isset « Data Type « PHP






  1. PHP
  2. Data Type
  3. isset
1.Checking PHP's global authentication variables
2.Checking Whether a Variable Is Set: isset( )
3.Using the isset() function to see whether an array element is defined for a given index.
4.bool isset ( mixed var [, mixed var [, ...]] ) returns true if its parameter has been set
5.Viewing the username cookie