PHP Boolean false values

When the PHP boolean dummy value is converted to boolean, the following values are considered FALSE:

• Boolean value FALSE

• Integer value 0 (0)

• Floating point value: 0.0 (0)

• Null string

• String "0"

• Array that does not contain any elements

• Objects that do not include any member variables (applicable only to PHP 4.0)

• Special type NULL (including unassigned variables)

• SimpleXML object generated from null tag

All other values are considered to be TRUE (including any resources ).

Note: 'false' indicates the true value of the string because it contains a string of content!