php怎么拼接二进制数据成字符串

php如何拼接二进制数据成字符串？
比如字符“你”的utf8 编码是“E4BDA0”。
现在有一数组$arr

$arr = array(chr(228), chr(189), chr(160));

如何将其拼接成一块，可以让其打印出字符“你”？
求帮助

二进制 php utf-8 编码

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------解决方案--------------------

$arr = array(chr(228), chr(189), chr(160));<br />
echo join('', $arr); //你<br />
foreach($arr as $v) echo $v;<br />
for($i=0; $i<count($arr); $i++) echo $arr[$i];

echo pack('H*', 'E4BDA0');<br />
echo hex2bin('E4BDA0');

Related labels：

arr array echo nbsp

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