regex parsing

codexo

I'm trying to parse input from an html form into three variables and have tried split, preg_split and can't seem to get it correct. Here is an example of the input string

64/30.53.88.207.in-addr.arpa

I'm trying parse the first number before the /, which can be 1 to 3 characters and put in one
variable, then parse the next number after the / and put into a variable, which also can be 1 to 3 numbers and put the rest (53.88.207.in-addr.arpa) into that last variable.
Any help would be appreciated.

--Codexo

theeper

Here is one way to do it, of course the Regex gods will be able to do it in one or two lines, and likewise they will flame me for posting this, but it works.

<?php 
$string = "64/30.53.88.207.in-addr.arpa";

$array1 = explode("/",$string);
$variable1 = $array1[0]; 
$array2 = explode(".",$array1[1]);
$variable2 = $array2[0]; 
unset($array2[0]);
$variable3 = implode(".",$array2);

echo "$variable1 <BR> $variable2 <BR> $variable3";
?>

gid

$t = '64/30.53.88.207.in-addr.arpa';
if(preg_match('/^([0-9]{1,3})\/([0-9]{1,3})\.([a-z0-9\.-]+)$/', $t, $r)) {
    echo $r[1] .' - '. $r[2] . ' - '. $r[3];
}

Dang, someone beat me to it I see after hitting preview, but oo, I guess I'm a regex God? 😉

codexo

Thanks to both of you (gid and theeper) for providing me w/ the code, did exactly what I needed.

Weedpacket

Originally posted by gid
Dang, someone beat me to it I see after hitting preview, but oo, I guess I'm a regex God? 😉

Dunno 'bout that, but theeper's code could've been shortened to

$string = "64/30.53.88.207.in-addr.arpa";

list($variable1, $array2) = explode('/',$string);
list($variable2, $variable3) = explode('.',$array2,2);

echo "$variable1 <BR> $variable2 <BR> $variable3";

...and yours to

$t = '64/30.53.88.207.in-addr.arpa';
if(preg_match('#^(\d{1,3})/(\d{1,3})\.([-a-z\d.]+)$#', $t, $r)) {
    echo $r[1] .' - '. $r[2] . ' - '. $r[3];
}

...but which is faster and which is easier to read?

theeper

Nice work Weedpacket : )