support check buffer

[Joungkyun]

AS-IS

Currently, you can only obtain MAGIC information in the file specified in the first argument.

<?php
echo filebin('sample string');
?>

Result:
PHP Warning:  sample string file not found. in /root/work/github/php/mod_filebin/sample.php on line 63

Warning: sample string file not found. in /root/work/github/php/mod_filebin/sample.php on line 1

TO-BE

If the first 5Byte of the 1st argument value is DATA: prefix, use the magic_buffer api instead of the magic_file api.

<?php
$buffer = file_get_contents('/some/path/image.png');
echo filebin('DATA:' . $buffer);
?>