Working with Arrays

How to create an array of names with one statement

      
        $names = array('Ted Lewis', 'Sue Jones', 'Ray Thomas');

How to create an array with multiple statements

      
      $names = array();

      $names[0] = 'Ted Lewis';

      $names[1] = 'Sue Jones';

      $names[2] = 'Ray Thomas';

How to create an array of discounts with one statement

      
      $discounts = array(0, 5, 10, 15);

How to create an array of discounts with multiple statements

      
      $discounts = array();

      $discounts[0] = 0;

      $discounts[1] = 5;

      $discounts[2] = 10;

      $discounts[3] = 15;

How to use the `print_r()` function to view an array’s indexes and values

      print_r($names); // Output: Array ( [0] => Ted Lewis [1] => Sue Jones [2] => Ray Thomas )
      ");
      print_r($names); // Output: Array ( [0] => Ted Lewis [1] => Sue Jones [2] => Ray Thomas )
      echo("
\n");
      ?>
     

How to define a constant for an array (PHP 7.0 and later)

      
      define('MONTHS', array('Jan', 'Feb', 'Mar'));

An array can store one or more elements. Each element consists of an index and a value. An index can be either an integer or a string. A value can be any PHP data type.
By default, PHP uses integer indexes where 0 is the first element, 1 is the second element, and so on.