PHP else statement
From the menu go to: Insert > PHP Tags >else.

else works in conjunction with the if statement. Basically the if part checks for a condition. If it is true, the then statement is executed. If not, the else statement is executed.

Example:

<?php
   if ( weather == rain){
      echo "take umbrella";
      } else {
     echo "take sun screen";
   }
?>

See also:
What is PHP?
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