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This article mainly explains "how to use $_ FILES in php". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor learn how to use $_ FILES in php.

In php, "$_ FILES" is a predefined array variable that is used to get file data uploaded to the server through POST. For single file uploads, "$_ FILES" is a two-dimensional array; for multiple file uploads, "$_ FILES" is a three-dimensional array.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, "$_ FILES" is a predefined array variable.

Predefined variables, also known as superglobal variables, can be used in all scopes without being declared in advance. Through these predefined variables, you can obtain information such as the user session, the environment of the user's operating system and the environment of the local operating system.

$_ FILES can obtain the file data uploaded to the server through POST

For single file uploads, $_ FILES is a two-dimensional array; for multiple file uploads, $_ FILES is a three-dimensional array.

Example:

Create a file.html demo upload file with the following code:

Send this file:

Create a new PHP file file.php to receive file information as follows:

After selecting a file on the file.html page, click the Send File button, and the following information will be output on the page:

Array ([userfile] = > Array ([name] = > Screen Shot 2016-05-12 at 18.13.24.png [type] = > image/png [tmp_name] = > / private/var/tmp/phplVHp3W [error] = > 0 [size] = > 344925)) so far, I believe you have a deeper understanding of "how to use $_ FILES in php". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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