【发布时间】：2016-11-03 01:46:44
【问题描述】：
好的，我有一个基于 ajax 的文件上传，它将文件发送到处理 php 代码。这一切都很好，它返回一个 json_encoded 数组。但是，此数组返回“成功”或“错误”的结果 - 但是，我希望能够实际更改 HTTP 状态代码（目前它们都返回 200 OK，因为它从脚本）。
那么，有没有人有代码允许 PHP 同时发送 http_response_code() 和 json_encoded() 消息？或者可以将我链接到有示例的地方吗？
我已经包含了 process_upload.php 文件的代码，很抱歉长度（大约 130 行） - 接近尾声时我尝试包含 http_status_code(415) 但这没有任何作用.
更新了代码，因为我发现是我误判了触发http_status_code() 的变量在哪里。修复它，它可以工作。
<?php
if (!session_id()) { session_start(); };
require_once('conf/config.php');
require_once('functions.php');
$returnmessage = json_encode(["content"=>"Error Error Error","infotype"=>"error"]);
$changereturnheader = 0;
if ((isset($_SESSION['loggedin']) && $_SESSION['loggedin'] == true) || $allow_public == true) {
if (isset($_FILES['file'])) {
if (in_array('error', $_FILES['file'])) {
switch ($_FILES['file']['error']) {
case 0:
$returnerror = false;
$returnerrorcontent = '';
break;
case 1:
$returnerror = true;
$returnerrorcontent = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';
break;
case 2:
$returnerror = true;
$returnerrorcontent = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form';
break;
case 3:
$returnerror = true;
$returnerrorcontent = 'The uploaded file was only partially uploaded';
break;
case 4:
$returnerror = true;
$returnerrorcontent = 'No file was selected';
break;
case 6:
$returnerror = true;
$returnerrorcontent = 'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3';
break;
case 7:
$returnerror = true;
$returnerrorcontent = 'Failed to write file to disk. Introduced in PHP 5.1.0';
break;
case 8:
$returnerror = true;
$returnerrorcontent = 'A PHP extension stopped the file upload. Introduced in PHP 5.2.0';
break;
default:
$returnerror = false;
$returnerrorcontent = '';
break;
}
}
if (isset($_FILES['file']) && $returnerror == false) {
$allowed = '';
$allowed_extensions = allowedExtensions('');
$totalentries = count(allowedExtensions('')) -1;
for ($i = 0; $i <= $totalentries; $i++) {
$allowed .= (($i == $totalentries) ? $allowed_extensions[$i] : $allowed_extensions[$i].', ');
}
if (($_FILES['file']['size'] + foldersize($userpath.$username) < $storage_limit)) {
if (in_array($_FILES['file']['type'], allowedMimeTypes(''))) {
if (in_array($_FILES['file']['type'], allowedMimeTypes('audio'))) {
$folder = 'music';
} elseif (in_array($_FILES['file']['type'], allowedMimeTypes('image'))) {
$folder = 'pictures';
} elseif (in_array($_FILES['file']['type'], allowedMimeTypes('video'))) {
$folder = 'video';
} elseif (in_array($_FILES['file']['type'], allowedMimeTypes('application'))) {
$folder = 'documents';
} elseif (in_array($_FILES['file']['type'], allowedMimeTypes('text'))) {
$folder = 'documents';
}
$filename = $_FILES['file']['name'];
if (file_exists(''.$userpath.$username.$folder.'/'.onlyValidChar($_FILES['file']['name']))) {
if (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
// echo 'exist';
$returnmessage = json_encode(["content"=>"$filename already exist","infotype"=>"error"]);
}
} else {
move_uploaded_file($_FILES['file']['tmp_name'],''.$userpath.$username.$folder.'/'.onlyValidChar($_FILES['file']['name']));
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
// echo 'uploaded file';
$returnmessage = json_encode(["content"=>"You uploaded $filename","infotype"=>"success"]);
}
$movedfile = pathinfo($_FILES['file']['name']);
if (in_array(strtolower($movedfile['extension']),allowedExtensions('')) && in_array($_FILES['file']['type'],allowedMimeTypes('image'))) {
// createThumbs($userpath.$username.$folder.'/',onlyValidChar($_FILES['file']['name']),200);
generate_image_thumbnail($userpath.$username.$folder.'/'.onlyValidChar($_FILES['file']['name']),$userpath.$username.$folder.'/thumbs/'.onlyValidChar($_FILES['file']['name']));
}
if (in_array(strtolower($movedfile['extension']),allowedExtensions('')) && in_array($_FILES['file']['type'],allowedMimeTypes('video'))) {
$video = $_SERVER['DOCUMENT_ROOT'].'/'.$userpath.$username.$folder.'/'.onlyValidChar($_FILES['file']['name']);
$thumbnail = $_SERVER['DOCUMENT_ROOT'].'/'.$userpath.$username.$folder.'/thumbs/'.onlyValidChar($_FILES['file']['name']).'.jpg';
$get_frames = shell_exec("/usr/local/bin/ffmpeg -nostats -i $video -vcodec copy -f rawvideo -y /dev/null 2>&1 | grep frame | awk '{split($0,a,\"fps\")}END{print a[1]}' | sed 's/.*= *//'");
$stills_number = floor($get_frames / 200);
$output = shell_exec("/usr/local/bin/ffmpeg -y -i $video -frames 1 -q:v 1 -vf 'select=not(mod(n\,$stills_number)),scale=-1:120,tile=100x1' $thumbnail");
}
updateCurrentUploads('current_uploads.php',$_FILES['file']['name']);
}
} else {
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
$changereturnheader = 1;
$returnmessage = json_encode(["content"=>"The filetype you tried to upload is not allowed","infotype"=>"error"]);
}
}
} else {
echo 'exceeding diskspace';
$returnmessage = json_encode(["content"=>"The file will exceed your available diskspace. Delete some of the files already uploaded to make room","infotype"=>"error"]);
}
} elseif ($returnerror == true) {
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
// echo 'error-message return';
$returnmessage = json_encode(["content"=>"$returnerrorcontent","infotype"=>"error"]);
}
} else {
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
// echo 'filetype not allowed 2';
$changereturnheader = 1;
$returnmessage = json_encode(["content"=>"The filetype you tried to upload is not allowed","infotype"=>"error"]);
}
}
}
// echo returnCurrentUploads('current_uploads.php');
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
// echo 'returnmsg';
if ($changereturnheader == 1) {
http_response_code(415);
}
echo $returnmessage;
} else {
header('location: upload');
}
}
?>
【问题讨论】：
标签： php json ajax http-headers