将键/值字符串转换为关联数组 [英] Convert key/value string into associative array

问题描述

例如，我的字符串可能如下所示:

As an example, my string might look like this:

first_name:Tom last_name:Jones email:[e-mail]

我希望我的数组如下所示:

I would want my array to look like the following:

Array (
  ['first_name'] => 'Tom',
  ['last_name'] => 'Jones',
  ['email'] => '[e-mail]'
)

然后将根据列和值将其用于搜索数据库.因此，我首先需要检索键(例如first_name)和值(例如Tom)以进行搜索.

This will then be used to search the database based on the column and value. So I will first need to retrieve the key (such as first_name) and the value (like Tom) for searching.

我有以下正则表达式:

((?:[a-z][a-z0-9_]*))

这有效.它会找到:之前和:之后的所有字符串，但是我无法弄清楚如何解析它以将其放入所需格式的数组中.

This works. It finds all strings before : and after :, but I cannot figure out how to parse this to put it in an array of the format I need.

推荐答案

您可以先在一个空格上先 explode()您的字符串，然后分别使用 array_map()冒号的价值.之后，只需使用 array_column()将键和值放置到位:

You can just explode() your string first on a space and then with array_map() each value on a colon. After that just use array_column() to get the keys and values into place:

$result = array_column(array_map(function($v){
    return explode(":", $v);
}, explode(" ", $str)), 1, 0);

您还可以在开始时使用正则表达式来完成此操作，并使用命名的捕获组，例如

You can also do it with a regex as you started and use named capturing groups, e.g.

preg_match_all("/(?P<keys>\w+):(?P<values>[\w@]+)/", $str, $m);
$result = array_combine($m["keys"], $m["values"]);

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