正则表达式从 [简码] 中提取变量 [英] Regex extract variables from [shortcode]

问题描述

将一些内容从 WordPress 迁移到 Drupal 后，我有一些短代码需要转换:

After migrating some content from WordPress to Drupal, I've got som shortcodes that I need to convert:

字符串内容:

无关的测试...[崇高视频类=崇高"海报="http://video.host.com/_previews/600x450/sbx-60025-00-da-ANA.png"src1="http://video.host.com/_video/H.264/LO/sbx-60025-00-da-ANA.m4v"src2="(hd)http:///video.host.com/_video/H.264/HI/sbx-60025-00-da-ANA.m4v"宽度="560" 高度="315"]..更多不相关的文字.

Irrelevant tekst... [sublimevideo class="sublime" poster="http://video.host.com/_previews/600x450/sbx-60025-00-da-ANA.png" src1="http://video.host.com/_video/H.264/LO/sbx-60025-00-da-ANA.m4v" src2="(hd)http://video.host.com/_video/H.264/HI/sbx-60025-00-da-ANA.m4v" width="560" height="315"] ..more irrelevant text.

我需要在短代码 [sublimevideo ...] 中找到所有变量并将其转换为数组:

I need to find all variables within the shortcode [sublimevideo ...] and turn it into an array:

Array (
    class => "sublime"
    poster => "http://video.host.com/_previews/600x450/sbx-60025-00-da-FMT.png"
    src1 => "http://video.host.com/_video/H.264/LO/sbx-60025-00-da-FMT.m4v"
    src2 => "(hd)http://video.host.com/_video/H.264/HI/sbx-60025-00-da-FMT.m4v"
    width => "560"
    height => "315"
)

并且最好处理短代码的多个实例.

And preferably handle multiple instances of the shortcode.

我想它可以用 preg_match_all() 来完成，但我没有运气.

I guess it can be done with preg_match_all() but I've had no luck.

推荐答案

这会给你你想要的.

$data = 'Irrelevant tekst... [sublimevideo class="sublime" poster="http://video.host.com/_previews/600x450/sbx-60025-00-da-ANA.png" src1="http://video.host.com/_video/H.264/LO/sbx-60025-00-da-ANA.m4v" src2="(hd)http://video.host.com/_video/H.264/HI/sbx-60025-00-da-ANA.m4v" width="560" height="315"] ..more irrelevant text.';

$dat = array();
preg_match("/[sublimevideo (.+?)]/", $data, $dat);

$dat = array_pop($dat);
$dat= explode(" ", $dat);
$params = array();
foreach ($dat as $d){
    list($opt, $val) = explode("=", $d);
    $params[$opt] = trim($val, '"');
}

print_r($params);

为了应对处理短代码的下一个挑战，您可以使用 preg_replace_callback 将短标签数据替换为其结果标记.

In anticipation of the next challenge you will face with processing short codes you can use preg_replace_callback to replace the short tag data with it's resultant markup.

$data = 'Irrelevant tekst... [sublimevideo class="sublime" poster="http://video.host.com/_previews/600x450/sbx-60025-00-da-ANA.png" src1="http://video.host.com/_video/H.264/LO/sbx-60025-00-da-ANA.m4v" src2="(hd)http://video.host.com/_video/H.264/HI/sbx-60025-00-da-ANA.m4v" width="560" height="315"] ..more irrelevant text.';

function processShortCode($matches){
    // parse out the arguments
    $dat= explode(" ", $matches[2]);
    $params = array();
    foreach ($dat as $d){
        list($opt, $val) = explode("=", $d);
        $params[$opt] = trim($val, '"');
    }
    switch($matches[1]){
        case "sublimevideo":
            // here is where you would want to return the resultant markup from the shorttag call.
             return print_r($params, true);        
    }

}
$data = preg_replace_callback("/[(w+) (.+?)]/", "processShortCode", $data);
echo $data;

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