First of all, we need to put all the processing file error information in one file
Next we will define a function file, function.php
We will use 3 files here, file.html doaction.php function.php
We won’t go into details about the first page, the code is as follows:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>文件上传</title> </head> <body> <form method="post" action="doaction1.php" enctype="multipart/form-data"> 上传文件：<input type="file" name="myfile"><br> <input type="submit" value="上传文件"> </form> </body> </html>
Let’s take a look at doaction.php
header ("Content-type: text/html; charset=utf-8");
$fileinfo = $_FILES['myfile'];
$allowEXT = array('jpg','png','jpeg ','gif');//File format
$maxfile = 2097152; //2M //How big is the file
$ext = pathinfo($fileinfo['name'],PATHINFO_EXTENSION);//Get the file type
$file = $fileinfo['error']; //Storage error information
We haven’t finished writing this file yet. When we encapsulate the function, we will introduce the encapsulated file into this file , and then call the function
Let’s look at the function.php file. The code is as follows:
<?php
function files($file,$ext,$allowEXT,$maxfile,$size){
//判断错误号
if($file > 0){
switch ($file){
case 1: $msg= "上传文件超过了php 配置文件中 upload_max_filesize 的值";break;
case 2: $msg= "上传文件超过max_file_size 大小";break;
case 3: $msg= "文件部分被上传";break;
case 4: $msg= "没有选择上传文件";break;
case 6: $msg= "没有找到临时目录";break;
case 7:
case 8: $msg= "系统错误";break;
}
exit($msg);
}
//检测文件上传的类型
if(!in_array($ext, $allowEXT)){
exit('非法文件类型');
}
//检测上传文件的大小
if($fileinfo['size']>$maxfile){
exit('文件过大');
}
//检测是否是http post方式提交的
if(!is_uploaded_file($fileinfo['$tmp_name'])){
exit("文件不是以POST方式提交");
}
}
?>With the above code, we have completed the encapsulation. The function has 4 parameters
Before we Speaking of doction.php, you need to introduce function.php, and then call the function
The complete code of the documentation.php file is as follows:
<?php
header("Content-type: text/html; charset=utf-8");
require_once("function.php");
$fileinfo = $_FILES['myfile'];
$allowEXT = array('jpg','png','jpeg','gif');//文件格式
$maxfile = 2097152; //2M //文件多大
$ext = pathinfo($fileinfo['name'],PATHINFO_EXTENSION);//获取文件类型
$file = $fileinfo['error']; //存放错误信息
$size = $fileinfo['size'];
files($file,$ext,$allowEXT,$maxfile,$size);
?>