How to transfer files between two computers? Enhanced function for uploading files in PHP

The file object in the form, for example $_FILES['doc'], $path is the path to save, $type is the type to limit uploading (it is an array, for example, to limit uploading doc and docx and format, then this parameter can be filled in array("doc",".docx"), and whether there is a "." before the extension is not required).

Copy code The code is as follows:

function upload($file,$path,$type){
$state = array();
$state['error'] = " true";
$alltype = ""; // All types that can be uploaded are connected with "/"
$path = trim($path);
//Add "/" to the end of $path
if(strlen (strrchr($path,'/')) <= 1){
$path .= "/";
}
//Add a leading "." to the type
//Synthesize all types into strings, use "/" connect
foreach($type as $key=>$typeone){
$type[$key] = $typeone = trim($typeone);
if(strlen (strchr($typeone,".")) != strlen($typeone)){
$type[$key] = ".".$typeone;}
$alltype .= $typeone.'/';
}
$alltype = substr($alltype,0,strlen($alltype)-1); //Remove the last "/"
if(empty($file['name'])){
$state['error' ] = "No files of type {$alltype} uploaded!";
$state['errorid'] = 8;
return $state;
} else {
if (!$file['error']) {
$state ['name'] = $file['name'];
$state['type'] = strrchr($state['name'],'.');
if(in_array($state['type'] ,$type)){
$time = date("U");
$state['upname'] = $time.rand(1000,9999).$state['type']; //File naming
if (copy($file['tmp_name'],$path.$state['upname'])){
$state['time'] = date("U"); //Upload time
$state[' error'] = false;
return $state;
} else {
switch($file('error')){
case 1: $state['error'] = $state['name']."Upload failed , the file size exceeds the server's space! ";$state['errorid'] = 1;return $state;
case 2: $state['error'] = $state['name']."Upload failed. The size of the file to be uploaded exceeds the browser limit! ";$state['errorid'] = 2;return $state;
case 3: $state['error'] = $state['name']."Upload failed, the file was only partially uploaded! ";$state['errorid'] = 3;return $state;
case 4: $state['error'] = $state['name']."Upload failed, the file to be uploaded was not found! ";$state['errorid'] = 4;return $state;
case 5: $state['error'] = $state['name']."Upload failed, server temporary folder is lost! ";$state['errorid'] = 5;return $state;
case 6: $state['error'] = $state['name']."Upload failed, error in writing file to temporary folder! ";$state['errorid'] = 6;return $state;
default: $state['error'] = $state['name']."Upload failed, wrong location! ";$state['errorid'] = 10;return $state;
}
}
} else {
$state['error'] = $state['name']."Upload failed! Does not match the file type to be uploaded! ({$alltype})";
$state['errorid'] = 10;
return $state;
}
}
}
?>

The return value is an array
$key value
error error details
errorid error id (value only when an error occurs)
type file extension (with "." in front of the extension)
upname uploaded file name
time upload time (started from the Unix epoch (1970-01-01 00:00) Number of seconds to date)
Error type
errorid error
false //Upload successful
1 Upload failed, the file size exceeded the server's space!
2 Upload failed, the file size to be uploaded exceeded the browser limit!
3 Upload failed! , the file was only partially uploaded!
4 The upload failed, the file to be uploaded was not found!
5 The upload failed, the server temporary folder was lost!
6 The file failed to be written to the temporary folder!
8 This type was not uploaded! File! //The file object in the form is empty
10 The upload failed and the location is wrong!

The above introduces how to transfer files between two computers. The enhanced function of uploading files in PHP includes how to transfer files between two computers. I hope it will be helpful to friends who are interested in PHP tutorials.