Php For Beginners (Lesson 7)

In this lesson we will discuss loops in php. Loops are used to run a piece of code for a certain number of times. Php supports four types of loops:

1. While Loop
2. Do-While Loop
3. For Loop
4. Foreach Loop

While Loop

Syntax

While (condition)
{ code to be executed. }

Example

<?php 
$count=0; 
while ($count!=10) 
{ 
      echo $count."\n"; 
      $count++; 
} 
?>

The output of the above example will be counting from 0 to 9.

Do-While Loop

Syntax

Do
{ Code to be executed. }
While (condition)

Example

<?php 
$count=0; 
do 
{ 
      echo $count."\n"; 
      $count++; 
} 
while ($count!=10) 
?>

The output of the above example will be counting from 0 to 9.

For Loop

Syntax

for (initialize; condition; increment)
{ code to be executed. }

Example

<?php 
for ($i=0; $i<=10; $i++) 
{ 
      echo $count."\n"; 
} 
?>

The output of the above example will be counting from 0 to 10.

Foreach Loop

Syntax

foreach ($array as $value)
{ code to be executed. }

Example

<?php 
$count=array(0,1,2,3,4,5,6,7,8,9); 
foreach ($count as $value) 
{ 
   echo $value . "\n"; 
} 
?>

The output of the above example will be counting from 0 to 9.

References

http://www.php.net
http://www.w3schools.com

Ok guyz this is all for loops in php, keep practicing and for any queries don’t hesitate to comment and ask.


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