Question

I am facing a strange problem in array_push function of php.

Lets see my code:

$sets_collection=array();
foreach($result['ques'] as $val){
      $sets_collection=array_push($sets_collection,$val['set']);
      }

than it gives me the error:
Message: array_push() expects parameter 1 to be array, integer given

But when i do this ,it works fine:

$sets_collection=array();
      $i=0;
        foreach($result['ques'] as $val)
        {
        $sets_collection[$i]=$val['set']; 
        $i++;
        }

My question is why this happen,is it necessary that there should be a index of an array than we can perform the push operation?? because in my 1st case the array $set_collection has not an any index and please let me know why this happened??

Answer 1

Try this

$sets_collection=array();

foreach($result['ques'] as $val){
    array_push($sets_collection,$val['set']); 
}