如何从字符串中获取第一个x字符，而不切断最后一个单词? [英] How to get first x chars from a string, without cutting off the last word?

问题描述

我在变量中包含以下字符串.

I have the following string in a variable.

Stack Overflow is as frictionless and painless to use as we could make it.

我想从上述行中获取前28个字符，因此通常如果我使用 substr ，那么它将为我提供Stack Overflow is as frictio此输出，但我希望将其输出为:

I want to fetch first 28 characters from the above line, so normally if I use substr then it will give me Stack Overflow is as frictio this output but I want output as:

Stack Overflow is as...

PHP中是否有任何预制函数可以执行此操作，或者请向我提供PHP中的代码?

Is there any pre-made function in PHP to do so, Or please provide me code for this in PHP?

已

我想要从字符串中总共28个字符不打断一个单词，如果它返回的字符数少于28个而又不打断一个单词，那很好.

I want total 28 characters from the string without breaking a word, if it will return me few less characters than 28 without breaking a word, that's fine.

推荐答案

您可以使用 wordwrap() 函数，然后在换行符上爆炸并进入第一部分:

You can use the wordwrap() function, then explode on newline and take the first part:

$str = wordwrap($str, 28);
$str = explode("\n", $str);
$str = $str[0] . '...';

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