Question

I want to get all keys of the array an compare each key to number, somthing like that:

array(
[0] => 7
[1] => 8
[2] => 4
[3] => 6
)

if (6 != EACH KEY OF ARRAY) {
    so...
}

The condition wont show because there is [3] => 6 and the key 6 = 6 of course.

There is a function to do it? somthing else?

Answer 1

.

foreach($array as $key => $val)
{
  if (6 != $key) {
   // so...
  }
}

Example:

$array = array(7, 8, 4, 6);

foreach($array as $key => $val)
{
  if (6 != $key) {
   echo '6 is not equal to ' . $key . '<br />';
  }
  else {
   echo '6 is equal to ' . $key . '<br />';
  }
}

Result:

6 is not equal to 7
6 is not equal to 8
6 is not equal to 4
6 is equal to 6

If however, you want to check if the value of 6 is present in the array, use in_array like this:

if (in_array(6, $array)) {
  // 6 is present in the array
}