Preg_match_all help for extracting all css class

I have following file

.active{ color:#333333; }
input,select,.titulo1{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 11px;
}

textarea{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
border: 1px solid #000000;
}

td,.Estilo1 {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
}

hr {
line-height: 1px;
color: #000000;
}

Code (markup):

I need to extract only css class not other thing like ID etc. That means I need all those thing that are start with dot(.).

Desired Output of above code:

.active{ color:#333333; }
input,select,.titulo1{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 11px;
}

Code (markup):

Since .active is the only css class. \


Please help to give me a pattern

Thanks

 

If .active is the only CSS class, then why is your desired output:

...?

.active is just:

.active{ color:#333333; }

Code (markup):

Anyway, this seems to work for me:

'~(?:^|[\s\}>])((\.[\w-]+)\s*\{[^\}]+\})~'

PHP:

(Assuming you JUST want to get .active, in this case.)

 

<?php
$x = ".active{ color:#333333; }
input,select,.titulo1{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 11px;
}

textarea{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
border: 1px solid #000000;
}

td,.Estilo1 {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
}

hr {
line-height: 1px;
color: #000000;
}";
preg_match_all("/(\,|\..*?)\{/si",$x,$y);
print_r($y);

?>

PHP:

try that

RETURNS

Array ( [0] => Array ( [0] => .active{ [1] => .titulo1{ [2] => .Estilo1 { ) [1] => Array ( [0] => .active [1] => .titulo1 [2] => .Estilo1 ) )