What will be the result of executing following code?
$k = 0;
$p = 0;
for($i = 0 ; $i < 3 ; $i++) 
    $k += $i; 
echo $k; 
 
for($i = 0 ; $i < 3 ; ++$i) 
    $p += $i; 
echo $p; 
Explanation
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