How to convert php binary to string

How to convert php binary to string: first create a PHP sample file; then convert the binary into a string through the BinToStr method; and finally output the conversion result through echo.

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Conversion between php binary and string

<?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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