正则表达式

(?<selector>[A-Za-z]+[\s]*)[\s]*{[\s]*((?<properties>[A-Za-z0-9-_]+)[\s]*:[\s]*(?<values>[A-Za-z0-9#,]+);[\s]*)*[\s]*}

测试用例

body { background: #f00; font: 12px Arial; }

预期结果

Array(
    [0] => Array(
            [0] => body { background: #f00; font: 12px Arial; }
            [selector] => Array(
                [0] => body
            )
            [1] => Array(
                [0] => body
            )
            [2] => font: 12px Arial; 
            [properties] => Array(
                [0] => font
            )
            [3] => Array(
                [0] => font
            )
            [values] => Array(
                [0] => 12px Arial
                [1] => background: #f00
            )
            [4] => Array(
                [0] => 12px Arial
                [1] => background: #f00
            )
        )
)

真实结果

Array(
    [0] => Array
        (
            [0] => body { background: #f00; font: 12px Arial; }
            [selector] => body 
            [1] => body 
            [2] => font: 12px Arial; 
            [properties] => font
            [3] => font
            [values] => 12px Arial
            [4] => 12px Arial
        )
    )

提前感谢任何帮助 – 这一直令我困惑我所有的下午！