---
title: Learn About Php Loops
---
Loops are blocks of code that execute a specified number of times. Using loops reduces the number of lines of code.

PHP works with 4 different types of loops:

*   While loop
*   Do...while loop
*   For loop
*   Foreach loop

## While loop

The `while` loop continues to excecute as long as the specified condition is true.

```php
<?php  
    while(condition is true)  
    {  
        execute code;  
    }  
?>  
```
Example:
```php
<?php  
    $x = 1;
    while($x <= 3) 
    { 
        echo "x=$x ";
        $x++;
    } 
?>
```
Output:
```php
    x=1 x=2 x=3
```
   
## Do...while loop

In the `do...while` loop the block of code is executed before the condition is checked.

```php
<?php
    do {
        execute code;
    } while (condition);
?>
```
Example:
```php
<?php
    $x= 1;
    do {
        echo "x=$x ";
        $x++;
    } while ($x < 5);
?>
```
Output:
```php
    x=1 x=2 x=3 x=4
```

## For loop

The `for` loop is used when the number of times the block is to be executed is known in advance.

```php
<?php
    for (variable initialisation; test condition; increment)
    { 
        execute code; 
    }
?>
```
Example:
```php
<?php
    for ($x=1 ; $x <= 4 ; $x++)
    {
        echo "x= $x "; 
    }
?>
```
Output:
```php
    x=1 x=2 x=3 x=4
```

## Foreach loop

The `foreach` loop helps in traversing through arrays. 

```php
<?php
    foreach ($array as $value)
    { 
        executable code; 
    }
?>
```
Example
```php
<?php
    $numbers= array("One", "Two", "Three"); 
    foreach ($numbers as $value)
    {
        echo "$value ";
    }
 ?>
```
Output:
```php
     One Two Three
```