QS:Dropdown dates year min

Minimum date (date_min)

Description

This question attribute can be used to set the minimum value for the date calendar question. The date must be any English textual datetime , a date at Y-m-d PHP format or an expression return a Y-m-d PHP format. If expression have variable in the same page : this can break dropdow date.

Valid values

• 2015-01-01
• "now"
• "-10 years"
• date("Y-m-d", strtotime( AnotherDateQuestion ))