What is the difference between “GLOBAL” and “STATIC” variable in PHP?

Question

What exactly is the difference between the GLOBAL and STATIC variables in PHP? And which one is preferable to use, when we want to use a variable in multiple functions?

Answer 1

Global variable is created before the function is created, but global keyword is added in function

$g_var = 1;

function test() {
  var_dump($GLOBAL['g_var']);
  global $g_var;
  var_dump($g_var);
} 

static is created and declared static in function

function test() {
  static $cnt = 0;
  $cnt ++;
  echo $cnt;
}

$i = 10;

while(--$i) test();