Learning php these days. At first sorry if its a dumb query.
<?php
$cfg['x']['y']['z'] = "TRUE";
$cfg['x']['y'] = "FALSE";
print_r($cfg['x']['y']['z']); //what to change here to get required output
?>
Output: F
But my expected output is TRUE
What should I change?
Here $cfg['x']['y']['z'] no longer exists because you overwrote $cfg['x']['y'] which contained $cfg['x']['y']['z'].
$cfg['x']['y'] = "FALSE";
Here you try to get the 'z' element of the $cfg['x']['y'] variable. It's a string since you put FALSE in quotes. 'z' is converted to zero by PHP's type juggling. So the 0 element of the string 'false is F
print_r($cfg['x']['y']['z']);
There's no real way to make this work the way you intend. You should be assigning FALSE to a new variable or turn $cfg['x']['y'] into an array so it can hold multiple values:
$cfg['x']['y'] = array(
'z' = "TRUE",
'newKey' = ""
);
FYI, if you intend to use "TRUE" and "FALSE" as boolean values you should not wrap them in quotes or else they are strings. As a result both "TRUE" and "FALSE" evaluate to true also due to PHP's type juggling.
$cfg['x']['y']['z']is basically($cfg['x']['y'])['z']- and after the second assignment,$cfg['x']['y']is a string ("FALSE"), not an array. Any attempt to access it as an array is incorrect by definition; it's helpfulness of PHP that allow you to do it, but'z'is treated as a zero index at a string.