How to fill in enctype when php uploads forms and pictures at the same time

How to fill in enctype when uploading forms and pictures at the same time in php

When the file submission contains text and pictures, Enctype should be added to the form attribute, and the value should be multipart/form-data.

<form action="" method="post" id="myform" name="myform" enctype="multipart/form-data"></form>

enctype This attribute manages the MIME (Multipurpose Internet Mail Extensions) encoding of the form. There are three optional values:

● application/x-www-form-urlencoded --- The default value is used to set the encoding for form transmission and cannot be used to upload files.

eg: xmlHttp.setRequestHeader("Content-Type", "application/x-www-form- urlencoded") in AJAX, no When writing a form that will report an error, you do not need to write enctype=application/x-www-form-urlencoded, because the default HTML form is this transmission encoding type

● multipart/form-data --- Specify the transmission Special type of data, uploaded non-text content, such as pictures or mp3

● text/plain ---Plain text transmission, cannot be used to upload files MIME: Multifunctional Internet mail expansion service, it It is a multi-purpose Internet mail extension protocol that was first used in email systems in 1992, but was later also applied to browsers. The server will tell the browser the type of multimedia data they send, and the notification method is to indicate the MIME type of the multimedia data, so that the browser knows which of the received information is an MP3 file, which is a Shockwave file, etc. The server will set the MIME flag Characters are put into the transmitted data to tell the browser which plug-in to use to read the relevant files.

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