PHP:UTF-8多字节字符串拆分器?

时间:2016-01-01 03:31:00

标签: php string splitter

这可以用于每10个字符拆分一个多字节字符串吗?

$string = 'Star Wars Episode Seven Sucked';    
mb_split('.', $string, 10);

PHP手册说str_split()适用于字节,而不适用于多字节字符串中的字符。这意味着mb_split()似乎是一个自然的超载"替换,但这两个函数(str_split()mb_split())具有不同的函数签名,并且不是"重载伙伴,"可以这么说。然后,我想了想,这个怎么样?

mb_internal_encoding("UTF-8");
$string = 'Star Wars Episode Seven Sucked';  
$tokens = [];

for($i = 0, $length = mb_strlen($string); $i < $length; $i += 10)
{
    $tokens[] = mb_substr($string, $i, 10, 'UTF-8');
}

print_r($tokens);

1 个答案:

答案 0 :(得分:-1)

function mb_utf8_split($string, $interval)
{
     $tokens = [];
     mb_internal_encoding('UTF-8');

     $stringEncoding = mb_detect_encoding($string, 'UTF-8, ISO-8859-1', true);

     if(!$stringEncoding)
     {
          throw new RuntimeException("Unable to identify character encoding.");
     }

     if($stringEncoding !== 'UTF-8')
     {
          $string = mb_convert_encoding($string, 'UTF-8', $stringEncoding);
     }

     for($i = 0, $length = mb_strlen($string); $i < $length; $i += $interval)
     {
         $tokens[] = mb_substr($string, $i, $interval, 'UTF-8');
     }

     return $tokens;
}