[Assertion]
; ?????
;assert.active = On ; ?assert(expr); active by default
;assert.warning = On ; issue a PHP warning for each failed assertion.
;assert.bail = Off ; don't bail out by default.
;assert.callback = 0 ; user-function to be called if an assertion fails.
;assert.quiet_eval = 0 ; eval the expression with current error_reporting(). set to true if you want error_reporting(0) around the eval().