PHP 命令行(CLI)脚本使用彩色着色类: PHP Class for Coloring PHP Command Line (CLI) Scripts Output

PHP 命令行(CLI)脚本使用彩色着色类 PHP Class for Coloring PHP Command Line (CLI) Scripts Output

• 原文链接

PHP 命令行界面 (CLI) 没有内置的脚本输出着色。 我们可以创建自己的类在 PHP CLI 输出上添加颜色。
此类仅适用于 Bash shell。 这个类很容易使用，只需创建类的新实例，调用 getColoredString 函数,
并使用字符串和前景色或背景色做参数。

• colors_class.php

<?php
class Colors
{
    private $foreground_colors = array();
    private $background_colors = array();

    public function __construct()
    {
        // Set up shell colors
        $this->foreground_colors['black'] = '0;30';
        $this->foreground_colors['dark_gray'] = '1;30';
        $this->foreground_colors['blue'] = '0;34';
        $this->foreground_colors['light_blue'] = '1;34';
        $this->foreground_colors['green'] = '0;32';
        $this->foreground_colors['light_green'] = '1;32';
        $this->foreground_colors['cyan'] = '0;36';
        $this->foreground_colors['light_cyan'] = '1;36';
        $this->foreground_colors['red'] = '0;31';
        $this->foreground_colors['light_red'] = '1;31';
        $this->foreground_colors['purple'] = '0;35';
        $this->foreground_colors['light_purple'] = '1;35';
        $this->foreground_colors['brown'] = '0;33';
        $this->foreground_colors['yellow'] = '1;33';
        $this->foreground_colors['light_gray'] = '0;37';
        $this->foreground_colors['white'] = '1;37';

        $this->background_colors['black'] = '40';
        $this->background_colors['red'] = '41';
        $this->background_colors['green'] = '42';
        $this->background_colors['yellow'] = '43';
        $this->background_colors['blue'] = '44';
        $this->background_colors['magenta'] = '45';
        $this->background_colors['cyan'] = '46';
        $this->background_colors['light_gray'] = '47';
    }

    // Returns colored string
    public function getColoredString($string, $foreground_color = null, $background_color = null)
    {
        $colored_string = "";

        // Check if given foreground color found
        if (isset($this->foreground_colors[$foreground_color])) {
            $colored_string .= "33[" . $this->foreground_colors[$foreground_color] . "m";
        }
        // Check if given background color found
        if (isset($this->background_colors[$background_color])) {
            $colored_string .= "33[" . $this->background_colors[$background_color] . "m";
        }

        // Add string and end coloring
        $colored_string .=  $string . "33[0m";

        return $colored_string;
    }

    // Returns all foreground color names
    public function getForegroundColors()
    {
        return array_keys($this->foreground_colors);
    }

    // Returns all background color names
    public function getBackgroundColors()
    {
        return array_keys($this->background_colors);
    }
}
?>

颜色类基本使用示例: Colors class basic usage examples

• colors.php

<?php
    include("colors_class.php");
    // Create new Colors class
    $colors = new Colors();

    // Test some basic printing with Colors class
    echo $colors->getColoredString("Testing Colors class, this is purple string on yellow background.", "purple", "yellow") . "n";
    echo $colors->getColoredString("Testing Colors class, this is blue string on light gray background.", "blue", "light_gray") . "n";
    echo $colors->getColoredString("Testing Colors class, this is red string on black background.", "red", "black") . "n";
    echo $colors->getColoredString("Testing Colors class, this is cyan string on green background.", "cyan", "green") . "n";
    echo $colors->getColoredString("Testing Colors class, this is cyan string on default background.", "cyan") . "n";
    echo $colors->getColoredString("Testing Colors class, this is default string on cyan background.", null, "cyan") . "n";
?>

打印所有前景色和背景色: All Foreground and background colors printed

• all_colors.php

<?php
    include("colors_class.php");
    // Create new Colors class
    $colors = new Colors();

    // Get Foreground Colors
    $fgs = $colors->getForegroundColors();
    // Get Background Colors
    $bgs = $colors->getBackgroundColors();

    // Loop through all foreground and background colors
    $count = count($fgs);
    for ($i = 0; $i < $count; $i++) {
        echo $colors->getColoredString("Test Foreground colors", $fgs[$i]) . "t";
        if (isset($bgs[$i])) {
            echo $colors->getColoredString("Test Background colors", null, $bgs[$i]);
        }
        echo "n";
    }
    echo "n";

    // Loop through all foreground and background colors
    foreach ($fgs as $fg) {
        foreach ($bgs as $bg) {
            echo $colors->getColoredString("Test Colors", $fg, $bg) . "t";
        }
        echo "n";
    }
?>

当然还有一个简单的方法，代码很小，四种颜色也够用了

• colorize.php

<?php
function colorize($text, $status) {  
 $out = "";  
 switch($status) {  
  case "SUCCESS":  
   $out = "[42m"; //Green background  
   break;  
  case "FAILURE":  
   $out = "[41m"; //Red background  
   break;  
  case "WARNING":  
   $out = "[43m"; //Yellow background  
   break;  
  case "NOTE":  
   $out = "[44m"; //Blue background  
   break;  
  default:  
   throw new Exception("Invalid status: " . $status);  
 }  
 return chr(27) . "$out" . "$text" . chr(27) . "[0m";  
}  

echo colorize("Your command was successfully executed...n", "SUCCESS");  
echo colorize("Your command was FAILURE executed...n", "FAILURE");  
echo colorize("Your command was WARNING executed...n", "WARNING");  
echo colorize("Your command was NOTE    info...n", "NOTE");  

?>

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