(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL fileinfo >= 0.1.0)
finfo_buffer -- finfo::buffer — Return information about a string buffer
Procedural style
$finfo,$string,$flags = FILEINFO_NONE,$context = nullObject-oriented style
$string, int $flags = FILEINFO_NONE, ?resource $context = null): string|falseThis function is used to get information about binary data in a string.
finfoAn finfo instance, returned by finfo_open().
stringContent of a file to be checked.
flagsOne or disjunction of more Fileinfo constants.
context
   Returns a textual description of the string
   argument, or false if an error occurred.
  
| Version | Description | 
|---|---|
| 8.1.0 | The finfoparameter expects an finfo
  instance now; previously, a resource was expected. | 
| 8.0.0 | contextis nullable now. | 
Example #1 A finfo_buffer() example
<?php
$finfo = new finfo(FILEINFO_MIME);
echo $finfo->buffer($_POST["script"]) . "\n";
?>
The above example will output something similar to:
application/x-sh; charset=us-ascii