用php写一个uft8编码的ASCII转换成unicode的函数

function asciiToUnicode($ascii) { $unicode = ''; $asciiArr = explode(',', $ascii); foreach ($asciiArr as $val) { $unicode .= '\u' . str_pad(dechex($val), 4, '0', STR_PAD_LEFT); } return json_decode('"' . $unicode . '"'); }

//测试 echo asciiToUnicode("97,98,99"); //输出：abc