php上传图片之时间戳命名(保存路径),
html代码:
<div id="images" style="width:250px;height:120px;background:#fff;border:1px solid #ccc;"> <h2 id="strong-图片导入-strong"><strong>图片导入</strong></h2> <form enctype="multipart/form-data" action="./includer/importimg.inc.php?action=img" method="post" name="imge"> <input type="hidden" name="MAX_FILE_SIZE" value="100000000" /> <input value="导入文件" type="file" name="img" id="file"/><br/><br/> <input type="submit" id="imgbut" class="buttons" value="上传图片" /> </form> </div>
php代码:
<?php /** *Mwbe Version1.0 *----------------------------------------------- *Copy 2013-2014 ylt *Web: communicate *----------------------------------------------- *Author: tao *Data: 2014-7-22 */ header("Content-Type:text/html;charset=utf-8"); //step 1 使用$_FILES['pic']["error"] 检查错误 if(isset($_GET["action"])=="img"){ if($_FILES["img"]["error"] > 0){ switch($_FILES["img"]["error"]) { case 1: echo "<script type='text/javascript'>alert('上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值<br>');history.back();</script>"; break; case 2: echo "<script type='text/javascript'>alert('上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值');history.back();</script>"; break; case 3: echo "<script type='text/javascript'>alert('文件只有部分被上传');history.back();</script>"; break; case 4: echo "<script type='text/javascript'>alert('没有文件被上传');history.back();</script>"; break; default: echo "<script type='text/javascript'>alert('末知错误');history.back();</script>"; } exit; } $maxsize=2000000; //50k //step 2 使用$_FILES["pic"]["size"] 限制大小 单位字节 2M=2000000 if($_FILES["img"]["size"] > $maxsize ) { echo "<script type='text/javascript'>alert('上传的文件太大,不能超过{$maxsize}字节');history.back();</script>"; exit; } //step 3 使用$_FILES["pic"]["type"]或是文件的扩展名 限制类型 MIME image/gif image/png gif png jpg /* list($dl, $xl) = explode("/", $_FILES["pic"]["type"]); if($dl!="image"){ echo "请上传一个图片,不充许其它类型文件"; exit; } */ $allowtype=array("png", "gif", "jpg", "jpeg"); $arr=explode(".", $_FILES["img"]["name"]); $hz=$arr[count($arr)-1]; if(!in_array($hz, $allowtype)){ echo "<script type='text/javascript'>alert('这是不允许的类型');history.back();</script>"; exit; } //step 4 将让传后的文件名改名 $filepath="../imgweb/"; $fileimgweb="imgweb/";//为了符合UBB的路径 $randname=date("Y").date("m").date("d").date("H").date("i").date("s").rand(100, 999).".".$hz; //将临时位置的文件移动到指定的目录上即可 if(is_uploaded_file($_FILES["img"]["tmp_name"])){ if(move_uploaded_file($_FILES["img"]["tmp_name"],$filepath.$randname)){ echo "<script type='text/javascript'>history.back();</script>"; session_start(); $_SESSION['images'] = $fileimgweb.$randname; }else{ echo "<script type='text/javascript'>alert('上传失败');history.back();</script>"; } }else{ echo"<script type='text/javascript'>alert('不是一个上传文件');history.back();</script>"; } } ?>
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