0, $data -> x, $data -> y, 220, 220, $data -> width, $data -> height);
if ($result) {
switch ($this -> type) {
case IMAGETYPE_GIF:
$result = imagegif($dst_img, $dst);
break;
case IMAGETYPE_JPEG:
$result = imagejpeg($dst_img, $dst);
break;
case IMAGETYPE_PNG:
$result = imagepng($dst_img, $dst);
break;
}
if (!$result) {
$this -> msg = "Failed to save the cropped image file";
}
} else {
$this -> msg = "Failed to crop the image file";
}
imagedestroy($src_img);
imagedestroy($dst_img);
}
}
private function codeToMessage($code) {
switch ($code) {
case UPLOAD_ERR_INI_SIZE:
$message = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';
break;
case UPLOAD_ERR_FORM_SIZE:
$message = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form';
break;
case UPLOAD_ERR_PARTIAL:
$message = 'The uploaded file was only partially uploaded';
break;
case UPLOAD_ERR_NO_FILE:
$message = 'No file was uploaded';
break;
case UPLOAD_ERR_NO_TMP_DIR:
$message = 'Missing a temporary folder';
break;
case UPLOAD_ERR_CANT_WRITE:
$message = 'Failed to write file to disk';
break;
case UPLOAD_ERR_EXTENSION:
$message = 'File upload stopped by extension';
break;
default:
$message = 'Unknown upload error';
}
return $message;
}
public function getResult() {
return !empty($this -> data) ? $this -> dst : $this -> src;
}
public function getMsg() {
return $this -> msg;
}
}
$crop = new CropAvatar($_POST['avatar_src'], $_POST['avatar_data'], $_FILES['avatar_file'], $last_id);
$response = array(
'state' => 200,
'message' => $crop -> getMsg(),
'result' => $crop -> getResult()
);
echo json_encode($response);
}
catch(PDOException $e)
{
echo $sql . "<br>" . $e->getMessage();
}
$conn = null;
?>
回答你的问题：
这可能吗？ 为什么浏览器对服务器端的某些东西有任何影响呢？
不，对于标准的PHP至少不会是这种情况。
解决问题的下一个合乎逻辑的步骤是什么？
您可以调试服务器端脚本，例如，使用NetBeans可以实现什么，并查看服务器为此变量收到的内容。
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