PHP finfo_buffer() Function

20 June 2025

0

The finfo_buffer() is an inbuilt function in PHP that returns information about a string buffer.

Syntax:

Procedural Style:

string | false finfo_uffer(
    string $string, 
    int $flags = FILEINFO_NONE, 
    ?resource $context = null
)

Object-Oriented Style:

public finfo::buffer(
    string $string, 
    int $flags = FILEINFO_NONE, 
    ?resource $context = null
): string | false

Parameters: This function accepts three parameters that are described below:

string: It contains the content of a file that to be checked.
flags: It contains one or disjunction of more Fileinfo constants.
finfo: It contains a finfo instance that is returned by finfo_open() function.

Return Value: This function returns a textual description of the string argument, otherwise, it will return false.

Example 1: This example describes the finfo_buffer() function.

PHP

<?php 
$finfo = new finfo(FILEINFO_MIME); 
echo $finfo->buffer("./index.php") . "\n"; 
?>

Output:

text/plain; charset=us-ascii

Example 2: This example describes the finfo_buffer() function.

<?php 
$finfo = new finfo(FILEINFO_MIME); 
echo finfo_buffer($finfo,"./index.php") . "\n"; 
?>

Output:

text/plain; charset=us-ascii

Reference: https://www.php.net/manual/en/function.finfo-buffer.php