phpexplode:使用空格作为分隔符将字符串拆分为单词 [英] php explode: split string into words by using space a delimiter

问题描述

$str = "This is a    string";
$words = explode(" ", $str);

工作正常，但空格仍然进入数组:

Works fine, but spaces still go into array:

$words === array ('This', 'is', 'a', '', '', '', 'string');//true

我更喜欢只有没有空格的单词，并且将有关空格数的信息分开.

I would prefer to have words only with no spaces and keep the information about the number of spaces separate.

$words === array ('This', 'is', 'a', 'string');//true
$spaces === array(1,1,4);//true

刚刚补充:(1, 1, 4) 表示第一个词后一个空格，第二个词后一个空格，第三个词后4个空格.

Just added: (1, 1, 4) means one space after the first word, one space after the second word and 4 spaces after the third word.

有什么办法可以快速完成吗?

Is there any way to do it fast?

谢谢.

推荐答案

要将 String 拆分为数组，应使用 preg_split:

For splitting the String into an array, you should use preg_split:

$string = 'This is a    string';
$data   = preg_split('/\s+/', $string);

你的第二部分(计算空格):

Your second part (counting spaces):

$string = 'This is a    string';
preg_match_all('/\s+/', $string, $matches);
$result = array_map('strlen', $matches[0]);// [1, 1, 4]

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