Khem, khem <kaszle cudzysłowiami>
Zresztą o tym pisze na samym początku w php.ini
; The value can be a string, a number, a PHP constant (e.g. E_ALL or M_PI), one
; of the INI constants (On, Off, True, False, Yes, No and None) or an expression
; (e.g. E_ALL & ~E_NOTICE), a quoted string ("bar"), or a reference to a
; previously set variable or directive (e.g. ${foo})
; Expressions in the INI file are limited to bitwise operators and parentheses:
; | bitwise OR
; ^ bitwise XOR
; & bitwise AND
; ~ bitwise NOT
; ! boolean NOT
; Boolean flags can be turned on using the values 1, On, True or Yes.
; They can be turned off using the values 0, Off, False or No.
; An empty string can be denoted by simply not writing anything after the equal
; sign, or by using the None keyword:
; foo = ; sets foo to an empty string
; foo = None ; sets foo to an empty string
; foo = "None" ; sets foo to the string 'None'