Exclude HTML, URI's, E-Mail or Telephone Numbers

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Up front, I know little about PHP but am putting together a design for functionalality on a web site written in PHP.

Can anyone point me in the right direction for checking if a free text field has any HTML, URI's, E-Mail addresses or telephone numbers in it.

The idea is that a user can enter a message that will be sent anonymously to another user and we need to prevent, as much as possible, circumventing the system for further communication as we will be charging them for contact details.

As I said, I really need some help on how this can be done using PHP so I can explain it to the developers.

Any help will be much appreciated.

Posted 25-Jul-12 1:16am

Nagy Vilmos

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Sergey Alexandrovich Kryukov 25-Jul-12 13:09pm

Do you need "checking" it or filtering out of the undesired information (which is more usually used)? And what's the problem?
--SA

1 solution

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Sergey Alexandrovich Kryukov · Accepted Answer · 2012-07-25T07:12:00

Solution 1

Short answer: use Regular Expressions:
http://php.net/manual/en/book.pcre.php[^].

Everything else depends on particular specifications you have to develop. There is no much to advise here: this is not about some expert recommendations but rather about some good volume of work and getting experience with those techniques.

—SA

Posted 25-Jul-12 7:12am

Sergey Alexandrovich Kryukov

Updated 25-Jul-12 7:13am

v2

Comments

Nagy Vilmos 26-Jul-12 3:59am

Thanks SA, I'll have to learn more about PHP then I'm happy about X|

Sergey Alexandrovich Kryukov 26-Jul-12 15:31pm

You are welcome. Happy learning,
--SA