The effect is as follows:
1. Upload interface:
2. After successful upload
3. Files received in the background
The code is very simple:
1, html and js part:
<!DOCTYPE html> <html> <head> <title>Html5 Ajax 上传文件</title> <meta charset="utf-8"> <script type="text/javascript"> var xhr; function createXMLHttpRequest() { if (window.ActiveXObject) { xhr = new ActiveXObject("Microsoft.XMLHTTP"); } else if (window.XMLHttpRequest) { xhr = new XMLHttpRequest(); } } function UpladFile() { var fileObj = document.getElementById("file").files[0]; var FileController = 'doajaxfileupload.php'; var form = new FormData(); form.append("myfile", fileObj); createXMLHttpRequest(); xhr.onreadystatechange = handleStateChange; xhr.open("post", FileController, true); xhr.send(form); } function handleStateChange() { if (xhr.readyState == 4) { if (xhr.status == 200 || xhr.status == 0) { var result = xhr.responseText; var json = eval("(" + result + ")"); alert('图片链接:\n' + json.file); } } } </script> <!--<style> .txt{ height:28px; border:1px solid #cdcdcd; width:670px;} .mybtn{ background-color:#FFF; line-height:14px;vertical-align:middle;border:1px solid #CDCDCD;height:30px; width:70px;} .file{ position:absolute; top:0; right:80px; height:24px; filter:alpha(opacity:0);opacity: 0;width:260px } </style>--> </head> <body> <div class="form-group"> <label class="control-label">图片</label> <br/> <input type='text' name='textfield' id='textfield' class='txt' /> <span class="mybtn">浏览...</span> <input type="file" name="file" class="file" id="file" size="28" /> <span class="mybtn">上传</span> </div> </body> </html>
<?php if(isset($_FILES["myfile"])) { $ret = array(); //$uploadDir = 'images'.DIRECTORY_SEPARATOR.date("Ymd").DIRECTORY_SEPARATOR; $uploadDir = 'uploads'.DIRECTORY_SEPARATOR; $dir = dirname(__FILE__).DIRECTORY_SEPARATOR.$uploadDir; file_exists($dir) || (mkdir($dir,0777,true) && chmod($dir,0777)); if(!is_array($_FILES["myfile"]["name"])) //single file { //$fileName = time().uniqid().'.'.pathinfo($_FILES["myfile"]["name"])['extension']; $fileName = $_FILES["myfile"]["name"]; move_uploaded_file($_FILES["myfile"]["tmp_name"],$dir.$fileName); $ret['file'] = DIRECTORY_SEPARATOR.$uploadDir.$fileName; } echo json_encode($ret); } ?>
The above introduces the simple implementation of PHP+ajax image upload, including image upload and ajax content. I hope it will be helpful to friends who are interested in PHP tutorials.