我正在尝试将图像从iOS设备发送到php脚本。我在iOS端没有收到错误，所以我认为问题出在我的php脚本上。我是php的新手，请原谅我。这是php脚本：
<?php
$uploaddir = './'; //Uploading to same directory as PHP file
$file = basename($_FILES['userfile']['name']);
$uploadFile = $file;
$randomNumber = rand(0, 99999);
$newName = $uploadDir . $randomNumber . $uploadFile;
if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
echo "Temp file uploaded. \r\n";
} else {
echo "Temp file not uploaded. \r\n";
}
if ($_FILES['userfile']['size']> 300000) {
exit("Your file is too large.");
}
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $newName)) {
$postsize = ini_get('post_max_size'); //Not necessary, I was using these
$canupload = ini_get('file_uploads'); //server variables to see what was
$tempdir = ini_get('upload_tmp_dir'); //going wrong.
$maxsize = ini_get('upload_max_filesize');
echo "http://www.iroboticshowoff.com/dir/{$file}" . "\r\n" . $_FILES['userfile']['size'] . "\r\n" . $_FILES['userfile']['type'] ;
}
?>
如果有人对iOS了解很多，这里是我用来发送图片的代码：
// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:[NSString stringWithString:@"1.0"] forKey:[NSString stringWithString:@"ver"]];
[_params setObject:[NSString stringWithString:@"en"] forKey:[NSString stringWithString:@"lan"]];
// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = [NSString stringWithString:@"----------V2ymHFg03ehbqgZCaKO6jy"];
// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
NSString* FileParamConstant = [NSString stringWithString:@"file"];
// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@"http://myurl.com/upload.php"];
// create request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:30];
[request setHTTPMethod:@"POST"];
// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", BoundaryConstant];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];
// post body
NSMutableData *body = [NSMutableData data];
// add params (all params are strings)
for (NSString *param in _params) {
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}
// add image data
NSData *imageData = UIImageJPEGRepresentation(finalImage, 1.0);
if (imageData) {
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"image.jpg\"\r\n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Type: image/jpeg\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:imageData];
[body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// set the content-length
NSString *postLength = [NSString stringWithFormat:@"%d", [body length]];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
// set URL
[request setURL:requestURL];
我在stackoverflow上发现了这两个，但根据我的理解，iOS工作正常，php应该将照片放在我服务器的根目录中。
答案 0 :(得分：2)
$_FILES数组包含许多有用的信息。您可以（并且应该）使用var_dump()打印出内容。这是一个用于上传文件的脚本。也许你可以根据自己的需要调整设计。
<?php // RAY_upload_example.php
error_reporting(E_ALL);
// MANUAL REFERENCE PAGES YOU MUST UNDERSTAND TO UPLOAD FILES
// http://php.net/manual/en/features.file-upload.php
// http://php.net/manual/en/features.file-upload.common-pitfalls.php
// http://php.net/manual/en/function.move-uploaded-file.php
// http://php.net/manual/en/reserved.variables.files.php
// MANUAL PAGES THAT ARE IMPORTANT IF YOU ARE DEALING WITH LARGE FILES
// http://php.net/manual/en/ini.core.php#ini.upload-max-filesize
// http://php.net/manual/en/ini.core.php#ini.post-max-size
// http://php.net/manual/en/info.configuration.php#ini.max-input-time
// PHP 5.1+ SEE http://php.net/manual/en/function.date-default-timezone-set.php
date_default_timezone_set('America/Chicago');
// ESTABLISH THE NAME OF THE 'uploads' DIRECTORY (MUST ALREADY EXIST)
$uploads = 'RAY_junk';
// ESTABLISH THE BIGGEST FILE SIZE WE CAN ACCEPT - ABOUT 8 MB
$max_file_size = '8000000';
// ESTABLISH THE MAXIMUM NUMBER OF FILES WE CAN UPLOAD
$nf = 3;
// ESTABLISH THE KINDS OF FILE EXTENSIONS WE CAN ACCEPT
$file_exts = array
( 'jpg'
, 'gif'
, 'png'
, 'txt'
, 'pdf'
)
;
// LIST OF THE ERRORS THAT MAY BE REPORTED IN $_FILES[]["error"] (THERE IS NO #5)
$errors = array
( 0 => "Success!"
, 1 => "The uploaded file exceeds the upload_max_filesize directive in php.ini"
, 2 => "The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form"
, 3 => "The uploaded file was only partially uploaded"
, 4 => "No file was uploaded"
, 5 => "UNDEFINED ERROR"
, 6 => "Missing a temporary folder"
, 7 => "Cannot write file to disk"
)
;
// IF THERE IS NOTHING IN $_POST, PUT UP THE FORM FOR INPUT
if (empty($_POST))
{
?>
<h2>Upload <?php echo $nf; ?> file(s)</h2>
<!--
SOME THINGS TO NOTE ABOUT THIS FORM...
ENCTYPE IN THE HTML <FORM> STATEMENT
MAX_FILE_SIZE MUST PRECEDE THE FILE INPUT FIELD
INPUT NAME= IN TYPE=FILE DETERMINES THE NAME YOU FIND IN $_FILES ARRAY
ABSENCE OF ACTION= ATTRIBUTE IN FORM TAG CAUSES POST TO SAME URL
-->
<form name="UploadForm" enctype="multipart/form-data" method="post">
<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $max_file_size; ?>" />
<p>
Find the file(s) you want to upload and click the "Upload" button below.
</p>
<?php // CREATE INPUT STATEMENTS FOR UP TO $n FILE NAMES
for ($n = 0; $n < $nf; $n++)
{
echo "<input name=\"userfile$n\" type=\"file\" size=\"80\" /><br/>\n";
}
?>
<br/>Check this box <input autocomplete="off" type="checkbox" name="overwrite" /> to <strong>overwrite</strong> existing files.
<input type="submit" value="Upload" />
</form>
<?php
die();
}
// END OF THE FORM SCRIPT
// WE HAVE GOT SOMETHING IN $_POST - RUN THE ACTION SCRIPT
else
{
// THERE IS POST DATA - PROCESS IT
echo "<h2>Results: File Upload</h2>\n";
// ACTIVATE THIS TO SEE WHAT IS COMING THROUGH
// echo "<pre>"; var_dump($_FILES); var_dump($_POST); echo "</pre>\n";
// ITERATE OVER THE CONTENTS OF $_FILES
foreach ($_FILES as $my_uploaded_file)
{
// SKIP OVER EMPTY SPOTS - NOTHING UPLOADED
$error_code = $my_uploaded_file["error"];
if ($error_code == 4) continue;
// SYNTHESIZE THE NEW FILE NAME
$f_type = trim(strtolower(end (explode( '.', basename($my_uploaded_file['name'] )))));
$f_name = trim(strtolower(current(explode( '.', basename($my_uploaded_file['name'] )))));
$my_new_file
= getcwd()
. DIRECTORY_SEPARATOR
. $uploads
. DIRECTORY_SEPARATOR
. $f_name
. '.'
. $f_type
;
$my_file
= $uploads
. DIRECTORY_SEPARATOR
. $f_name
. '.'
. $f_type;
// OPTIONAL TEST FOR ALLOWABLE EXTENSIONS
if (!in_array($f_type, $file_exts)) die("Sorry, $f_type files not allowed");
// IF THERE ARE ERRORS
if ($error_code != 0)
{
$error_message = $errors[$error_code];
die("Sorry, Upload Error Code: $error_code: $error_message");
}
// GET THE FILE SIZE
$file_size = number_format($my_uploaded_file["size"]);
// IF THE FILE IS NEW (DOES NOT EXIST)
if (!file_exists($my_new_file))
{
// IF THE MOVE FUNCTION WORKED CORRECTLY
if (move_uploaded_file($my_uploaded_file['tmp_name'], $my_new_file))
{
$upload_success = 1;
}
// IF THE MOVE FUNCTION FAILED
else
{
$upload_success = -1;
}
}
// IF THE FILE ALREADY EXISTS
else
{
echo "<br/><b><i>$my_file</i></b> already exists.\n";
// SHOULD WE OVERWRITE THE FILE? IF NOT
if (empty($_POST["overwrite"]))
{
$upload_success = 0;
}
// IF WE SHOULD OVERWRITE THE FILE, TRY TO MAKE A BACKUP
else
{
$now = date('Y-m-d');
$my_bak = $my_new_file . '.' . $now . '.bak';
if (!copy($my_new_file, $my_bak))
{
echo "<br/><strong>Attempted Backup Failed!</strong>\n";
}
if (move_uploaded_file($my_uploaded_file['tmp_name'], $my_new_file))
{
$upload_success = 2;
}
else
{
$upload_success = -1;
}
}
}
// REPORT OUR SUCCESS OR FAILURE
if ($upload_success == 2) { echo "<br/>It has been overwritten.\n"; }
if ($upload_success == 1) { echo "<br/><strong>$my_file</strong> has been saved.\n"; }
if ($upload_success == 0) { echo "<br/><strong>It was NOT overwritten.</strong>\n"; }
if ($upload_success < 0) { echo "<br/><strong>ERROR: $my_file NOT SAVED - SEE WARNING FROM move_uploaded_file() COMMAND</strong>\n"; }
if ($upload_success > 0)
{
echo "$file_size bytes uploaded.\n";
if (!chmod ($my_new_file, 0755))
{
echo "<br/>chmod(0755) FAILED: fileperms() = ";
echo substr(sprintf('%o', fileperms($my_new_file)), -4);
}
echo "<br/><a target=\"_blank\" href=\"$my_file\">See the file $my_file</a>\n";
}
// END FOREACH ITERATOR - EACH ITERATION PROCESSES ONE FILE
}
}