Added LE Triad methods

src/pocketmine/utils/Binary.php

@@ -55,6 +55,28 @@ class Binary{
 		return substr(pack("N", $value), 1);
 	}
 
+	/**
+	 * Reads a 3-byte little-endian number
+	 *
+	 * @param $str
+	 *
+	 * @return mixed
+	 */
+	public static function readLTriad($str){
+		return unpack("V", $str . "\x00")[1];
+	}
+
+	/**
+	 * Writes a 3-byte little-endian number
+	 *
+	 * @param $value
+	 *
+	 * @return string
+	 */
+	public static function writeLTriad($value){
+		return substr(pack("N", $value), 0, -1);
+	}
+
 	/**
 	 * Writes a coded metadata string
 	 * TODO: Replace and move this to entity