PHP：尽可能大块地将某些字符分成一个大字符串

Question

I am implementing Google Translation API and it will only take up to 5000 characters at a time, so I need to split larger documents into smaller ones and send multiple API requests.

I need to therefore split my content into chunks that are as long as possible (but less than 5000) and that has been split, hopefully not in the middle of a sentence which would make the translations difficult to process for Google.

I would therefore like to give my method an array of characters it should look for when splitting.

• </div>
• </p>
• </section>
• </blockquote>
• </br>
• . (dot space)

What would be a good approach to this?

Answer 1

Regexp is greedy by default.

.{0,4980}(\<\/div\>|\<\/p\>|\<\/section\>|\<\/blockquote\>|\<\/br\>|\.\s)

Should give the longest string ending with one of your delimiters.