How to upload avatar in php
php method to implement avatar upload: [
The operating environment of this article: windows10 system, php 7. Thinkpad t480 computer.
I recently needed to use the avatar upload function when working on a project, so I recorded the implementation process.
If we want to complete the avatar upload function, we need a php page, a We define the page as touxiang.php, and the other page as upload.php.
Look at the specific code:
1.touxiang.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <link href="bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet" type="text/css" /> <script src="bootstrap-3.3.7-dist/js/jquery-1.11.2.min.js"></script> <script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script> <style type="text/css"> #yl{ width:200px; height:200px; background-image:url(img/avatar.png); background-size:200px 200px;} #file{ width:200px; height:200px; float:left; opacity:0;} .modal-content{ width:500px;} .kk{ margin-left:130px;} </style> </head> <body> <!-- 按钮触发模态框 --> <button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal"> 上传头像 </button> <!-- 模态框(Modal) --> <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true"> × </button> <h4 class="modal-title" id="myModalLabel"> 上传头像 </h4> </div> <div class="modal-body"> <form id="sc" action="upload.php" method="post" enctype="multipart/form-data" target="shangchuan"> <input type="hidden" name="tp" value="" id="tp" /> <div id="yl" class="kk"> <input type="file" name="file" id="file" onchange="document.getElementById('sc').submit()" /> </div> </form> <iframe style="display:none" name="shangchuan" id="shangchuan"> </iframe> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">关闭 </button> <!--<button type="button" class="btn btn-primary"> 提交更改 </button>--> </div> </div><!-- /.modal-content --> </div><!-- /.modal --> </div> </body> <script type="text/javascript"> //回调函数,调用该方法传一个文件路径,该变背景图 function showimg(url) { var div = document.getElementById("yl"); div.style.backgroundImage = "url("+url+")"; document.getElementById("tp").value = url; } </script> </html>
On this page we need to introduce a modal box and three files: bootstrap.min.css, jquery-1.11.2.min.js, bootstrap.min.js
2.upload.php
<?php if($_FILES["file"]["error"]) { echo $_FILES["file"]["error"]; } else { if(($_FILES["file"]["type"]=="image/jpeg" || $_FILES["file"]["type"]=="image/png")&& $_FILES["file"]["size"]<1024000000) { $fname = "./img/".date("YmdHis").$_FILES["file"]["name"]; $filename = iconv("UTF-8","gb2312",$fname); if(file_exists($filename)) { echo "<script>alert('该文件已存在!');</script>"; } else { move_uploaded_file($_FILES["file"]["tmp_name"],$filename); unlink($_POST["tp"]); echo "<script>parent.showimg('{$fname}');</script>"; } } }
The effect is as follows:
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