PHP中Unicode转码和解码的实现

在JS中一般将汉字编码成为unicode进行输出,这样可以避免一些中文的问题。PHP中如何处理unicode,这里转一个文章给大家。


UNICODE编码在PHP中使用UCS-2编码,之前还真是没有发现,一直还以为是UTF-8就行了。贴出代码:


//将内容进行UNICODE编码,编码后的内容格式:YOKA\u738b (原始:YOKA王)
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,编码后的内容格式:YOKA\u738b (原始:YOKA王)
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;
}

测试用例:

echo ‘<h3>YOKA\u738b -> ‘.unicode_decode(‘YOKA\u738b’).’</h3>’;
$name = ‘YOKA王’;
echo ‘<h3>’.unicode_encode($name).’</h3>’;

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