php下载的功能
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2022-05-01 17:07:07
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upload.php开始
<?php function upload_file($fileInfo,$uploadPath='./uploads',$imageFlag=true,$allowExt=array('jpeg','jpg','png','gif'),$maxSize=209708){ define('UPLOAD_ERRS',[ 'upload_max_filesize'=>'超过了PHP配置文件中upload_max_filesize选项的值', 'form_max_size'=>'超过了表单MAX_FILE_SIZE选项的值', 'upload_file_partial'=>'文件部分被上传', 'no_upload_file_select'=>'没有选择上传文件', 'upload_system_error'=>'系统错误', 'no_allow_ext'=>'非法文件类型', 'exceed_max_size'=>'超出允许上传的最大值', 'not_true_image'=>'文件不是真实图片', 'not_http_post'=>'文件不是通过HTTP POST方式上传上来的', 'move_error'=>'文件移动失败' ]); //检测是否上传是否有错误 if($fileInfo['error']===UPLOAD_ERR_OK){ //检测上传文件类型 $ext=strtolower(pathinfo($fileInfo['name'],PATHINFO_EXTENSION)); if(!in_array($ext,$allowExt)){ echo UPLOAD_ERRS['no_allow_ext']; return false; } //检测上传文件大小是否符合规范 if($fileInfo['size']>$maxSize){ echo UPLOAD_ERRS['exceed_max_size']; return false; } //检测是否是真实图片 if($imageFlag){ if(@!getimagesize($fileInfo['tmp_name'])){ echo UPLOAD_ERRS['not_true_image']; return false; } } //检测文件是否通过HTTP POST方式上传上来的 if(!is_uploaded_file($fileInfo['tmp_name'])){ return UPLOAD_ERRS['not_http_post']; } //检测目标目录是否存在,不存在则创建 if(!is_dir($uploadPath)){ mkdir($uploadPath,0777,true); } //生成唯一文件名,防止重名产生覆盖 $uniName=md5(uniqid(microtime(true),true)).'.'.$ext; $dest=$uploadPath.DIRECTORY_SEPARATOR.$uniName; //移动文件 if(@!move_uploaded_file($fileInfo['tmp_name'],$dest)){ echo UPLOAD_ERRS['move_error']; return false; } echo '文件上传成功'; return $dest; }else{ switch($fileInfo['error']){ case 1: // $mes='超过了PHP配置文件中upload_max_filesize选项的值'; $mes=UPLOAD_ERRS['upload_max_filesize']; break; case 2: $mes=UPLOAD_ERRS['form_max_size']; break; case 3: $mes=UPLAOD_ERRS['upload_file_partial']; break; case 4: $mes=UPLOAD_ERRS['no_upload_file_select']; break; case 6: case 7: case 8: $mes=UPLAOD_ERRS['upload_system_error']; break; } echo $mes; return false; } } ?>
upload.php结束
html的开始 <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <!-- <a href="http://localhost:8081/download.php?filename=5.html">下载5.html</a> --> <h1>文件上传</h1> <form action="http://localhost:8081/doUpload.php" method='post' enctype="multipart/form-data"> <input type="file" name="myFile" id=""> <input type="submit" value="立即上传"> </form> </body> </html> html的结束 doUpload.php的开始 <?php require_once('upload.php'); $fileInfo=$_FILES['myFile']; var_dump(upload_file($fileInfo)); ?>
doUpload.php的结束
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