Question

How to get all defined variables in PHP

Answer 1

echo "<pre>";
$a = array(1, 2, 3, 4);
$n = 100;

$arr = get_defined_vars();

print_r($arr["a"]);
print_r($arr["n"]);

print_r($arr["argv"]);

print_r(array_keys(get_defined_vars()));
echo "</pre>";


/*
run:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
)
100
Notice:  Undefined index: argv in C:\xampp\htdocs\webshopy.com\test.php on line 12
Array
(
    [0] => _GET
    [1] => _POST
    [2] => _COOKIE
    [3] => _FILES
    [4] => a
    [5] => n
    [6] => arr
    [7] => php_errormsg
)

*/

 

70+ SQL courses for beginners and professionals