Regular expression newbie question

[Joseph Luner]

How do I write "not" in regular expression? I am new to reg exp. I want to
check the string which does not contain "http://"

I wrote /\bhttp:\/\/\b/

It returns True if the string contains "http://" , however what I want is to
make it return False when it contains "http://". How do I write it?
Thanks...




---
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[Cameron]

Joseph Luner wrote:

> How do I write "not" in regular expression? I am new to reg exp. I want to
> check the string which does not contain "http://"
>
> I wrote /\bhttp:\/\/\b/
>
> It returns True if the string contains "http://" , however what I want is to
> make it return False when it contains "http://". How do I write it?
> Thanks...
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system ([url]http://www.grisoft.com[/url]).
> Version: 6.0.576 / Virus Database: 365 - Release Date: 1/30/2004
>
>

Don't use a regular expression for that, it's not needed strpos would be
faster.


if (!strpos("http://www.php.net", "http://") === FALSE)
echo "http:// not found in string";
else
echo "http:// found in string";


this will obviously echo http:// found in string

[Cameron]

Cameron wrote:

> Joseph Luner wrote:
>

>> How do I write "not" in regular expression? I am new to reg exp. I
>> want to
>> check the string which does not contain "http://"
>>
>> I wrote /\bhttp:\/\/\b/
>>
>> It returns True if the string contains "http://" , however what I want
>> is to
>> make it return False when it contains "http://". How do I write it?
>> Thanks...
>>
>>
>>
>>
>> ---
>> Outgoing mail is certified Virus Free.
>> Checked by AVG anti-virus system ([url]http://www.grisoft.com[/url]).
>> Version: 6.0.576 / Virus Database: 365 - Release Date: 1/30/2004
>>
>>

>
> Don't use a regular expression for that, it's not needed strpos would be
> faster.
>
>
> if (!strpos("http://www.php.net", "http://") === FALSE)
> echo "http:// not found in string";
> else
> echo "http:// found in string";
>
>
> this will obviously echo http:// found in string

Err sorry, ignore the ! bfore strpos

~Cameron

[Joseph Luner]

I know I can do it with strpos, but I need to use regular expression. Would
you tell me how?

To be exact, I am using a library called Vdaemon (a .NET like form
validation library via XML for PHP, it's very very cool)
[url]http://www.x-code.com/vdaemon_web_form_validation.php[/url]




"Cameron" <foo@bar.invalid> wrote in message
news:bvkikl$7ch$1@news5.svr.pol.co.uk...

> Joseph Luner wrote:

> > How do I write "not" in regular expression? I am new to reg exp. I

want to

> > check the string which does not contain "http://"
> >
> > I wrote /\bhttp:\/\/\b/
> >
> > It returns True if the string contains "http://" , however what I want

is to

> > make it return False when it contains "http://". How do I write it?
> > Thanks...
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system ([url]http://www.grisoft.com[/url]).
> > Version: 6.0.576 / Virus Database: 365 - Release Date: 1/30/2004
> >
> >

>
> Don't use a regular expression for that, it's not needed strpos would be
> faster.
>
>
> if (!strpos("http://www.php.net", "http://") === FALSE)
> echo "http:// not found in string";
> else
> echo "http:// found in string";
>
>
> this will obviously echo http:// found in string

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system ([url]http://www.grisoft.com[/url]).
Version: 6.0.576 / Virus Database: 365 - Release Date: 1/30/2004

[Duyet The Vo]

PHPEdit has a nice RegExpEditor tool

[url]http://www.phpedit.net/products/RegExpEditor/[/url]




"Joseph Luner" <J0s4phLun3r_N0SPAMMM@yahoo.com> wrote in message
news:RgjTb.94314$9Ce1.89193@news04.bloor.is.net.ca ble.rogers.com...

> How do I write "not" in regular expression? I am new to reg exp. I want

to

> check the string which does not contain "http://"
>
> I wrote /\bhttp:\/\/\b/
>
> It returns True if the string contains "http://" , however what I want is

to

> make it return False when it contains "http://". How do I write it?
> Thanks...
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system ([url]http://www.grisoft.com[/url]).
> Version: 6.0.576 / Virus Database: 365 - Release Date: 1/30/2004
>
>

[Beable van Polasm]

"Joseph Luner" <J0s4phLun3r_N0SPAMMM@yahoo.com> writes:

> How do I write "not" in regular expression? I am new to reg exp. I want to
> check the string which does not contain "http://"
>
> I wrote /\bhttp:\/\/\b/
>
> It returns True if the string contains "http://" , however what I want is to
> make it return False when it contains "http://". How do I write it?
> Thanks...

<?php
error_reporting(E_ALL);

$str1 = "http://google.com";
$str2 = "google.com";

if (preg_match("/\bhttp:\/\/\b/", $str1))
{
echo "str1 matches http\n";
}
else
{
echo "str1 doesn't match http\n";
}

if (preg_match("/\bhttp:\/\/\b/", $str2))
{
echo "str2 matches http\n";
}
else
{
echo "str2 doesn't match http\n";
}

if (! preg_match("/\bhttp:\/\/\b/", $str1))
{
echo "str1 doesn't match http\n";

}
else
{
echo "str1 matches http\n";
}

if (! preg_match("/\bhttp:\/\/\b/", $str2))
{
echo "str2 doesn't match http\n";
}
else
{
echo "str2 matches http\n";
}

?>

--
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The guy's not even the real Jean-Luc Picard. Ignore him. -- Etienne Rouette
[url]http://beable.com/[/url]