文件上传案例
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>文件上传简述</title>
</head>
<body>
<form action="a.php" method="post" enctype="multipart/form-data">
<p>
<input type="file" name="pic">
</p>
<p>
<input type="submit" name="submit" value="提交">
</p>
</form>
</body>
</html>
处理上传文件a.php
<?php include('./func.php'); if(is_file($_FILES['pic']['tmp_name']) && $_FILES['pic']['error'] == 0){ $des = createDir().'/'.randStr().getExt($_FILES['pic']['name']); $data = move_uploaded_file($_FILES['pic']['tmp_name'],$des); }else{ echo '上传文件为空'; } ?>
涉及的自定义函数
<?php /** * 按日期创建存储目录 */ function createDir(){ $path = './upload/'.date('Y/md'); if(is_dir($path) || mkdir($path,0777,true)){ return $path; }else{ return false; } } /** * 生成随机字符串 */ function randStr($length=6){ $str = str_shuffle('ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjklmnpqrstuvwxyz23456789'); $str = substr($str,0,$length); return $str; } /** * 获取文件后缀 * @param str $name 文件名 */ function getExt($name){ return strrchr($name,'.'); } ?>
删除指定文件unlink();
unlink('index.php');