Question

我跟着字符串：

$str = "  father    mother brother   sister  ";

我需要获得包含4个元素的数组：＆＃34;父亲＆＃34;，＆＃34;母亲＆＃34;，＆＃34;兄弟＆＃34;和＆＃34;姐姐＆＃34;

Answer 1

这应该适合你：

<?php

    $str = "  father    mother brother   sister  ";
    $parts = preg_split('/\s+/', $str, -1, PREG_SPLIT_NO_EMPTY);
    print_r($parts);

?>

输出：

Array ( [0] => father [1] => mother [2] => brother [3] => sister )

Answer 2

如果单词之间有多个，可能是可变长度的空格，最简单的方法是使用preg_split：

$array = preg_split('/ +/', "  father    mother brother   sister  ", -1, PREG_SPLIT_NO_EMPTY);

测试：

php > $array = preg_split('/ +/', "  father    mother brother   sister  ", -1, PREG_SPLIT_NO_EMPTY);
php > var_dump($array);
array(4) {
  [0]=>
  string(6) "father"
  [1]=>
  string(6) "mother"
  [2]=>
  string(7) "brother"
  [3]=>
  string(6) "sister"
}

如果要按任何空格（包括标签和新行）拆分，可以尝试：

$array = preg_split('/\s+/', "  father    mother brother   sister  ", -1, PREG_SPLIT_NO_EMPTY);

Answer 3

使用explode()将字符串拆分为以空格字符（）分隔的片段，然后将返回的数组传递给array_filter()以删除空片段（您的字符串包含多个连续的分隔符）最后使用array_values()删除键（array_filter()后它们仍然稀疏）并重新编号从0开始的项目：

$str = "  father    mother brother   sister  ";
$array = array_values(array_filter(explode(' ', $str)));

print_r($array);

输出：

Array
(
    [0] => father
    [1] => mother
    [2] => brother
    [3] => sister
)

Answer 4

试试这个：

$str = "  father    mother brother   sister  ";
$tmpArr = explode(' ',$str);
$newArr = array();
foreach ($tmpArr AS $v) {if (!empty($v)) {$newArr[] = $v;}}
var_dump($newArr);

Answer 5

<?php
$result = explode(' ',$str);
array_walk($result,'trim');
function trim($str){
   $str = trim($str);
}
?>

我需要从字符串（PHP）生成数组

5 个答案: