正则匹配

求一个正则匹配

PHP code

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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);

得到结果：

XML code

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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] => 
        )

)

现在如果$s = 'D ETC56-542NA1210756542N31036 3ZA0C0154'，这个正则的表达式 preg_match_all('/([a-zA-Z0-9]\w{1})([\w|-]{10})\w\d(\d{4})|\w{5} \w{5}/'）就不对了。求既能满足‘E3ETC56-542NA1220156542N31036 3ZA0C0331’，又能‘D ETC56-542NA1210756542N31036 3ZA0C0154’结果的表达式。

------解决方案--------------------
$s = 'E3ETC56-542NA1220156542N31036 3ZA0C0331';
preg_match_all('/([a-zA-Z0-9][\w\s]{1})([\w|-]{10})\w\d(\d{4})|\w{5} \w{5}/', $s, $r);
print_r($r);