Function to trigger the start of a function inside an Azure Function App

Start-FunctionAppFunction.ps1

# This function triggers the start of a function inside an Azure Function App

function Start-FunctionAppFunction {
    [CmdletBinding()]
    param (
        # Enter the base url for the function app. Example: https://myappname.azurewebsites.net
        [Parameter(Mandatory)]
        [Uri]$FunctionAppBaseUrl,

        # Enter the app key called _master
        [Parameter(Mandatory)]
        [string]$FunctionAppMasterKey,

        # Enter the name of the function you want to start
        [Parameter(Mandatory)]
        [string]$FunctionName
    )

    Process {
        $Url = "$FunctionAppBaseUrl/admin/functions/$FunctionName"
        $Headers = @{ 
            'x-functions-key' = $FunctionAppMasterKey
        }

        Invoke-RestMethod -Uri $Url -Method Post -ContentType 'application/json' -Headers $Headers -Body '{"input":""}'
    }
}