Foreach & Arrays in PHP - php

Question

I'm terribly confused on how I should be writing this function...it basically scores a test, and it WORKS for one user's values.
Let's say I want the values for the following user: $id = 2...this works! If $id = array(2,3,4,5) it doesn't work!
function get_score_a($id){
// Case 4
foreach($this->get_results_a($id,4)->row() as $key=>$a){
if ($a >= 2 && $a <= 4) {
$score_a += 2;
} else if ($a > 4 && $a < 8) {
$score_a += 3;
} else if ($a > 8) {
$score_a += floor($a - 8) * .5;
$score_a += 3;
}
};
return $score_a;
}
function get_results_a($id, $method) {
$select_cols = array(
1 => array('a_1','a_2','a_4'),
2 => array('a_6','a_8','a_11','a_12','a_14'),
3 => array('a_3','a_10'),
4 => array('a_5','a_7','a_9','a_13')
);
return $this->db->select($select_cols[$method])
->where_in('id', $id)
->get('be_survey');
}
This returns a score...however, if I run multiple ids...it just adds up all the numbers, I think...
Instead I need this to output separate scores for individual users...
May it be noted that I'm a total noob! So vivacious explanations are very much appreciated. :)
Edit
Please review my code...as I should have been more clear! Sorry!
I apologize! In summation, this selects the correct values from the table, based on
And yes, my eyes hurt too!
Edit
I am too hasty! This is a Codeigniter project!

Answer 1

Firstly, there is no row() for arrays.. just use foreach ($array as $key=>$value)
Secondly, inside the foreach loop $score_b is being incremented on each run with its previous value. So, your code is outputting the sum of all player scores.
use:
foreach(array(5,5,5,6,7,78,8,7,7,6,5) as $key=>$a){
if ($a >= 0 && $a <= .5) {
$score_b[$key] += 0;
} else if ($a > .5 && $a < 2) {
$score_b[$key] += 1;
}
else if ($a > 2 && $a < 4) {
$score_b[$key] += 2;
}
else if ($a > 4) {
$score_b[$key] += floor($a - 8) * .5;
$score_b[$key] += 2;
}
};
$score_b will now be an array of scores.
EDIT:
Add the following in your code:
$id = array(2,3,4,5);
function get_score_array($ids) {
foreach ($ids as $id) {
$scores[$id] = get_score_a($id);
}
return $scores;
}
$scores will now be an array of $id=>$score pairs.
Also, adjust the above code, as per your framework (which I guess you are using)

Answer 2

There is no such method called row() on array. In fact, an array isn't strictly an object, so it doesn't have methods.
So, first of all, get rid of the ->row() invocation.
Second, where are you pushing these scores onto an array? I don't see where that happens in your code. Initialize an empty array before the foreach loop, and push the $score_b variable onto the array at the end of the loop.

Answer 3

Set a $userID variable outside the foreach loop like this:
$userScores = array(
'bobby' = > array(5,5,5,6,7,78,8,7,7,6,5),
'sue' = > array(5,5,5,6,7,78,8,7,7,6,5),
'joe' = > array(5,5,5,6,7,78,8,7,7,6,5)
);
foreach($userScores as $name => $a){
$score_b[$name] = 0; //initialize
if ($a >= 0 && $a <= .5) {
$score_b[$name] += 0;
} else if ($a > .5 && $a < 2) {
$score_b[$name] += 1;
}
else if ($a > 2 && $a < 4) {
$score_b[$name] += 2;
}
else if ($a > 4) {
$score_b[$name] += floor($a - 8) * .5;
$score_b[$name] += 2;
}
};
your end result should be something like (I didn't do any actual math)
$score_b['bobby'][100]
$score_b['sue'][75]
$score_b['joe'[90]