php - 按空格和冒号拆分字符串，但如果在引号内则不拆分

Question

有这样一个字符串:

$str = "dateto:'2015-10-07 15:05' xxxx datefrom:'2015-10-09 15:05' yyyy asdf"

期望的结果是:

[0] => Array (
    [0] => dateto:'2015-10-07 15:05'
    [1] => xxxx
    [2] => datefrom:'2015-10-09 15:05'
    [3] => yyyy
    [4] => asdf
)

我得到的:

preg_match_all("/\'(?:[^()]|(?R))+\'|'[^']*'|[^(),\s]+/", $str, $m);

是:

[0] => Array (
    [0] => dateto:'2015-10-07
    [1] => 15:05'
    [2] => xxxx
    [3] => datefrom:'2015-10-09
    [4] => 15:05'
    [5] => yyyy
    [6] => asdf
)

也尝试使用 preg_split("/[\s]+/", $str) 但不知道如果值在引号之间如何转义。任何人都可以告诉我如何并请解释正则表达式。谢谢!

Answer 1

我会使用 PCRE 动词 (*SKIP)(*F),

preg_split("~'[^']*'(*SKIP)(*F)|\s+~", $str);

DEMO