how to find empty value for specific key in multidimensional array

Question

i have array like this

<?php
$array =
    array
    (
        array (
            0 => 1,
            1 => 'php',
            2 => 11,
            3 => 11,
            4 => 11,
            5 => 11,
            6 => 11,
        ),
        array (
            0 => 1,
            1 => 'php',
            2 => 11,
            3 => 11,
            4 => 11,
            5 => 11,
            6 => ,
        ),

    );

and i want to search in this multi-array to find if the key [6] => is empty.if it was empty in any array return false so how to do this

foreach($array as $item)
{
    foreach($item as $key=>$value)
    {
        print($key);
        if($key=="6" && $value==NULL)
        {
            echo "found";
            return false;
        }else{
            echo "not found";
            return true;
        }
    }
}

Answer 1

$empty = false;
foreach($array as $item)
{
    if(empty($item[6]))
    {
            $empty=true;
            break;
    }
}
return $empty;

Answer 2

Here's an alternate for PHP >= 5.5.0 that checks for '', 0, null and false:

return !array_diff($six = array_column($array, 6), array_filter($six));

Answer 3

• First, it's recommended to use only one return in a function, so define a boolean value, and turn it to TRUE when the condition satisfies.
• Second, use break to stop the cycle(s) running (saves runtime) http://php.net/manual/en/control-structures.break.php
• Third, check keys and values appropriately. Your keys are numeric and you are comparing to a string "6". Use empty() if you are interested in that the value is an empty-ish value. Be aware that a numeric zero is an empty value. If you are specifically interested in NULL value, use === operator http://php.net/manual/en/function.empty.php http://php.net/manual/en/language.operators.comparison.php
• +1 See Yoda-style conditions http://en.wikipedia.org/wiki/Yoda_conditions

• ++1 Use K&R style indent, or don't use it. But do not try! ;) http://en.wikipedia.org/wiki/Indent_style#K.26R_style

  $found = false;
  foreach ($array as $item) {
      foreach ($item as $key => $value) {
          print($key);
          if (6 == $key && NULL === $value) { // or use 'empty($value)'
              echo "found";
              $found = true;
              break 2;
          } else {
              echo "not found";
          }
      }
  }
  return !$found;