$i = 10; $c = "10"; $ec = "10 котят"; echo $i + $c; echo $i + $ec; echo $c + $ec; $sum = $c + $ec; echo $sum;
Standard input is empty
$i = 10; $c = "10"; $ec = "10 котят"; var_dump($i); var_dump($c); var_dump($ec); echo $i + $c; echo $i + $ec; echo $c + $ec; $sum = $c + $ec; echo $sum;