PHP explode 函数接受超过 1 个空格,PHP,EXPLODE,WHITESPACES

PHP explode function takes in more than 1 whitespace, PHP, EXPLODE, WHITESPACES

我有一个包含几个单词的数组,我试图仅在 一个 空格处展开它,但由于某种原因展开时它也会计算空格.我该如何阻止它?

<?php

$string = "I'm just            so peachy, right now";
$string = explode(" ", $string);

$count = count($string);
$tempCount = 0;

while ($tempCount < $count) {
echo $string[$tempCount]."$tempCount<br>";
$tempCount++;
}

?>

实际输出:

I'm0
just1
2
3
4
5
6
7
8
9
10
11
12
so13
peachy,14
right15
now16

预期输出:

I'm0
just1
so2
peachy,3
right4
now5

使用 preg_split、http://php.net/manual/en/function.preg-split.php,这将使用正则表达式,因此您可以告诉它把所有连续的空格保持为一个。

$string = 'I\'m just            so peachy, right now';
$spaced = preg_split('~\h+~', $string);
print_r($spaced);

输出:

Array
(
    [0] => I'm
    [1] => just
    [2] => so
    [3] => peachy,
    [4] => right
    [5] => now
)

PHP 演示:http://3v4l.org/a5cg5
正则表达式演示:https://regex101.com/r/vO1qU0/1