Php mandatory file download function

This article mainly introduces php mandatory file download functions, which has some reference value. interested friends can refer to the examples in this article to share with you the php mandatory file download function, for your reference, the specific content is as follows:

Public function down () {$ id = $ this-> _ get ('id'); $ M = M ("downloads "); $ data = $ M-> where ("id = $ id and status = 1")-> find ();! $ Data & exit; $ filename = iconv ('utf-8', 'gbk', $ data ['filename']); $ savename = $ data ['savename']; $ myfile = $ data [url]? $ Data [url]: 'uploads/file /'. $ savename; if (file_exists ($ myfile) {$ M-> where ("id = $ id")-> setInc ('downloads '); $ file = @ fopen ($ myfile, "r"); header ("Content-type: application/octet-stream"); header ("Content-Disposition: attachment; filename = ". $ filename); while (! Feof ($ file) {echo fread ($ file, 50000) ;}fclose ($ file); exit;} else {echo 'The file does not exist! ';}}

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