Re: Check contents of variable
| From: | PHP List | Date: | Tue, 20 Nov 2001 22:32:04 +0000 |
| Subject: | Re: Check contents of variable | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-75306@lists.php.net to get a copy of this message | ||
Correct, the third parameter is for the number of characters to read,
nothing means entire string.
Function details can be found here:
http://download.php.net/manual/en/function.substr.php
> > How about:
> >
> > if (substr($url,0,7) <> "http://")
> > $url = "http://" . $url;
>
> Thanks!
>
> That´s just the function i am looking for. I looked it up in the manual.
> Correct me if i am wrong - if i don´t set the second parameter in substr
it
> just continues to read until the variable is finished? If i set it to 7
(as
> above) it stops reading after 7 characters?
>
> - Daniel
>
>
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