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正则基础题解决方案

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Release: 2016-06-13 12:03:30
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正则基础题
$url ="xxxxxxxxxxxxxxxxxxxxxx
,111111111111:
xxxxxxxxxxxxxxxxxxx";
    $preg = "/^,([0-9]+):$/im";
    preg_match_all($preg,$url,$a);
    print_r($a);    
?>

请问为何此例子在Window下无法正常匹配,而在Linux下正常匹配
是因为换行符不同 \n\r 和 \n 嘛?PHP正则基于Linux?
还是其他原因
------解决方案--------------------
你的理解是正确的,写成这样就通用了
$preg = "/^,([0-9]+):\s*$/im";

其实 : 就已经可以很好地判断结束了,不需要行尾 $
$preg = "/^,([0-9]+):/im";

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