Small guide about certain aspect of the PHP programming language

In PHP arrays are associative. Keys can be integer or string, while values can be of any type.

// Define an associative array with two entries
$array = array("key1"=>"value1",
               "key2"=>"value2",);
 
// Cycle on array entry
foreach ($array as $key => $value){
  echo $key." ".$value." ".$array[$key]."\n";
}

Output:

key1 value1 value1
key2 value2 value2