Add to Array - Please Help

[chanw1]

Hi Everyone

 

I am stumped on a array problem and I was hoping someone could help

 

Is there a way to add to an array value if a existing array key exists?

 

I have 2 variables - ingredients and qty

 

I'm looping through db results and I would like to build an array with a final total qty

 

The array key will coming up more than once during the loop and I would like to add to that value if that array key exists.

 

For example

 

loop {

 

test[$row['ingredient'] = $row['qty'];

 

}

 

 

results will be

 

Array ( [Flour] => 11 [Milk] => 5 [sugar] => 2)

 

Any help would be greatly appreciated.

 

Thank You

[Garethp]

foreach($row as $k=>$v)

{

$test[$k] = $v;

}

[Adam]

During your loop:

 

if (array_key_exists($row['ingredient'], $ingredients))
{
    // not sure if you wanted to add (+) the quantity value here... 
    $ingredients[$row['ingredient']] += $row['quantity'];
   // or just increment the value..
   // $ingredients[$row['ingredient']]++;
}
else
{
    // same here, if adding..
    $ingredients[$row['ingredient']] = $row['quantity'];
    // if incrementing..
    // $ingredients[$row['ingredient']] = 1;
}

 

Hopefully that made sense?

[chanw1]

Thank You So Much!!!

[Adam]

No problem