(PHP 4 >= 4.3.0, PHP 5 < 5.3.0, PECL ncurses >= 1.0.0)
ncurses_color_content — Retrieves RGB components of a color
ncurses_color_content ( int $color , int &$r , int &$g , int &$b ) : int
Retrieves the red, green, and blue components for the given color definition. Terminal color capabilities must be initialized with ncurses_start_color() prior to calling this function.
color
The number of the color to retrieve information for. May be one of the pre-defined color constants.
r
A reference to which to return the red component of the color. The value returned to the reference will be between 0 and 1000.
g
A reference to which to return the green component of the color. The value returned to the reference will be between 0 and 1000.
b
A reference to which to return the blue component of the color. The value returned to the reference will be between 0 and 1000.
Returns -1 if the function was successful, and 0 if ncurses or terminal color capabilities have not been initialized.
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https://www.php.net/manual/en/function.ncurses-color-content.php