How do I combine two conditions in one if statement?

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PHP

Hi,
I am trying to combine two conditions to 1 if statement.
It is returning ' unexpected echo in line ..'

Can someone tell me the problem with this?

What I have tried:

if (isset($_POST["Complete"]) && [($daysLeft == $End)]{
   echo "You have now gained a total of $PointsD1 points.";
}