如何使用php封装类实现图片上传可直接引用-php手册-php.cn

Home

php教程

php手册

如何使用php封装类实现图片上传可直接引用

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 13, 2016 am 11:32 AM

classimagephpuploadusepicturehowFinishaccomplishencapsulationQuoteofkind

class image {

    /**
     *完成图片的上传
     *
     *@param array $file 待上传的文件信息的数组，用于5个元素的那个数组
     *@return mixed 如果执行成功，返回上传了的文件名，否则返回false
     */
    public function upload($file) {

        if($file['error'] == 0) {
            $allow_types = array('image/jpeg', 'image/pjpeg', 'image/png', 'image/gif');
            if(in_array($file['type'], $allow_types)) {
                $maxsize = 2000000;
                if($file['size'] <= $maxsize) {
                    //上传
                    //需要将文件重命名，1，防止不规则的字符出现在文件名中，2，防止重名
                    //采用时间戳加随机数的形式
                    //后缀名如何获得？在原始文件名中获得后缀名
                    //在文件名中最后一个点截取到最后就是扩展名
                    //strrchr(在哪个字符串中查，查的字符串);
                    $new_filename = time() . mt_rand(10000, 99999) . strrchr($file['name'], '.');

                    //移动
                    //此函数返回移动成功还是失败
                    if(move_uploaded_file($file['tmp_name'],'images/'. $new_filename)) {
                        return $new_filename;
                    }
                }
            }
        }

        //只有一种情况返回文件名，其他全部返回false
        return false;
    }
}
?>

//-------------------------------------------------------------------------------------
<?php
header("content-type:text/html;charset=utf-8");
function __autoload($image){
        require_once($image.'.class.php');
}

    $image = new image();
    $user = $_POST['user'];
    $img = $_FILES['img'];
    //var_dump($img);
    $img = $image ->upload($img);
    mysql_connect('localhost','root','123');
    mysql_select_db('lyb');
    mysql_query('set names utf8');
    $q = "insert test_image(name,url) values('$user','$img')";
    //var_dump($q);
    $result = mysql_query($q);
                if($result){
                 
                   echo "添加成功.....<br /><br />";
                 }
                 else{
                   echo "添加失败。。。";
                 }
?>

//--------------------------------------------------------------------------------------

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>图片上传类</title>
</head>
<body>
<form enctype="multipart/form-data"  method="post" action="images.php">
姓名：<input type="text" name="user" id="user"/><br>
图片：<input type="file" name="img" id="img"/><br>
<input type="submit" value="提交"/>
</form>
</body>
</html>

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn