如何使用PHP计算包括空格在内的字符，然后在一定长度后使用新行换行

Question

如何计算包括空格在内的字符，然后在一定长度后中断，例如，如何使用PHP将25个字符后的字符串中断到新行上？

Answer 1

Fortunately somebody's already done the work. Use wordwrap .

---

If you really want to reinvent the wheel for learning sake, here are a few pieces to get you started:

• for (...) { }
• strlen()
• $str[$x] to access character x of string $str
• %
• .

Answer 2

Try chunk_split () if you don't mind cutting words in half. It treats whitespace as any other char.