$ _FILES undefined PHP上传表单。无法弄清楚 [英] $_FILES undefined PHP upload form. Can't figure out
问题描述
我为图像做了一个php上传表单。它使用会话变量来确定上传目录。有两个选项，上传，滑块目录或侧目录，所以我有一个if语句，确定目录。如果我从表单中删除这个，那么整个事情就可以正常工作，但是$ _FILES似乎没有被声明，并且返回一个未定义的索引错误。
代码可以发现如下：
upload.php
< ;？php
include（resize-class.php）;
$ allowedExt = array（'jpg'，'jpeg'，'JPG'，'JPEG'）;
$ tmps = explode（。，$ _FILES ['file'] ['name']）;
$ extension = end（$ tmps）;
session_start（）;
if（$ _POST ['dir'] =='side'）{
$ dirent = $ _SESSION ['sideDir'];
else if（$ _ POST ['dir'] =='slider'）{
$ dirent = $ _SESSION ['sliderDIR'];
}
else {
die（）;
}
echo $ _POST ['dir'];
print_r（$ _ FILES）; $（$ _FILES [file] [type] ==image / jpeg）&&（$ _FILES [file] [size]< （$ _FILES [file] [error]> 0）{
echoError：。 $ _FILES [file] [error]。 < br />;
echo'here';
} else {
echoUpload：。 $ _FILES [file] [name]。 < br />;
回显类型：。 $ _FILES [file] [type]。 < br /> \\\
;
回声大小：。 （$ _FILES [file] [size] / 1024）。 Kb> \\\
;
回声存储在：。 $ _FILES [ 文件] [ tmp_name的值。 < br /> \\\
; （file_exists（$ dirent。$ _FILES [file] [name]））{
echo $ _FILES [file] [name
]。 已经存在;
} else {
$ fName = $ _FILES [file] [name];
$ tmpname = $ _FILES [file] [tmp_name];
move_uploaded_file（$ _ FILES [file] [tmp_name]，$ dirent。$ _FILES [file] [name]）;
$ number = FileCounter（$ dirent）;
回显DIR中的图像数目：。 $号。 < br /> \\\
;
$ number +1;
$ resizeObj = new resize（$ dirent。$ fName）;
$ resizeObj - > resizeImage（250,150，'crop'）;
$ resizeObj - > saveImage（$ dirent。$ number。。jpg，100）;
unlink（$ dirent。$ _ FILES [file] [name]）;
}
} else {
echoError：。 $ _FILES [file] [error]。 < br />;
}
函数FileCounter（$ dir）{
$ counter = 0;
$ iterator = new DirectoryIterator（dirname（$ dir））;
foreach（$ iterator as $ fileinfo）{
if（$ fileinfo-> isFile（））{
if（$ fileinfo-> getExtension（）==jpg）{
$ counter ++;
echo $计数器。 \\\
;
}
}
}
return $ counter;
}
？>
HTML FORM：
< form action =includes / upload.phpmethod =post>
< label for =file>文件名：< / label>
< input type =filename =fileid =file/>
< div class =style-select>
< label for =dir>上传到：< / label>
< select size =2name =dirmultiple =yesid =dir>
< option value =side> Side Images< / option>
< option value =slider> Slider Images< / option>
< / select>
< / div>
< br />
< input type =submitname =submitvalue =Submit/>
< / form>
我猜测我的代码中有一个非常愚蠢的错误，一直盯着它一个小时，或者有一些我不知道$ _FILES和$ _POST。 （或可能我已经编码形式像一个白痴！）。
您的表单丢失
enctype =multipart / form-data
Possible Duplicate:
Getting ‘undefined index’ error while trying to use $_FILE in PHP
I have made a php upload form for images. It uses session variables to determine the upload directory. There are two options for the uploads, the slider dir or the side dir so I have an if statement that determines the directory. If i remove this from the form then the whole thing works ok however with it in, $_FILES seems to not be declared and returns as an undefined index error.
The code can be found is as follows:
upload.php
<?php
include("resize-class.php");
$allowedExt = array('jpg', 'jpeg', 'JPG', 'JPEG');
$tmps = explode(".", $_FILES['file']['name']);
$extension = end($tmps);
session_start();
if ($_POST['dir'] == 'side'){
$dirent = $_SESSION['sideDir'];
}
else if($_POST['dir'] == 'slider'){
$dirent = $_SESSION['sliderDIR'];
}
else{
die();
}
echo $_POST['dir'];
print_r($_FILES);
if (($_FILES["file"]["type"] == "image/jpeg")&& ($_FILES["file"]["size"] < 4000000000)&& in_array($extension, $allowedExt)) {
if ($_FILES["file"]["error"] > 0) {
echo "Error: " . $_FILES["file"]["error"] . "<br />";
echo 'here';
} else {
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . " <br />\n";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br /> \n";
echo "Stored in: " . $_FILES["file"]["tmp_name"]. "<br />\n";
}
if (file_exists($dirent. $_FILES["file"]["name"])) {
echo $_FILES["file"]["name"] . "already exists";
} else {
$fName = $_FILES["file"]["name"];
$tmpname = $_FILES["file"]["tmp_name"];
move_uploaded_file($_FILES["file"]["tmp_name"], $dirent . $_FILES["file"]["name"]);
$number = FileCounter($dirent);
echo "Number of images in DIR: " . $number. " <br />\n ";
$number +1;
$resizeObj = new resize($dirent.$fName);
$resizeObj -> resizeImage(250, 150, 'crop');
$resizeObj -> saveImage($dirent.$number.".jpg", 100);
unlink ($dirent.$_FILES["file"]["name"]);
}
} else {
echo "Error: " . $_FILES["file"]["error"] . "<br />";
}
function FileCounter($dir) {
$counter = 0;
$iterator = new DirectoryIterator(dirname($dir));
foreach ($iterator as $fileinfo) {
if ($fileinfo->isFile()) {
if ($fileinfo->getExtension() == "jpg") {
$counter++;
echo $counter . "\n";
}
}
}
return $counter;
}
?>
HTML FORM:
<form action="includes/upload.php" method="post">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<div class="styled-select">
<label for="dir"> Upload to:</label>
<select size="2" name="dir" multiple="yes" id="dir">
<option value="side" >Side Images</option>
<option value="slider" >Slider Images</option>
</select>
</div>
<br />
<input type="submit" name="submit" value="Submit" />
</form>
I am guessing that there is either a really stupid error in my code that I am overlooking as I have been staring at it for an hour now or that there is something that I do not know about $_FILES and $_POST. (or possibly I have coded the form like a moron!).
Your form is missing
enctype="multipart/form-data"
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