Question

How can I take several elements from the array at once? Like foreach is for only one, how can I get more than one in each iteration?

$data = array(1,2,3,4,5,6);
foreach($data as $a and $b) // pseudocode
{
    echo $a + $b;
}

Is there a way to do it?

Answer 1

You can try

$data = array(1,2,3,4,5,6);
echo "<pre>";

foreach loop using array_chunk

foreach ( array_chunk($data, 2) as $v ) {
    $v[1] = isset($v[1]) ? $v[1] : 0;
    echo $v[0] + $v[1], PHP_EOL;
}

For Loop

for($i = 0; $i < count($data); $i += 2) {
    $v = isset($data[$i + 1]) ? $data[$i + 1] : 0;
    echo $data[$i] + $v, PHP_EOL;
}

while loop

$i = 0;
while($v = array_slice($data, $i, 2)){
    $v[1] = isset($v[1]) ? $v[1] : 0;
    echo $v[0] + $v[1], PHP_EOL;
    $i += 2;
}

Output

3
7
11