php - preg_match 中多个相同类型的匹配

Question

我想使用 preg_match 为带括号的子模式返回每个匹配项的数组。

我有这个代码:

    $input = '[one][two][three]';

    if ( preg_match('/(\[[a-z0-9]+\])+/i', $input, $matches) )
    {
        print_r($matches);
    }

这打印:

Array ( [0] => [one][two][three], [1] => [three] ) 

...只返回完整的字符串和最后一个匹配项。我希望它返回:

Array ( [0] => [one][two][three], [1] => [one], [2] => [two], [3] => [three] ) 

这可以用 preg_match 来完成吗？

Answer 1

使用 preg_match_all()与 +掉了。

$input = '[one][two][three]';

if (preg_match_all('/(\[[a-z0-9]+\])/i', $input, $matches)) {
    print_r($matches);
}

给出:

Array
(
    [0] => Array
        (
            [0] => [one]
            [1] => [two]
            [2] => [three]
        ),

    [1] => Array
        (
            [0] => [one]
            [1] => [two]
            [2] => [three]
        )
)