How to loop through a PowerShell array

In this tutorial, we will discuss how to loop through an array in PowerShell using for loop. Also, we will see, PowerShell loop through an array using ForEach-Object loop, While loop, do-while loop, and do-until loop.

If you are new to PowerShell, you can check the below tutorials:

• What is PowerShell Array
• How to create an array in PowerShell from CSV file
• How to create and use PowerShell ArrayList
• What is a PowerShell array and how to create an array in PowerShell? (Video tutorial)
• How to create an array in PowerShell from CSV file (Video tutorial)

Loop through PowerShell array using For Loop

Now, we will see how to loop through an array in PowerShell using for loop.

For ($i=0; $i -le 5; $i++) {
    "Number is: "+$i
    }

The above PowerShell array will print the numbers starting from 0 to 5.

In the case of a for loop, you will set up the value of a variable and then there will be a condition on which the loop will be terminated.

Below is the another example of a string array, below is how we can loop through a string array using for loop in PowerShell.

$employees = @("Bijay","Bhawana","Padmini","Lakshmi")
For ($i=0; $i -lt $employees.Length; $i++) {
    $employees[$i]
    }

The above array will print all the names from the array like below:

PowerShell array foreach loop

Now, we will see how to loop through an array using foreach loop in PowerShell.

Syntax:

ForEach (item In collection) {code block}

Here item represents the current item, collection is the item collection.

Example:

$numbers=1,2,3,4,5
foreach ($num in $numbers) {
  $num;
 }

You can see the output like below:

Now, we will see how to loop array of strings using PowerShell using foreach loop.

$employees = @("Bijay","Bhawana","Padmini","Lakshmi")
foreach ($emp in $employees) {
  $emp;
 }

You can see the output look like below:

PowerShell While Loop

Now, we will see how to use while loop in PowerShell arrary.

Syntax:

while (condition) {code block}

Example:

$i=1
While ($i -le 5)
    {
    $i
    $i++
    }

You can see the output like below:

PowerShell array do-while loop

Now, we will see how to use do-while loop to loop through a PowerShell array.

$i=1
Do {
    $i
    $i++
    }
While ($i -le 5)

You can see the output like below:

Loop through PowerShell array using Do-Until loop

Now, we will see how to loop through a PowerShell array using the do-until loop.

$i=1
Do {
    $i
    $i++
    }
Until ($i -gt 5)

You can see the output looks like below:

In this tutorial we learned how to loop through an array using for look, foreach loop, while loop, do while loop, do until loop in PowerShell.