Solve the problem of garbled characters when splitting gbk Chinese, split gbk Chinese garbled characters

Solve the problem of garbled characters when splitting gbk Chinese, split gbk Chinese garbled characters_PHP tutorial

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Release： 2016-07-12 08:58:37

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The problem of garbled characters in gbk Chinese is solved. Split gbk Chinese garbled characters

Recently I encountered a magical word "韬(tao)".

The specific process is as follows:

<span>1</span> <span>$list</span> = <span>explode</span>('|', 'abc弢|bc'<span>);
</span><span>2</span> <span>var_dump</span>(<span>$list</span>);

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Get the result of this segmentation.

Contrary to imagination, the result is actually like this:

<span>array</span>(3<span>) {
  [</span>0]=>
  <span>string</span>(4) "<span>abc?
  [1]=>
  string(0) </span>""<span>
  [2]=>
  string(2) </span>"bc"<span>
}</span>

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Garbled characters appeared, and an empty element appeared inexplicably.

The reason is that it turns out that the gbk encoding of the character "韬" is 8f7c, and the ASCII of | is 7c, so explode cuts the second ASCII of "韬" as |.

Since it is a double-byte problem, we solved it with mbstring.

Unfortunately, PHP does not have a function like mb_explode. After searching, I found a mb_split.

<span>array</span> mb_split ( <span>string</span> <span>$pattern</span> , <span>string</span> <span>$string</span> [, int <span>$limit</span> = -1 ] )

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No place to declare encoding. Take a closer look and you will see that it is encoded through the mb_regex_encoding declaration.

So I wrote the following code:

<span>1</span> mb_regex_encoding('gbk'<span>);
</span><span>2</span> <span>$list</span> = mb_split('\|', 'abc弢|bc'<span>);
</span><span>3</span> <span>var_dump</span>(<span>$list</span>);

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As a result, php reported an error, mb_regex_encoding does not recognize gbk, embarrassing.

Then use it to know:

<span>1</span> mb_regex_encoding('gb2312'<span>);
</span><span>2</span> <span>$list</span> = mb_split('\|', 'abc弢|bc'<span>);
</span><span>3</span> <span>var_dump</span>(<span>$list</span>);

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Result:

<span>array</span>(3<span>) {
  [</span>0]=>
  <span>string</span>(4) "<span>abc?
  [1]=>
  string(0) </span>""<span>
  [2]=>
  string(2) </span>"bc"<span>
}</span>

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I found that this method is of no use. ,

As for the reason? The word "Tao" is not in the code set of GB2312! ! ! ! ! However, this function does not support the encoding sets (GBK, GB18030) with this character! ! ! ! !

Since this is not easy to use, maybe a universal regular expression is OK. So we got the following code:

<span>1</span> <span>var_dump</span>(<span>preg_match_all</span>('/([^\|])*/', 'abc弢|bc', <span>$matches</span><span>));
</span><span>2</span> <span>var_dump</span>(<span>$matches</span>);

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Result:

int(2<span>)
</span><span>array</span>(2<span>) {
  [</span>0]=>
  <span>array</span>(2<span>) {
    [</span>0]=>
    <span>string</span>(4) "<span>abc?
    [1]=>
    string(2) </span>"bc"<span>
  }
  [1]=>
  array(2) {
    [0]=>
    string(1) </span>"?<span>
    [</span>1]=>
    <span>string</span>(1) "c"<span>
  }
}</span>

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Okay, I thought too much.

Now let’s study how to describe this scene using regular expressions.

For reference, Brother Bird’s blog: How to solve the problem of garbled characters when splitting GBK into Chinese. Unfortunately, I, who have relatively low regular expression ability, still can't think of a suitable regular expression (if there are masters who have come up with this regular expression, I hope they can tell me).

I have no choice but to use substr after much thought:

<span> 1</span> <span>function</span> mb_explode(<span>$delimiter</span>, <span>$string</span>, <span>$encoding</span> = <span>null</span><span>){
</span><span> 2</span>     <span>$list</span> = <span>array</span><span>();
</span><span> 3</span>     <span>is_null</span>(<span>$encoding</span>) && <span>$encoding</span> =<span> mb_internal_encoding();
</span><span> 4</span>     <span>$len</span> = mb_strlen(<span>$delimiter</span>, <span>$encoding</span><span>);
</span><span> 5</span>     <span>while</span>(<span>false</span> !== (<span>$idx</span> = mb_strpos(<span>$string</span>, <span>$delimiter</span>, 0, <span>$encoding</span><span>))){
</span><span> 6</span>         <span>$list</span>[] = mb_substr(<span>$string</span>, 0, <span>$idx</span>, <span>$encoding</span><span>);
</span><span> 7</span>         <span>$string</span> = mb_substr(<span>$string</span>, <span>$idx</span> + <span>$len</span>, <span>null</span>, <span>$encoding</span><span>);
</span><span> 8</span> <span>    }   
</span><span> 9</span>     <span>$list</span>[] = <span>$string</span><span>;
</span><span>10</span>     <span>return</span> <span>$list</span><span>; 
</span><span>11</span> }

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Test code:

<span>1</span> <span>$a</span> = 'abc弢|bc'<span>;
</span><span>2</span> 
<span>3</span> <span>var_dump</span>(mb_explode('|', <span>$a</span>, 'gbk'<span>));
</span><span>4</span> <span>var_dump</span>(mb_explode('bc', <span>$a</span>, 'gbk'<span>));
</span><span>5</span> <span>var_dump</span>(mb_explode('弢', <span>$a</span>, 'gbk'));

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Result:

<span>array</span>(2<span>) {
  [</span>0]=>
  <span>string</span>(5) "abc弢"<span>
  [</span>1]=>
  <span>string</span>(2) "bc"<span>
}
</span><span>array</span>(3<span>) {
  [</span>0]=>
  <span>string</span>(1) "a"<span>
  [</span>1]=>
  <span>string</span>(3) "弢|"<span>
  [</span>2]=>
  <span>string</span>(0) ""<span>
}
</span><span>array</span>(2<span>) {
  [</span>0]=>
  <span>string</span>(3) "abc"<span>
  [</span>1]=>
  <span>string</span>(3) "|bc"<span>
}</span>

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This way you can get the correct results.