在php中分解多个分隔符答案

【问题标题】：explode multiple delimiters in php在php中分解多个分隔符
【发布时间】：2021-10-25 08:30:24
【问题描述】：

我的数组看起来像：

{flower},{animals},{food},{people},{trees}

我想和{、, 和}一起爆炸。

我的输出应该只包含大括号内的单词。

我的代码：

$array = explode("},{", $list);

这段代码执行后$array会是

$array = Array ( 
    [0] => {flower 
    [1] => animals 
    [2] => food
    [3] => people 
    [4] => trees} 
)

但输出数组应该是：

$array = Array ( 
    [0] => flower 
    [1] => animals 
    [2] => food
    [3] => people 
    [4] => trees 
)

谁能告诉我如何修改我的代码来获取这个数组？

【问题讨论】：

正则表达式匹配更好
你可以先用trim剪掉外面的花括号，explode("},{", trim($list, '{}'))

标签： php arrays explode

【解决方案1】：

您可以尝试使用 RegEx 提取单词而不是拆分字符串：

$list = "{flower},{animals},{food},{people},{trees}";

// Match anything between curly brackets
// The "U" flag prevents the regex to make a single match with the first and last brackets
preg_match_all('~{(.+)}~U', $list, $result);

// Only keep the 1st capturing group
$words = $result[1];
var_dump($words);

输出：

array(5) {
  [0]=>
  string(6) "flower"
  [1]=>
  string(7) "animals"
  [2]=>
  string(4) "food"
  [3]=>
  string(6) "people"
  [4]=>
  string(5) "trees"
}

【讨论】：

【解决方案2】：

我会像下面那样选择 preg_split

<?php

$list = "{flower},{animals},{food},{people},{trees}";
$array = preg_split('/[},{]/', $list, 0, PREG_SPLIT_NO_EMPTY);
print_r($array);
?>

输出是

Array
(
    [0] => flower
    [1] => animals
    [2] => food
    [3] => people
    [4] => trees
)

【讨论】：