validate form help

need to check how value starts

[weddingm]

Hello,

I need help writing a code that will check if the first characters are http. I am accepting web adresses but don't want any values entered with the [....]

Thanks,
Matt

[omoutop]

you can use the strpos() function

or

str_replace("http://", '', $my_string);
This will work even if no http is present

[JohnCanyon]

If you wanted to display a message to your user, you could use a regex expression to check to see if http:// is present.

if(preg_match("/^http:\/\//i", $input)) {
echo 'Sorry, http:// is invalid input.';
}

[TheMadScientist]

Duplicate thread:
[webmasterworld.com...]

Not using Regular Expressions and why is briefly discussed.