Array Function [ Count ] / COUNT_RECURSIVE

count :

Count array elements.

Syntax :

  int count ( mixed var [, int mode])

Returns the number of elements in var, which is typically an array.

If var is not an array, 1 will be returned .

If the optional mode parameter is set to COUNT_RECURSIVE , count() will recursively count the array.

Example 1:

  <?php

                  $a[0] = 1;
                  $a[1] = 3;
                  $a[2] = 5;
                         $result = count($a);
                                        // $result == 3
                 $b[0]  = 7;
                 $b[5]  = 9;
                 $b[10] = 11;
                         $result = count($b);
                                       // $result == 3;
?> 

Example 2:

   <?php

                      $food = array('fruits' => array('orange', 'banana', 'apple'),
                                             'veggie' => array('carrot', 'collard', 'pea'));
                            // recursive count
                      echo count($food, COUNT_RECURSIVE);  // output 8
                              // count
                      echo count($food);      // output 2

?>