split string into multi arrays? - php

Question

i have a string like this one
$sitesinfo = 'site 1 titles-example1.com/
site 2 titles-example2.com/
site 3 titles-example3.com/
site 4 titles-example4.com/
site 5 titles-example5.com/';
i used to split lines into 1 array like this
$lines = explode("/",$sitesinfo);
then while i loop i got each line into an array object without problems
what i need to do to split each line into 2 pieces and add each piece into an array so the result be like this
$titles = array("site 1 titles","site 2 titles","site 3 titles","site 4 titles","site 5 titles");
$domains = array("example1.com","example2.com","example3.com","example4.com","example5.com");
so i can use them in script
i did a lot of tries but fail :(
Thanks

Answer 1

How about this:
foreach ($lines as $line) {
$t = explode('-', trim($line), 2);
if (count($t) < 2) {
echo "Failed to parse the line $line";
continue;
}
$titles[] = $t[0];
$domains[] = $t[1];
}
Explanation: each line split by '-' symbol into exactly 2 parts (if there's less, that's an error - the line doesn't contain '-', and thus shouldn't be processed at all). The first part is pushed into $titles array, the second - into $domains.

Answer 2

regex alternative:
$sitesinfo = 'site 1 titles-example1.com/
site 2 titles-example2.com/
site 3 titles-example3.com/
site 4 titles-example4.com/
site 5 titles-example5.com/';
preg_match_all('~([^-]+)-(.*)~',$sitesinfo,$matches);
$titles = array_map('trim',$matches[1]);
$domains = array_map('trim',$matches[2]);

Answer 3

First of all split the string into each line (by the line ending character).
Then split each line into two parts at the first - and add those parts to the result. You can later on give each part a name on it's own:
Example/Demo:
$lines = explode("\r\n", $sitesinfo);
$r = array(null, null);
foreach($lines as $line) {
list($r[0][], $r[1][]) = explode("-", $line, 2) + array(1 => NULL);
}
list($titles, $domains) = $r;
unset($r);
Or the regex variant (Demo):
preg_match_all('~([^-]+)-(.*)~', $sitesinfo, $matches);
list(, $titles, $domains) = $matches;
unset($matches);
Result:
array(5) {
[0]=>
string(13) "site 1 titles"
[1]=>
string(13) "site 2 titles"
[2]=>
string(13) "site 3 titles"
[3]=>
string(13) "site 4 titles"
[4]=>
string(13) "site 5 titles"
}
array(5) {
[0]=>
string(13) "example1.com/"
[1]=>
string(13) "example2.com/"
[2]=>
string(13) "example3.com/"
[3]=>
string(13) "example4.com/"
[4]=>
string(13) "example5.com/"
}