PHP Loop

Loop execute some statement many times till the condition is fullfill.

There are three type or loops. these loops do same work execute statement many times.

• While loop
• Do While loop
• For Loop

while loop

while loops are the simplest type of loop in PHP. They behave just like their C counterparts. The basic form of a while statement is:

===========================

while (expr)

    statement

===========================

In the while loop it first check the condition then body of the loop will be executed many times untill the condition is fullfill.

Syntax
===========================
while (condition)
 {
  Code here.
 }
===========================
Exercise 1:
===========================
<?php
$i=1;
while($i<=5)
  {
  echo "Number".$i;
  $i++;
  }

?> Output

Number 1

Number 2

Number 3

Number 4

Number 5

do while

Exercise 2:

===========================
<?php

$i=1;
do
  {
  echo "Number".$i;
  $i++;
  }while($i<=5)
?>
Output

Number 1

Number 2

Number 3

Number 4

Number 5
===========================

For loop

In For loop then statement will be excuted till the condition is fullfill.

===========================
for (initilization; condition; increment)
{
  code here...;
}

===========================
Exercise 1:

<?php

for ($i=1; $i<=5; $i++)

  {

  echo "Number".$i;

  }

?>
Output

Number 1
Number 2
Number 3
Number 4
Number 5