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PHP while Loop

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The while loop - Loops through a block of code as long as the specified condition is true.

The PHP while Loop

The while loop executes a block of code as long as the specified condition is true.

Syntax

while ( condition is true) {
  code to be executed;
}

Examples

The example below displays the numbers from 1 to 5:

Example

<?php
$x = 1;

while($x <= 5) {
  echo "The number is: $x <br>";
  $x++;
}
?>
Try it Yourself »

Example Explained

  • $x = 1; - Initialize the loop counter ($x), and set the start value to 1
  • $x <= 5 - Continue the loop as long as $x is less than or equal to 5
  • $x++; - Increase the loop counter value by 1 for each iteration

This example counts to 100 by tens:

Example

<?php
$x = 0;

while($x <= 100) {
  echo "The number is: $x <br>";
  $x+=10;
}
?>
Try it Yourself »

Example Explained

  • $x = 0; - Initialize the loop counter ($x), and set the start value to 0
  • $x <= 100 - Continue the loop as long as $x is less than or equal to 100
  • $x+=10; - Increase the loop counter value by 10 for each iteration

PHP Exercises

Test Yourself With Exercises

Exercise:

Output $i as long as $i is less than 6.

$i = 1; 

 ($i < 6) 
  echo $i;
  $i++;


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