Custom naming rules for uploading files in THINKPHP5

In THINKPHP5: There is a chapter to upload files:

https://www.kancloud.cn/manual/thinkphp5/155159

If the file upload this chapter, do not understand, first look at the following, and then look at this paragraph.

Here we customize two rules.

1.datea rules, Month/time and seconds. (3-bit random number)

/201706/164030789

2.YMMD5 rules, Year/month/MD5

Modify the Framework file: thinkphp/library/think/file.php.

Increase of two case:

Case ' Datea ':

Case ' YMMD5 ':

That's all you can do.

/** *  get save file name  *  @param   string|bool    $savename       saved filenames   default auto generate  *  @return  string */protected function buildsavename ($ Savename) {    if  (true ===  $savename)  {         //  automatically generate file name         if  ($this->rule  Instanceof \closure)  {            $ Savename = call_user_func_array ($this->rule, [$this]);         } else {            switch   ($this->rule)  {                 case  ' Date ':                      $savename  = date (' Ymd ')  . ds . md5 (Microtime (true));                      break;                 case  ' Datea ':                      $savename  = date (' Ym ')  . ds . date (' his ')  . Rand (100,999));                     break;                 case  ' Ymmd5 ':                      $savename  = date (' Y ')  . ds . Date (' m ')  . ds. $This->hash (' MD5 ');                     break;                 default:                     if  (In_array ($this->rule, hash_algos ()))  {                           $hash      =  $this->hash ($this->rule);                           $savename  = substr ($hash,  0, 2)  . ds .  substr ($hash,  2);                     } elseif  (is_callable ($this->rule))  {                         $ Savename = call_user_func ($this->rule);                     } else {                           $savename  = date (' Ymd ')  . ds . md5 (Microtime (true));                     }             }         }    } elseif  (" ===  $savename)  {          $savename =  $this->getinfo (' name ');    }    if  (! Strpos ($savename,  '. '))  {         $savename  .=  '. '  . pathinfo ($this->getinfo (' name '),  pathinfo_extension);    }     return  $savename;}

If you do not understand the file upload chapter, look at the following first.

Suppose the form code is as follows:

<form action= "/index/index/upload" enctype= "Multipart/form-data" method= "POST" ><input type= "file" Name= " Image "/> <br> <input type=" Submit "value=" Upload "/> </form>

Then add the following code to the controller:

Public function upload () {        //  get form upload file   For example, uploaded 001.jpg     $file  = request ()->file (' image ');         //  move to the Framework app root directory/public/uploads/       $info  = $ File->move (root_path .  ' public '  . DS .  ' uploads ');         if ($info) {            //   After successful upload   get upload information         //  output  jpg         echo  $info->getextension ();                 //  Output  20160820/ 42a79759f284b767dfcb2a0197904287.jpg        echo  $info Getsavename ();                 //  Output  42a79759f284b767dfcb2a0197904287.jpg         echo  $info->getfilename ();      }else{             //  upload failed get error message          echo  $file->geterror ();     }}

moveIf the method succeeds, it returns an \think\File object that you can follow up on the uploaded file.

Multiple file uploads

If you are using a multi-file upload form, for example:

<form action= "/index/index/upload" enctype= "Multipart/form-data" method= "POST" ><input type= "file" Name= " image[] "/> <br> <input type=" file "Name=" image[] "/> <br> <input type=" file "Name=" image[] "/> ; <br> <input type= "Submit" value= "Upload"/> </form>

The controller code can be changed to:

Public function upload () {    //  get form upload file      $files  = request ()->file (' image ');         foreach ($files   as  $file) {            //  move to the Framework app root directory/ public/uploads/           $info  =  $file->move (root_ path .  ' public '  . DS .  ' uploads ');                 if ($info) {                        //  after successful upload   Get upload information             //  output  jpg             echo  $info->getextension ();              //  Output  42a79759f284b767dfcb2a0197904287.jpg             echo  $info->getfilename ();          }else{             //  upload failed get error message             echo $ File->geterror ();        }         }}

Upload Rules

By default, a file with the current date as a subdirectory, encoded as a file name in microseconds, is generated under the upload directory md5 , for example the file name generated above may be:

/home/www/upload/20160510/42a79759f284b767dfcb2a0197904287.jpg

We can specify the naming rules for uploading files, using the rule method, for example:

Get form upload file such as upload 001.jpg$file = Request ()->file (' image '),//move to the server's upload directory and use MD5 rules $file->rule (' MD5 ')->move (' /home/www/upload/');

The resulting file name is similar to the following:

/home/www/upload/72/ef580909368d824e899f77c7c98388.jpg

Several upload naming conventions are provided by default, including:

rules	Description
Date	Generated based on date and number of microseconds
Md5	Using md5_file hash generation for files
Sha1	Using Sha1_file hash generation for files

Where the MD5 and SHA1 rules automatically take the first two characters of the hash value as subdirectories, followed by the hash value as the file name.

If you need to use a custom naming convention, you can pass in a rule method to a function or method, for example:

Get form upload file such as upload 001.jpg$file = Request ()->file (' image '),//move to the server's upload directory and use uniqid rules $file->rule (' uniqid ') Move ('/home/www/upload/');

The resulting file name is similar to the following:

/home/www/upload/573d3b6d7abe2.jpg

If you want to keep the original file name, you can use:

Get the form upload file such as upload 001.jpg$file = Request ()->file (' image '),//move to the server's upload directory and use the original filename $file->move ('/home/www/upload/ ‘,‘‘);

By default, files with the same name are overwritten by the server's upload directory and can be used if you do not want to overwrite them:

Get form upload file such as upload 001.jpg$file = Request ()->file (' image '),//move to the server's upload directory and set not to overwrite $file->move ('/home/www/upload/' , True,false);

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Custom naming rules for uploading files in THINKPHP5