how combine multiple arrays into a single associate array using the arrays as keys

I have 2 arrays that i would like to loop through and combine into an associative array. I would like to use the 2 arrays as the keys for the new associative array. I am new to php so any and all help would be appreciated.

$id = array( 2, 4);

$qty = array( 5, 7);

array('id' => , 'qty' => );

Thanks in advance

I would like to output something like this

array(
'id' => 2,
'qty' => 开发者_如何学Go5),
array(
'id'=> 4,
'qty' => 7
)

You can do:

$result = array();

for($i=0;$i<count($id);$i++) {
  $result[] = array('id' => $id[$i], 'qty' => $qty[$i]);
}

Added by Mchl: Alternative, IMHO a bit clearer, but it's matter of opinion mostly

$result = array();

foreach($id as $key => $value) {
  $result[] = array('id' => $id[$key], 'qty' => $qty[$key]);
}

Also one-liner w/ lambda (PHP >= 5.3.0) and short array syntax [] (PHP >= 5.4)

$combined = array_map(function($id, $qty) {return ['id' => $id, 'qty' => $qty];}, $id, $qty);

or callback and old array() for earlier versions

function comb($id, $qty)
{
    return array('id' => $id, 'qty' => $qty);
}
$combined = array_map('comb', $id, $qty);