#Based on a PowerShell.com PowerTip
#http://powershell.com/cs/blogs/tips/archive/2014/10/07/getting-a-variable-inventory.aspx
#Add to script inside ISE
#Kaplan changed function name, as Get-Variable already in use,
#Gave unique name to function variables to exclude, added other system variables,
#Added example to show current values with enumeration

Function Get-ScriptVariables
{
  $GetVar_Token= $null
  $GetVar_Errors = $null
  
  $GetVar_AST = [System.Management.Automation.Language.Parser]::ParseInput($psise.CurrentFile.Editor.Text, [ref] $GetVar_Token, [ref] $GetVar_Errors)
  
  # not complete, add variables you want to exclude from the list:
  $GetVar_SysVars = "_,null,psitem,psise,true,false,args,host".Split(",")
  
  $null = $GetVar_AST.FindAll({ $args[0] -is [System.Management.Automation.Language.CommandAst] }, $true)
  $GetVar_Token|
    Where-Object { $_.Kind -eq 'Variable'} |
    Select-Object -ExpandProperty Name |
    Where-Object { $GetVar_SysVars -notcontains $_ } |
    Where-Object { $_ -notlike "GetVar_*"}
    Sort-Object -Unique 
} 

#example variables
$a=3
$b="jack"
#end

Get-ScriptVariables| ForEach-Object {Get-Variable $_} |ft -AutoSize