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Asked: 2026-06-06T16:48:36+00:00

I have a large string having dates, Ip addresses etc.. I need to split

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I have a large string having dates, Ip addresses etc.. I need to split the content with date and did that with 

[0-9]+[/.-])([0-9]+[/.-][0-9]+

But it also split using the IP addresses.
What the only difference between date and IP address is date have 3 numbers and Ip have 4 numbers like 28.06.2012 and 178.15.16.314. How can I omit the IP address from splitting the content?

Sorry. One more thing i forgot to add. That is there are other possibilities for the format of date like 25-06-12, 2012-06-25, 12-06-25.

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1 Answer

  1. Editorial Team

    What the only difference between date and IP address is date have 3 numbers and Ip have 4 numbers like 28.06.2012 and 178.15.16.314. How can I omit the IP address from splitting the content?

    First of all, the dates have four numbers representing the year. Second, an IP address has four octets. So the following should do the trick (not tested):

    '~(\d{1,2}[.-]\d{1,2}[.-]\d{4})~'

    Tested:

    <?php
$date = '28.12.2012';
$ip = '192.168.0.1';

$regex = '~(\d{1,2}[.-]\d{1,2}[.-]\d{4})~';

var_dump( preg_match( $regex, $date ) ); // int(1)
var_dump( preg_match( $regex, $ip ) ); // int(0)
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