blocks|key|2902793|text|我认为您必须使用strpos和strrpos的组合来查找下一个空格和以前的空格，解析空格之间的文本，根据已知的特殊字符列表检查文本，如果匹配，则将“剪切”扩展到下一个空格的位置。如果你有一个你现在拥有的代码样本，我们可以给你一个更好的答案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2902794|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I think you would have to use a combination of strpos and strrpos to find the next and previous spaces, parse the text between the spaces, check that against a known list of special characters, and if it matches, extend your "cut" to the position of the next space. If you had a code sample of what you have now, we could give you a better answer.

blocks|key|2924397|text|您可以首先使用html_entity_decode()来解码所有的HTML。那就劈开你的绳子。然后htmlentities()重新编码这些实体。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2924398|$decoded_string+=+html_entity_decode($original_string);
//+implement+logic+to+split+string+here

//+then+for+each+string+part+do+the+following:
$encoded_string_part+=+htmlentities($split_string_part);|code-block|syntax|javascript|2924399|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use html_entity_decode() first to decode all the HTML entities. Then split your string. Then htmlentities() to re-encode the entities.

<pre><code>$decoded_string = html_entity_decode($original_string);
// implement logic to split string here

// then for each string part do the following:
$encoded_string_part = htmlentities($split_string_part);
</code></pre>

blocks|key|2902819|text|最长的HTML实体有10个字符长，包括符号和分号。如果您打算在X字节处剪切字符串，请通过X-1检查字节X-9中的符号。如果相应的分号出现在字节X或更高版本，则在分号之后而不是在字节X之后剪切字符串。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2902820|但是，如果您愿意对字符串进行预处理，则Mike的解决方案将更加准确，因为他在X字符(而不是字节)下剪切字符串。|2902821|entityMap^0|V|1|18|3|1F|3|1Z|1|2I|1|0|12|1|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|I|$]]

The longest HTML entity is 10 characters long, including the ampersand and semicolon. If you intend to cut the string at <code>X</code> bytes, check bytes <code>X-9</code> through <code>X-1</code> for an ampersand. If the corresponding semicolon appears at byte <code>X</code> or later, cut the string after the semicolon instead of after byte <code>X</code>.

However, if you're willing to preprocess the string, Mike's solution will be more accurate because his cuts the string at <code>X</code> characters, not bytes.

blocks|key|3784459|text|最好的解决方案是将文本存储为UTF-8，而不是将它们存储为HTML实体。除此之外，如果您不介意计数为off+(`等于一个字符，而不是7)，那么下面的代码段应该可以工作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3784460|<?php
$string+=+'This+is+my+string+with+a+special+char+:+&egrave;+-+and+I+want+it+to+cut+in+the+middle+of+the+"&egrave;"+but+still+keeping+the+string+intact';
$cut_string+=+htmlentities(mb_substr(html_entity_decode($string,+NULL,+'UTF-8'),+0,+45),+NULL,+'UTF-8')." ";|code-block|syntax|javascript|3784461|注意:如果您使用不同的函数对文本进行编码(例如，htmlspecialchars()__)，则使用该函数而不是htmlentities()__。如果使用自定义函数，则使用另一个与新的自定义函数相反的自定义函数，而不是html_entity_decode()+(而不是htmlentities()__)。|BOLD|3784462|entityMap^0|1J|1|0|0|0|47|O|I|1J|E|30|K|3P|E|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|S|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|T|8|@$9|U|A|V|B|M]|$9|W|A|X|B|C]|$9|Y|A|Z|B|C]|$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|N|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|O|$]]

The best solution would be to store your text as UTF-8, instead of storing them as HTML entities. Other than that, if you don't mind the count being off (<code>&amp;grave;</code> equals one character, instead of 7), then the following snippet should work:

<pre><code>&lt;?php
$string = 'This is my string with a special char : &amp;egrave; - and I want it to cut in the middle of the "&amp;egrave;" but still keeping the string intact';
$cut_string = htmlentities(mb_substr(html_entity_decode($string, NULL, 'UTF-8'), 0, 45), NULL, 'UTF-8')."&lt;br&gt;&lt;br&gt;";
</code></pre>

Note: If you use a different function to encode the text (e.g. <code>htmlspecialchars()</code>), then use that function instead of <code>htmlentities()</code>. If you use a custom function, then use another custom function that does the opposite of your new custom function instead of <code>html_entity_decode()</code> (and custom function instead of <code>htmlentities()</code>).

blocks|key|3784498|text|这里最好的方法是将字符串存储为UTF-8，没有任何html实体，并使用mb_*系列函数，并以utf8作为编码。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3784499|但是，如果您的字符串是ASCII或iso-8859-1/+can+1252，则可以使用mb_string库的特殊mb_string编码：|3784500|$s+=+'This+is+my+string+with+a+special+char+:+&egrave;+-+and+I+want+it+to+cut+in+the+middle+of+the+"&egrave;"+but+still+keeping+the+string+intact';
echo+mb_substr($s,+0,+40,+'HTML-ENTITIES');
echo+mb_substr($s,+0,+41,+'HTML-ENTITIES');|code-block|syntax|javascript|3784501|但是，如果您的底层字符串是UTF-8或其他多字节编码的，则使用HTML-ENTITIES是不安全的！这是因为HTML-ENTITIES真正的意思是“作为html实体具有高位字符的win1252”。这是一个可能出错的例子：|BOLD|3784502|//+Assuming+that+é+is+in+utf8:
mb_substr('é+',+0,+2,+'HTML-ENTITIES')+===+'&Atilde;&copy;'
//+should+be+'&eacute;+'|3784503|当您的字符串是多字节编码时，必须在拆分之前将所有html实体转换为公共编码。例如：|3784504|$strings_actual_encoding+=+'utf8';
$s_noentities+=+html_entity_decode($s,+ENT_QUOTES,+$strings_actual_encoding);+
$s_trunc_noentities+=++mb_substr($s_noentities,+0,+41,+$strings_actual_encoding);|3784505|entityMap^0|Z|4|1A|4|0|0|0|R|2B|V|D|1I|D|0|0|0|15|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|13|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|14|8|@$9|15|A|16|B|O]|$9|17|A|18|B|C]|$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|J|7|1B|8|@]|D|@]|E|$K|L]]|$1|R|3|S|5|6|7|1C|8|@$9|1D|A|1E|B|O]]|D|@]|E|$]]|$1|T|3|U|5|J|7|1F|8|@]|D|@]|E|$K|L]]|$1|V|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]]|W|$]]

The best thing to do here is store your string as UTF-8 without any html entities, and use the <code>mb_*</code> family of functions with <code>utf8</code> as the encoding.

But, if your string is ASCII or iso-8859-1/win1252, you can use the special <code>HTML-ENTITIES</code> encoding of the mb_string library:

<pre><code>$s = 'This is my string with a special char : &amp;egrave; - and I want it to cut in the middle of the "&amp;egrave;" but still keeping the string intact';
echo mb_substr($s, 0, 40, 'HTML-ENTITIES');
echo mb_substr($s, 0, 41, 'HTML-ENTITIES');
</code></pre>

However, if your underlying string is UTF-8 or some other multibyte encoding, using <code>HTML-ENTITIES</code> is not safe! This is because <code>HTML-ENTITIES</code> really means "win1252 with high-bit characters as html entities". This is an example of where this can go wrong:

<pre><code>// Assuming that é is in utf8:
mb_substr('é ', 0, 2, 'HTML-ENTITIES') === '&amp;Atilde;&amp;copy;'
// should be '&amp;eacute; '
</code></pre>

When your string is in a multibyte encoding, you must instead convert all html entities to a common encoding before you split. E.g.:

<pre><code>$strings_actual_encoding = 'utf8';
$s_noentities = html_entity_decode($s, ENT_QUOTES, $strings_actual_encoding); 
$s_trunc_noentities = mb_substr($s_noentities, 0, 41, $strings_actual_encoding);
</code></pre>

Sorry for the title, I really didn't know how to say this...

I often have a string that needs to be cut after X characters, my problem is that this string often contains special characters like : &amp; egrave ;

So, I'm wondering, is their a way to know in php, without transforming my string, if when I am cutting my string, I am in the middle of a special char.

Example

<pre><code>This is my string with a special char : &amp;egrave; - and I want it to cut in the middle of the "&amp;egrave;" but still keeping the string intact
</code></pre>

so right now my result with a sub string would be :

<pre><code>This is my string with a special char : &amp;egra
</code></pre>

but I want to have something like this :

<pre><code>This is my string with a special char : &amp;egrave;
</code></pre>

PHP - Substring after X characters with special-characters

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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抱歉，我真的不知道怎么说.我经常有一个字符串，需要在X字符之后剪切，我的问题是这个字符串通常包含一些特殊的字符，比如：& egrave；所以，我想知道，他们是一种在php中了解的方式，而不需要转换我的字符串，如果我在切割字符串时，我处于一个特殊的字符中间。示例This is my string with a speci...

问带有特殊字符的X字符后面的子字符串
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