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is_uploaded_file() function in PHP
The is_uploaded_file() function checks whether a file was uploaded via HTTP POST. The function returns TRUE if the file is uploaded via HTTP POST. It returns FALSE on failure.
Syntax
is_uploaded_file(file_path)
Parameters
file_path − Specify the file to be checked.
Return
The is_uploaded_file() function returns TRUE if the file is uploaded via HTTP POST. It returns FALSE on failure.
Let’s say we are uploading a file “new.txt” with the following content.
This is demo text!
Example
<?php
// checking for file is uploaded via HTTP POST
if (is_uploaded_file($_FILES['userfile'][‘new.txt'])) {
echo "File ". $_FILES['userfile'][‘new.txt'] ." uploaded successfully!
";
// displaying contents of the uploaded file
echo "Reading Contents of the file:
";
readfile($_FILES['userfile'][‘new.txt']);
} else {
echo "File ". $_FILES['userfile'][‘new.txt'] ." failed in uploading! File upload attack could be the reason!
";
}
?>Output
File new.txt uploaded successfully! Reading Contents of the file: This is demo text!
Let us see another example with file “details.txt”.
Example
<?php
$file = "newdetailstxt";
if(is_uploaded_file($file)) {
echo ("Uploaded via HTTP POST");
} else {
echo ("Not uploaded via HTTP POST");
}
?>Output
Not uploaded via HTTP POST!
Updated on: 24-Jun-2020
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