Question

I have two arrays:

$array1 = array(1=>1,10=>1,12=>0,13=>13);
$array2 = array(1=>"Hello",10=>"Test",12=>"check",13=>"error");

Here $array1 has keys and values. Now I want to take the first value from $array1(as 1) and I want to check if this is repeated in this array .

Here 1 is repeated two times so I want to take the two keys 1,10 and display the corresponding values of these keys from $array2. If the value in $array1 is not repeated then I want to just display the value of this key from $array2.

I want to get the output as follows:

Hello Test
check
error

That means in $array1 1,10 keys have the same value so the value of 1 and the value of 10 from $array2 is merged then displayed.

Like 12 has 0 this is not repeated so simply take value of 12 from $array2.

Like 13.

How can I do this?

Answer 1

This is really rough, but a simple way of doing it could be:

<?

$array1 = array(1=>1,10=>1,12=>0,13=>13);
$array2 = array(1=>"Hello",10=>"Test",12=>"check",13=>"error");

$prev = $array1[1];

foreach($array1 as $key => $val)
{
    if($val != $prev && $key != 1)
    {
        echo '<br />';
    }

    echo $array2[$key].' ';

    $prev = $val;
}

?>

Example: http://codepad.org/OpLdtStp

This assumes that you’re first key is always going to be 1 by the way.