求一个正则匹配
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$s = 'E3ETC56-542NA1220156542N31036 3ZA0C0331';
preg_match_all('/([a-zA-Z0-9]\w{1})([\w|-]{10})\w\d(\d{4})|\w{5} \w{5}/', $s, $r);
print_r($r);
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Array
(
[0] => Array
(
[0] => E3ETC56-542NA12201
[1] => 31036 3ZA0C
)
[1] => Array
(
[0] => E3
[1] =>
)
[2] => Array
(
[0] => ETC56-542N
[1] =>
)
[3] => Array
(
[0] => 2201
[1] =>
)
)
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