PHP格式化字符串以删除特殊字符颜色代码并添加适当的颜色

Question

Minecraft uses certain special characters to format strings with colors on their client, and I want to remove those color codes from the string but also format the string with the appropriate colors. An example of the color codes are: '§1' and '§6' You can see the full list here: http://www.minecraftwiki.net/wiki/Formatting_codes

Here is an example of my string raw from the client: "§8here is the §6message of the §8day" I need to remove the '§6' color code and surround the text with span tags with the appropriate color. Here is what I have so far, and I cannot figure this out.

I would want this result as a string:

<span style='color:#55555;'>here is the </span><span style='color:#FFAA00;'> message of the</span><span style='color:#55555;'> day</span>

My function:

function formatMOTD($motd) {
$result = array();
$previous;

$result = split("§1", $motd);
if (!empty($result)) {
    foreach ($result as $value) {
        $previous .= "<span style='color:#0000AA;'>" . substr($value, 1) . "</span>";
    }
}
$result = split("§8", $motd);
if (!empty($result)) {
    foreach ($result as $value) {
        $previous .= "<span style='color:#55555;'>" . substr($value, 1) . "</span>";
    }
}
$result = split("§6", $motd);
if (!empty($result)) {
    foreach ($result as $value) {
        $previous .= "<span style='color:#FFAA00;'>" . substr($value, 1) . "</span>";
    }
}

$motd = $previous;
return $motd;
}

thanks!

Answer 1

Another solution with regex:

$txt = "test §8here is the §6message of the §8day";
echo preg_replace_callback('/§(\d+)([^§]*)/s', 
    function($match)
    {
        $color = '';
        switch($match[1]) {
            case '1': 
                $color = '0000AA';
                break;
            case '6': 
                $color = 'FFAA00';
                break;
            case '8': 
                $color = '555555';
                break;
            default:
                break;
        }
        return "<span style='color:#" . $color .";'>" . $match[2] . "</span>";
    },
    $txt);

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UPD For PHP 5.3 and newer. If you have an older version you can use create_function() or user defined function instead of anonymous one inside the preg_replace_callback().