If the specified condition is true, loop through the block of code once and then repeat again and again.
code to be executed;
} while (condition);
echo "The number is: $a <br/>";
} while ($a <= 3);
The number is: 11
The number is: 12
The number is: 13
Do while loop is known as an exit control loop because it checks the condition at last(on exit).
Do while loop executes at least once when if the condition is false.