PHP preg 替换只允许数字

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时间:2020-08-26 03:11:18  来源:igfitidea点击:

PHP preg replace only allow numbers

phppreg-replace

提问by Ryan

How can I modify this existing preg_replace to only allow numbers?

如何修改这个现有的 preg_replace 以只允许数字?

function __cleanData($c) 
{
    return preg_replace("/[^A-Za-z0-9]/", "",$c);
}

回答by lonesomeday

I think you're saying you want to remove all non-numeric characters. If so, \Dmeans "anything that isn't a digit":

我认为您是说要删除所有非数字字符。如果是这样,则\D表示“任何不是数字的东西”:

preg_replace('/\D/', '', $c)

回答by qbert220

Try this:

尝试这个:

return preg_replace("/[^0-9]/", "",$c);

回答by oezi

This should do what you want:

这应该做你想做的:

preg_replace("/[^0-9]/", "",$c);

回答by Danon

You could also use T-Regx library:

您还可以使用T-Regx 库

pattern('\D')->remove($c)

T-Regx also:

T-Regx 还:

  • Throws exceptions on fail (not false, nullor warnings)
  • Has automatic delimiters (delimiters are not required!)
  • Has a lot cleaner api
  • 失败时抛出异常(不是falsenull或警告)
  • 具有自动分隔符(不需要分隔符!)
  • 有很多更干净的api