# ncurses_has_colors

(PHP 4 >= 4.0.7, PHP 5 < 5.3.0, PECL ncurses >= 1.0.0)

ncurses_has_colors — Checks if terminal has color capabilities

### 说明

ncurses_has_colors ( void ) : bool

Checks whether the terminal has color capabilities. This function can be used to write terminal-independent programs. ncurses must be initialized using ncurses_init() before calling this function.

### 参数

此函数没有参数。

### 返回值

Return `TRUE` if the terminal has color capabilities, `FALSE` otherwise.

### 范例

Example #1 Writing a string with a specified color to the screen

    <?php
    ncurses_init();

    // If the terminal supports colors, initialize and set active color
    if (ncurses_has_colors()) {
        ncurses_start_color();
        ncurses_init_pair(1, NCURSES_COLOR_YELLOW, NCURSES_COLOR_BLUE);
        ncurses_color_set(1);
    }

    // Write a string at specified location
    ncurses_mvaddstr(10, 10, "Hello world! Yellow on blue text!");

    // Flush output to screen
    ncurses_refresh();

    ncurses_end();
    ?>

### 参见

- ncurses_can_change_color() - Checks if terminal color definitions can be changed
- ncurses_start_color() - Initializes color functionality