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(PHP 5)

variant_add --  "Adds" two variant values together and returns the result

Description

mixed variant_add ( mixed left, mixed right )

Adds left to right using the following rules (taken from the MSDN library), which correspond to those of Visual Basic:

Table 1. Variant Addition Rules

If Then Both expressions are of the string type Concatenation One expression is a string type and the other a character Addition One expression is numeric and the other is a string Addition Both expressions are numeric Addition Either expression is NULL NULL is returned Both expressions are empty Integer subtype is returned

Related Function(s)

variant_sub()