从模式中的字符串获取数组 - key1：val1，val2，..; key2：val1，

Question

I would like to get from a string like this

color:blue,red;size:s

to an associative multiarray

[
    color => [blue,red],
    size => [s]
]

I tried with ([a-z]+):([a-z^,]+) but it's not enough; I don't know how to recursive it or something.

Answer 1

I wouldn't use regular expressions for something like this. Instead use explode() several times.

<?php

$str = 'color:blue,red;size:s';

$values = explode(';', $str);

$arr = [];
foreach($values as $val) {
    $parts = explode(':', $val);
    $arr[$parts[0]] = explode(',', $parts[1]);
}

Output:

Array
(
    [color] => Array
        (
            [0] => blue
            [1] => red
        )

    [size] => Array
        (
            [0] => s
        )

)