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PHP UNICODE编码(\u) 和UTF-8 之间转换

[php]
header("content:application/json;chartset=uft-8");

//将内容进行UNICODE编码
function unicode_encode($name){
$name = iconv(‘UTF-8’, ‘UCS-2’, $name);
$len = strlen($name);
$str = ”;
for ($i = 0; $i < $len – 1; $i = $i + 2)
{
$c = $name[$i];
$c2 = $name[$i + 1];
if (ord($c) > 0)
{ // 两个字节的文字
$str .= ‘\u’.base_convert(ord($c), 10, 16).base_convert(ord($c2), 10, 16);
}
else
{
$str .= $c2;
}
}
return $str;
}
//将UNICODE编码后的内容进行解码
function unicode_decode($name){
// 转换编码,将Unicode编码转换成可以浏览的utf-8编码
$pattern = ‘/([\w]+)|(\\\u([\w]{4}))/i’;
preg_match_all($pattern, $name, $matches);
if (!empty($matches))
{
$name = ”;
for ($j = 0; $j < count($matches[0]); $j++)
{
$str = $matches[0][$j];
if (strpos($str, ‘\\u’) === 0)
{
$code = base_convert(substr($str, 2, 2), 16, 10);
$code2 = base_convert(substr($str, 4), 16, 10);
$c = chr($code).chr($code2);
$c = iconv(‘UCS-2’, ‘UTF-8’, $c);
$name .= $c;
}
else
{
$name .= $str;
}
}
}
return $name;
}
$utf8_name = ‘MY,你的东西’; //MY,\u4f60\u5927\u7237\u7684
$unicode_name=unicode_encode($utf8_name);
echo $unicode_name . ‘ -> ‘.unicode_decode($unicode_name);

echo unicode_decode("\u0000");

[/php]

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