while means while. It is a loop statement like the for statement. It is used to repeat something.
The syntax is different from the for statement.
The while statement first declares a variable.
After that, we write a while(condition)
Enter the increment value in the statement.
As a source
$num = 1; //Variable declaration
while($num <= 10){ //do the following while num is less than or equal to 10
echo "{$num} output............... {$a} <br />"; // Do this sentence
$num++ //Here's the run. When executed, the num value becomes 2, and then back to the while statement, the result is true and the following is repeated.
}
Now type the output directly from 1 to 10 with the while statement !!!
<?php
$num = 1;
while($num <= 10){
echo " $num ";
$num++;
}
?>
if so!! Now output the odd sum from 1 to 10 using the while statement.
<?php
echo "Sum of odd numbers from 1 to 10<br />";
$num = 1; // Initial value declaration
$sum = 0; // Declaration of Variables in Cumulative Totals
while($num <= 10){
echo $num."Cumulative sum to";
$sum += $num;
$num+=2;
echo " = {$sum} <br />";
}
echo "The cumulative sum of odd numbers 1 through 10 is {$sum}.<br />";
?>
Declare an initial value of 1 for num.
Then we declare sum to accumulate the sum of odd numbers from 1 to 10.
Set the condition to 10 with the while statement
Accumulate the value of num in $sum. num is currently 1, so sum is 1.
After that, the value of num is +2. Then num becomes 3.
Going back to while and running as above, 1 3 5 7 9 accumulates in sum.
If you accumulate multiples of 5 from 1 to 100,
Set the condition of the while statement to 100
$num += 5