<? $a=5; $b='a'; $$b=100; $b is a simple variable and $$b

If the variable $a is equal to 5 and variable $b is equal to
character a, what’s the value of $$b?

Can anyone explain how's the value of $$b=100

Question Posted / modi[achir communication]

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Answer Posted / modi[achir communication]

<?
$a=5;
$b='a';
$$b=100;
$b is a simple variable and $$b is a reference variable that
means in memory $$b will be refer to $b. Suppose in memory
$b variable is in address 100 then $$b will be refer $b at
address 100 that means $$b will contain 100.
?>

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