How to use php is_uploaded_file function

php is_uploaded_file function is used to determine whether the specified file is uploaded through HTTP POST. Its syntax is is_uploaded_file(file). The parameter file is required and refers to the file to be checked.​

How to use the php is_uploaded_file function?

Function: Determine whether the specified file is uploaded through HTTP POST.

Syntax:

is_uploaded_file(file)

Parameters:

file required. Specifies the documents to be checked.

Explanation:

If the file given by file is uploaded via HTTP POST, TRUE will be returned.

php is_uploaded_file() function usage example

<?php
$file = "index.txt";
if(is_uploaded_file($file))
{
    echo "该文件是上传的";
}else{
    echo "该文件不是上传的";
}
?>

Output:

该文件不是上传的

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