PHP separate even and odd values from an array - php

Question

I'm using the below code to separate odd and even and store it in different variable. When there are only 2 value available then it works fine but when the number value increases then it doesn't. I want to make it dynamic so that n number of values can be separated and stored correctly.
Example:
If the value of
$final_array = "PNL testing 1,10,PNL testing 2,35,";
It prints nicely:
$teams = "PNL testing 1, PNL testing 2";
$amount = "10, 35";
But when it increases from
$final_array = "PNL testing 1,10,PNL testing 2,35,";
to
$final_array = "PNL testing 1,10,PNL testing 2,35,Team 3,95,";
Then also it prints
$teams = "PNL testing 1, PNL testing 2";
$amount = "10, 35";
Please guide me through on where I am going wrong.
$res = array();
$result = preg_match_all("{([\w\s\d]+),(\d+)}", $final_array, $res);
$teams = join(', ', $res[1]); //will display teams
$amount = join(', ', $res[2]); //will display amount every team have
echo $teams . "<br />" . $amount;

Answer 1

I think you can totally drop the REGEX in favor of good old explode/implode with some logic in it:
$teams = array();
$amount = array();
$a = explode(',', trim(trim($final_array), ','));
foreach ($a as $i => $v)
if (($i % 2) == 0) $teams[] = trim($a);
else $amount[] = trim($a);
$teams = implode(', ', $teams);
$amount = impode(', ', $amount);
In the above code $tms and $amn are temporary arrays. In the foreach we take the exploded values from the string and we store them in those two arrays sorting them by key (if it's even then it's a team otherwise it's an amount).
At the end we just implode the new values into your output variables $teams and $amount.

Answer 2

It will much easier I think to use explode:
$result = explode(',', $final_array);
$teams = array();
$amount = array();
foreach ($result as $key => $value) {
if ($key % 2 == 0) {
$teams[] = $value;
} else {
$amount[] = $value;
}
}
$teams = implode(', ', $teams); //will display teams
$amount = implode(', ', $amount); //will display amount every team have
echo $teams."<br />".$amount;

Answer 3

I would change this part of Michal Trojanowski for more efficiency
foreach ($result as $key => $value) {
if ($key % 2 == 0) {
$teams[] = $value;
} else {
$amount[] = $value;
}
}
you see it has an extra condition we can remove it by like this
$length = count($result);//cache count result
for ($i = 0; $i < $length; $i += 2) {
$teams[] = $result[$i];
}
for ($i = 1; $i < $length; $i += 2) {
$amount[] = $result[$i];
}
Here the loop is running same but it just removes the the condition.