美好的一天)我正在构建一个WordPress插件LMS,允许用户通过AJAX将他们完成的家庭作业文件附加到他们的答案中。一切正常,除了一个场景,当用户的文件超过允许的最大大小。在这种情况下我的AJAX调用返回的HTML具有以下警告:很好地处理“POST内容 - 字节长度超过了限制”警告
<b>Warning</b>: POST Content-Length of XXXXX bytes exceeds the limit of XXXXX bytes in <b>Unknown</b> on line <b>0</b><br />
由于我的脚本的字符串0产生这种警告,它会死,而忽略任何其他指令,留下我这个丑陋的字符串作为的结果我的电话。 你基本上可以忍受它,因为最终用户不会看到它(只是AJAX调用不会有期望的结果),但仍然我想知道是否有机会跳过它并很好地处理它?
好,什么样的研究,我已经做了:
我发现this教程由安德鲁Curioso,并设法使从它的东西是这样的:
if (isset($_SERVER['CONTENT_LENGTH'])) { if ($_SERVER['CONTENT_LENGTH'] > (substr(ini_get('post_max_size'), -1) * 1024 * 1024)) { echo 'php errors is so much fun'; } }
它没有提供预期的效果,因为我的脚本仍然只会从IF语句中回显附加字符串的正面效果而死亡(此外,如果您尝试执行类似wp_send_jso n(errorsArray),它不会被执行)。
使用display_errors,error_reporting关闭显示错误。那么,这不是我需要的,因为它仍然不允许我继续使用脚本并创建自定义错误处理程序。什么样的建议,我不是在寻找手动编辑max_upload_size,max_post_size等作为手动编辑服务器上的文件是外挂程式理念
我WP_DEBUG设置为FALSE
。无论如何,即使您将最大上传大小设置为10GB,只要最终用户尝试上传11GB。我们都知道,这个机制是在成千上万个网站和应用程序上实现的,我想知道如何最大限度地提高脚本质量,处理这个问题而不会过度使用和损坏用户体验。
感谢分享您的想法:)
UPD1 这里是我的AJAX调用,如果有帮助:
$('#post-assignment-answer').on('click', function (event) {
event.preventDefault();
tinymce.triggerSave();
var answerContent = tinymce.get('assignment_user_input_textarea').getContent();
var answerFile = $('#assignment-file-upload')[0].files[0];
var formData = new FormData();
formData.append('action', 'post_assignment_answer');
formData.append('security', lucid_single_assignment_params.post_assignment_answer_nonce);
formData.append('post_id', lucid_single_assignment_params.post_id);
formData.append('answer_content', answerContent);
formData.append('answer_file', answerFile);
$.ajax({
url: lucid_single_assignment_params.ajax_url,
type: 'post',
data: formData,
contentType: false,
processData: false,
success: function (result) {
console.log(result);
}
});
});
UPD2: 添加了Ajax处理PHP
<?php
/**
* Post Assignment Answer
*
* @version 1.0.0
*/
if (! defined('ABSPATH')) {
exit;
} // Exit if accessed directly
// Create AJAX call $result
$result = array(
'fileTypeError' => false,
'fileSizeError' => false,
'uploadError' => false
);
// Retrieving current post ID
$post_id = $_POST['post_id'];
// Retrieving WYSIWYG content
$answer_content = '';
if (! (trim($_POST['answer_content']) == '')) {
$answer_content = wp_kses_post($_POST['answer_content']);
}
// Updating WYSIWYG meta field
update_post_meta($post_id, '_answer_content', $answer_content);
// Check if user intends to upload a file
if (!empty($_FILES['answer_file'])) {
// Adding timestamp to file name
$_FILES['answer_file']['name'] = round(microtime(true)) . '_' . $_FILES['answer_file']['name'];
$answer_file = $_FILES['answer_file'];
// Setting up uploaded file type validation
$supported_types = array(
'text/plain' // .txt
);
$arr_file_type = wp_check_filetype(basename($answer_file['name']));
$uploaded_type = $arr_file_type['type'];
// Setting up uploaded file size validation // TODO: This should be optimized
$allowed_size = 8388608;
$uploaded_size = $answer_file['size'];
// Validating, and in a case of success completing upload
if (!in_array($uploaded_type, $supported_types)) {
$result['fileTypeError'] = __('The type of file you\'ve provided is not allowed', 'lucidlms');
} elseif ($uploaded_size > $allowed_size) {
$result['fileSizeError'] = __('The size of file you\'ve provided is exceeding the maximum upload size', 'lucidlms');
} else {
/**
* Override the default upload path.
*
* @param array $dir
* @return array
*/
function lucidlms_assignment_upload_dir($dir) {
global $user_ID;
return array(
'path' => $dir['basedir'] . '/lucidlms/assignment/user' . $user_ID,
'url' => $dir['baseurl'] . '/lucidlms/assignment/user' . $user_ID,
'subdir' => ''
) + $dir;
}
// Register path override
add_filter('upload_dir', 'lucidlms_assignment_upload_dir');
$upload = wp_handle_upload($answer_file, array('test_form' => false));
// Set everything back to normal
remove_filter('upload_dir', 'lucidlms_user_upload_dir');
if (isset($upload['error']) && $upload['error'] != 0) {
$result['uploadError'] = sprintf(__('There was an error uploading your file. The error is: %s', 'lucidlms'), $upload['error']);
} else {
// Check if there is an old version of file on the server and delete it
$existing_answer_file = get_post_meta($post_id, '_answer_file', true);
if (! empty($existing_answer_file)) {
global $user_ID;
$upload_dir = wp_upload_dir();
$existing_answer_file_name = pathinfo($existing_answer_file['file'], PATHINFO_BASENAME);
$unlink_path = $upload_dir['basedir'] . '/lucidlms/assignment/user' . $user_ID . '/' . $existing_answer_file_name;
unlink($unlink_path);
}
// Updating post meta
update_post_meta($post_id, '_answer_file', $upload);
}
}
}
wp_send_json($result);
非常方便,谢谢。开始附近有一个小错误 - 'substr(ini_get('post_max_size'),-1)'应该是'substr(ini_get('post_max_size'),0,-1)'。 –