Examples of mutual conversion between PHP binary and string

Welcome everyone to learn the mutual conversion between PHP binary and string here! The problem is definitely of concern to many friends. Friends who want to know more can take a look.

This article mainly introduces the mutual conversion between PHP binary and string. Friends in need can come and learn about it.

php code is as follows:

　<?php
　　header("Content-type: text/html; charset=utf-8");
　　/**
　　* 将字符串转换成二进制
　　* @param type $str
　　* @return type
　　*/
　　function StrToBin($str){
　　//1.列出每个字符
　　$arr = preg_split(&#39;/(?<!^)(?!$)/u&#39;, $str);
　　//2.unpack字符
　　foreach($arr as &$v){
　　$temp = unpack(&#39;H*&#39;, $v); $v = base_convert($temp[1], 16, 2);
　　unset($temp);
　　}
　　return join(&#39; &#39;,$arr);
　　}
　　/**
　　* 讲二进制转换成字符串
　　* @param type $str
　　* @return type
　　*/
　　function BinToStr($str){
　　$arr = explode(&#39; &#39;, $str);
　　foreach($arr as &$v){
　　$v = pack("H".strlen(base_convert($v, 2, 16)), base_convert($v, 2, 16));
　　}
　　return join(&#39;&#39;, $arr);
　　}
　　echo StrToBin("php二次开发：www.php2.cc");;
　　echo &#39;<br/>&#39;;
　　echo BinToStr("1110000 1101000 1110000 111001001011101010001100 111001101010110010100001 111001011011110010000000 111001011000111110010001 111011111011110010011010 1110111 1110111 1110111 101110 1110000 1101000 1110000 110010 101110 1100011 1100011");

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