php兑现java的byte数组转换
Jun 13, 2016 am 10:54 AM
php实现java的byte数组转换
由于工作需要,自己写的一个php实现java的byte数组转换的类。
/**
?* byte数组与字符串转化类
?* @author zikie
?* Created on 2011-7-15
?*/
class Bytes {
???
??? /**
???? * 转换一个String字符串为byte数组
???? * @param $str 需要转换的字符串
???? * @param $bytes 目标byte数组
???? * @author Zikie
???? */
????
??? public static function getBytes($str) {
??? ??? $len = strlen($str);
??? ??? $bytes = array();
?? ??? ??? for($i=0;$i?? ??? ??? ??? if(ord($str[$i]) >= 128){
?? ??? ??? ??? ??? $byte = ord($str[$i]) - 256;
?? ??? ??? ??? }else{
?? ??? ??? ??? ??? $byte = ord($str[$i]);
?? ??? ??? ??? }
??????? ??? $bytes[] =? $byte ;
??? ??? }
??? ??? return $bytes;
??? }
???
??? /**
???? * 将字节数组转化为String类型的数据
???? * @param $bytes 字节数组
???? * @param $str 目标字符串
???? * @return 一个String类型的数据
???? */
????
??? public static function toStr($bytes) {
??? ??? $str = '';
??? ??? foreach($bytes as $ch) {
??????? ??? $str .= chr($ch);
??? ??? }
?? ??? ??? return $str;
??? }
???
??? /**
???? * 转换一个int为byte数组
???? * @param $byt 目标byte数组
???? * @param $val 需要转换的字符串
???? * @author Zikie
???? */
???
??? public static function integerToBytes($val) {
??? ??? $byt = array();
??? ??? $byt[0] = ($val & 0xff);
??? ??? $byt[1] = ($val >> 8 & 0xff);
??? ??? $byt[2] = ($val >> 16 & 0xff);
??????? $byt[3] = ($val >> 24 & 0xff);
??????? return $byt;
??? }
???
??? /**
???? * 从字节数组中指定的位置读取一个Integer类型的数据
???? * @param $bytes 字节数组
???? * @param $position 指定的开始位置
???? * @return 一个Integer类型的数据
???? */
????
??? public static function bytesToInteger($bytes, $position) {
??????? $val = 0;
??????? $val = $bytes[$position + 3] & 0xff;
??????? $val ??????? $val |= $bytes[$position + 2] & 0xff;
??????? $val ??????? $val |= $bytes[$position + 1] & 0xff;
??????? $val ??????? $val |= $bytes[$position] & 0xff;
??????? return $val;
??? }
??? /**
???? * 转换一个shor字符串为byte数组
???? * @param $byt 目标byte数组
???? * @param $val 需要转换的字符串
???? * @author Zikie
???? */
???
??? public static function shortToBytes($val) {
??? ??? $byt = array();
??? ??? $byt[0] = ($val & 0xff);
??????? $byt[1] = ($val >> 8 & 0xff);
??????? return $byt;
??? }
???
??? /**
???? * 从字节数组中指定的位置读取一个Short类型的数据。
???? * @param $bytes 字节数组
???? * @param $position 指定的开始位置
???? * @return 一个Short类型的数据
???? */
????
??? public static function bytesToShort($bytes, $position) {
??????? $val = 0;
??????? $val = $bytes[$position + 1] & 0xFF;
??????? $val = $val ??????? $val |= $bytes[$position] & 0xFF;
??????? return $val;
??? }
???
}
?>

Hot Article

Hot tools Tags

Hot Article

Hot Article Tags

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

HWID V 2.2 manual activation methods and tutorials

Flexible application skills of position attribute in H5

Golang function byte, rune and string type conversion skills

How to solve 'undefined: bytes.Split' error in golang?

CSS layout property optimization tips: position sticky and flexbox
