PHP图片文件批量上传

PHP图片文件批量上传

示例：

<?php
error_reporting(E_ALL);
//printf('<pre>%s</pre>',print_r($_FILES,true));
class UploadException extends EXception
{
    public function __toString()
    {
        return <<< UPLOAD
        <table>
            <tr>
                <td>编号</td>
                <td>信息</td>
                <td>文件</td>
                <td>行号</td>
            </tr>
            <tr>
                <td>$this->code</td>
                <td>$this->message</td>
                <td>$this->file</td>
                <td>$this->line</td>
            </tr>
        </table>
        <style>
table {border-collapse: collapse;border:1px solid black;text-align: center;}
td {border:1px solid black;padding: 5px;}
tr:first-of-type {background-color:#eee;}
tr:last-of-type td {color: coral;}
</style>
UPLOAD;
    }
}
    try {
           foreach($_FILES as $file){
            foreach($_FILES['ufile']['error'] as $k=>$v)
            {          
                 $ufiles=['name'=>$_FILES['ufile']['name'][$k],
                          'type'=>$_FILES['ufile']['type'][$k],
                          'tmp_name'=>$_FILES['ufile']['tmp_name'][$k],
                          'error'=>$_FILES['ufile']['error'][$k],
                          'size'=>$_FILES['ufile']['size'][$k]
                        ];  
                if($ufiles['error']=== 0)
                    {
                    $fileType =$ufiles['type'] ?? null;
                    //判断类型
                    $type = strstr($fileType,'/',true);//对文件类型进行切割。加上true取/前面的
                    if(!is_null($fileType))
                    {
                         echo $type;
                        if($type !== 'image') throw new UploadException('文件类型错误',8);
                    }                   
                    //判断临时文件
                    $tmplFileName = $ufiles['tmp_name'] ?? NULL;  //临时文件名                   
                    //1.首先临时文件是存在的并且必须是通过POST上传的          
                    //   2.将文件从临时目录移动到目标目录中：uploads    
                    //move_uploaded_file(临时文件，目标文件)
                    if($tmplFileName && is_uploaded_file($tmplFileName))
                    {
                         $originFileName = $ufiles['name'] ?? null;
                         //获取上传的文件名
                         $newFileName = strstr($originFileName,'.');
                         //分割获取文件的后缀如：.jpg/.png/.gif/...
                         $destFileName = 'uploads/'.md5(time().mt_rand(1,100)).$newFileName ?? null;
                         //生成存储图片的地址$destFileName
                         //destFileName 设置上传文件的地址
                         //如果move_uploaded_file执行成功
                        if(move_uploaded_file($tmplFileName, $destFileName ))
                        {
                            echo '<p>'. $ufiles['name'].'上传成功';
                            //预览图片
                            echo "<img src='{$destFileName}' width=200>";
                        }
                        else
                        {
                            echo '上传失败';
                        }
                    }
                  }
                  else
                  {
                        $errorCode = $ufiles['error'] ?? null;
                        // 使用系统常量进行判断
                        if ($errorCode > UPLOAD_ERR_OK)
                        {
                            switch($errorCode)
                            {
                                case UPLOAD_ERR_INI_SIZE:
                                    throw new UploadException('文件超过`php.ini`中`upload_max_filesize`值',1);
                                break;
                                case UPLOAD_ERR_FORM_SIZE:
                                    throw new UploadException('文件大小超过表单中`MAX_FILE_SIZE`指定的值',2);
                                break;
                                case UPLOAD_ERR_PARTIAL:
                                    throw new UploadException('文件只有部分被上传',3);
                                break;
                                case UPLOAD_ERR_NO_FILE:
                                    throw new UploadException('没有文件被上传',4);
                                break;
                                case UPLOAD_ERR_NO_TMP_DIR:
                                    throw new UploadException('找不到临时文件夹',5);
                                break;
                                case UPLOAD_ERR_CANT_WRITE:
                                    throw new UploadException('文件写入失败',6);
                                break;
                                default:
                                    throw new UploadException('未知错误',7);
                            }
                        }
                    }    
            }        
          }   
        }
                catch (UploadException $e) {   
                    echo $e;         
                }
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>多文件上传</title>
</head>
<body>
    <form action="" method="POST" enctype="multipart/form-data">
    <fieldset>
    <legend>多文件上传</legend>
    <!-- <input type="hidden" name="MAX_FILE_SIZE" value="500000"> -->
    <!-- MAX_FILE_SIZE 设置上传文件的大小 -->
    <input type="file" name="ufile[]" id ="ufile"  multiple="multiple">
    <button>上传</button>
    </fieldset>
    </form>
</body>
</html>

示例图：