What is the type of this encoding?

i have an file is encoded to this format what type of this encoding please?

<?php
/*********************/
/*                   */
/*  Version : 5.1.0  */
/*  Author  : RM     */
/*  Comment : 071223 */
/*          开发者_如何学Go         */
/*********************/

echo "ELF\x01\x02\x01\x00\x00\x00

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That's an ELF header - a linux/bsd/solaris/bunch of others executable file.

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The "\x01" is a string with C-style character escaping. PHP supports it in its double quoted strings too.
See http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.double