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By learnphp222
via advancedphptutorial.blogspot.in
Published: Nov 26 2013 / 01:43

Today I am going to tell how to validate IPv4 / IP address using PHP. Simple function which will used to check client IP address is valid or not.
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lburnham123 replied ago:

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All this small code snippet does is to check whether a string could syntactically be an IPv4 address. That's a far cry from "validating" anything.

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