Enhanced function for uploading files in php_PHP tutorial

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){
$path .= "/";
}
//Add a leading "." to the type
//Synthesize all types into strings and connect them with "/"
foreach($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'])){
$state['error'] = "No {$alltype} file 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'] = $state['name']."Upload failed, file The size exceeds the server's space! ";$state['errorid'] = 1;return $state;
case 2: $state['error'] = $state['name']."Upload failed, the file size to be uploaded exceeds the browser size limit! ";$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'] = $state['name']." The upload failed and there was an error when writing the file to the temporary folder. ! ";$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 (number of seconds since the Unix epoch (1970-01-01 00:00))

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 deleted. Upload!
4 The file to be uploaded was not found!
5 The upload failed and the temporary folder on the server was lost!
6 The file failed to be written to the temporary folder.
8 None! Upload this type of file! //The file object in the form is empty
10 The upload failed and the location is wrong!

http://www.bkjia.com/PHPjc/322230.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/322230.htmlTechArticleThe file object in the form, for example $_FILES['doc'], $path is the saved path, $type To limit the type of upload (it is an array, for example, to limit the upload of doc and docx and format, then this parameter...