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    <p>After looking for an solution a long time (lot of posts without real solution), i now fixed the code myself. I'm now able to upload an image to my own server. Thx to firebug and eclipse ;-)</p> <p>The main problem is that the nicUpload.php is old and not working with the current nicEdit-Upload function.</p> <p><em>Missing is the error handling, feel free to add this...</em></p> <p>Add the <strong>nicEditor to your php file and configure it</strong> to use the nicEdit.php:</p> <pre><code>new nicEditor({iconsPath : 'pics/nicEditorIcons.gif', uploadURI : 'script/nicUpload.php'} </code></pre> <p>Download the <strong>nicEdit.js uncompressed</strong> and change the following lines in nicEdit.js: </p> <pre><code>uploadFile : function() { var file = this.fileInput.files[0]; if (!file || !file.type.match(/image.*/)) { this.onError("Only image files can be uploaded"); return; } this.fileInput.setStyle({ display: 'none' }); this.setProgress(0); var fd = new FormData(); fd.append("image", file); fd.append("key", "b7ea18a4ecbda8e92203fa4968d10660"); var xhr = new XMLHttpRequest(); xhr.open("POST", this.ne.options.uploadURI || this.nicURI); xhr.onload = function() { try { var res = JSON.parse(xhr.responseText); } catch(e) { return this.onError(); } //this.onUploaded(res.upload); // CHANGE HERE this.onUploaded(res); }.closure(this); xhr.onerror = this.onError.closure(this); xhr.upload.onprogress = function(e) { this.setProgress(e.loaded / e.total); }.closure(this); xhr.send(fd); </code></pre> <p>},</p> <pre><code>onUploaded : function(options) { this.removePane(); //var src = options.links.original; // CHANGE HERE var src = options['url']; if(!this.im) { this.ne.selectedInstance.restoreRng(); //var tmp = 'javascript:nicImTemp();'; this.ne.nicCommand("insertImage", src); this.im = this.findElm('IMG','src', src); } var w = parseInt(this.ne.selectedInstance.elm.getStyle('width')); if(this.im) { this.im.setAttributes({ src : src, width : (w &amp;&amp; options.image.width) ? Math.min(w, options.image.width) : '' }); } </code></pre> <p>}</p> <p><strong>Change the nicUpload.php like this</strong></p> <pre><code>&lt;?php /* NicEdit - Micro Inline WYSIWYG * Copyright 2007-2009 Brian Kirchoff * * NicEdit is distributed under the terms of the MIT license * For more information visit http://nicedit.com/ * Do not remove this copyright message * * nicUpload Reciever Script PHP Edition * @description: Save images uploaded for a users computer to a directory, and * return the URL of the image to the client for use in nicEdit * @author: Brian Kirchoff &lt;briankircho@gmail.com&gt; * @sponsored by: DotConcepts (http://www.dotconcepts.net) * @version: 0.9.0 */ /* * @author: Christoph Pahre * @version: 0.1 * @description: different modification, so that this php file is working with the newest nicEdit.js (needs also modification - @see) * @see http://stackoverflow.com/questions/11677128/nicupload-says-invalid-upload-id-cant-make-it-works */ define('NICUPLOAD_PATH', '../images/uploadedImages'); // Set the path (relative or absolute) to // the directory to save image files define('NICUPLOAD_URI', '../images/uploadedImages'); // Set the URL (relative or absolute) to // the directory defined above $nicupload_allowed_extensions = array('jpg','jpeg','png','gif','bmp'); if(!function_exists('json_encode')) { die('{"error" : "Image upload host does not have the required dependicies (json_encode/decode)"}'); } if($_SERVER['REQUEST_METHOD']=='POST') { // Upload is complete $file = $_FILES['image']; $image = $file['tmp_name']; $id = $file['name']; $max_upload_size = ini_max_upload_size(); if(!$file) { nicupload_error('Must be less than '.bytes_to_readable($max_upload_size)); } $ext = strtolower(substr(strrchr($file['name'], '.'), 1)); @$size = getimagesize($image); if(!$size || !in_array($ext, $nicupload_allowed_extensions)) { nicupload_error('Invalid image file, must be a valid image less than '.bytes_to_readable($max_upload_size)); } $filename = $id; $path = NICUPLOAD_PATH.'/'.$filename; if(!move_uploaded_file($image, $path)) { nicupload_error('Server error, failed to move file'); } $status = array(); $status['done'] = 1; $status['width'] = $size[0]; $rp = realpath($path); $status['url'] = NICUPLOAD_URI ."/".$id; nicupload_output($status, false); exit; } // UTILITY FUNCTIONS function nicupload_error($msg) { echo nicupload_output(array('error' =&gt; $msg)); } function nicupload_output($status, $showLoadingMsg = false) { $script = json_encode($status); $script = str_replace("\\/", '/', $script); echo $script; exit; } function ini_max_upload_size() { $post_size = ini_get('post_max_size'); $upload_size = ini_get('upload_max_filesize'); if(!$post_size) $post_size = '8M'; if(!$upload_size) $upload_size = '2M'; return min( ini_bytes_from_string($post_size), ini_bytes_from_string($upload_size) ); } function ini_bytes_from_string($val) { $val = trim($val); $last = strtolower($val[strlen($val)-1]); switch($last) { // The 'G' modifier is available since PHP 5.1.0 case 'g': $val *= 1024; case 'm': $val *= 1024; case 'k': $val *= 1024; } return $val; } function bytes_to_readable( $bytes ) { if ($bytes&lt;=0) return '0 Byte'; $convention=1000; //[1000-&gt;10^x|1024-&gt;2^x] $s=array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB'); $e=floor(log($bytes,$convention)); return round($bytes/pow($convention,$e),2).' '.$s[$e]; } ?&gt; </code></pre>
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