i use a form with different input-fields like <form method="" action=""> first place for field_1<br> <input type="text" name="field_1"><br> <input type="text" name="field_2"><br> <input type="text" name="field_3"><br> <input type="text" name="field_4"><br> <br> images/tables second place for field_1<br> <input type="text" name="field_1"><br> </form> at two different places on my site i offer the input into formfield field_1 the point is that i do not know the names of that fields i will hafe 2 or 3 times on my site when i submit this form and look for all this fields like <dtml-in "REQUEST.form.keys()"> <dtml-var sequence-item> - ><dtml-var "REQUEST.get(_['sequence-item'])"> </dtml-in> i get for example the value for field_2 field_2 -> value but field_1 is looking like field_1 -> ['14','12'] in my opinion field_1 is an array now how do i check out if any of my fields are arrays or strings is there a function like php: is_array() if someone could help me would be great I'm not a native english speaker sorry ;-) thanx a lot