Peter Lauri wrote:
> Hi,
> 
>  
> 
> How do I add so that it checks for a comma , in this preg_match. I think the
> documentation is not that good for the pref_match:

it's a lot better than you spelling of preg_match. the subject of regexps is 
very
complex, the documentation reflects that - but to call them 'not that good' is
rather a disservice to the people that wrote them imho.

I taught myself regexps primarily using the php docs -
which is a testament to how good they are. :-)

> 
>  
> 
> preg_match('/^[a-z0-9-_\'() +]*$/i', $s);


$q = chr(39); // makes for easier cmdline testing !?E#$@
function test($s) {
        global $q;
        echo "\"$s\" is ",(preg_match("#^[a-z0-9\\-_\\$q\\(\\), \\+]*$#i", 
$s)?"true":"false"),"\n";
        // I escaped everything char that has special meaning in a regexp
        // backslashes are themselves escaped in double quotes strings.
        // I used different regexp delimiters (#) - just my preference
}

test("foo");
test(",");
test("()");
test("(123)");
test("(123,456)");
test("(+123,456)");
test(" (+123,456) ");
test(" $q(+123,456) $q");

> 
>  
> 
> /Peter
> 
>  
> 
>  
> 
> 

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