使用自定义标签解析文本字段并转换为 HTML

Question

我已经为此苦苦挣扎了好几个小时。 已尝试在线搜索解决方案，但我发现的一切都不是我想要的。迫切希望得到答案。

我有一个包含文本的长字符串（mySQL 文本字段）。 虚拟文本示例：

There are many possible ways to minimize chances of cancer.
One such which has been proven beneficial is the use of anti oxidants
and various supplements.
[ARTICLE]
[TITLE]Green tea shows strong anti oxidant effects[/TITLE]
[DATE]Article published on May 2005[/DATE]
[BY]Department of Oncology research, University Hospital Denmark[/BY]
[TEXT]We test 54 subjects and given several vitmins, 
other group received placebo. [[MARK]]We concluded that green 
tea is an effective anti oxidant[[/MARK]]. We found Vitamin C to be
less effective.[/TEXT]
[/ARTICLE]

We also tested other supplements and also found interesting properties.
[ARTICLE]
[TITLE]Carrots ineffective for testicular cancer[/TITLE]
[DATE]Article published on October 2012[/DATE]
[BY]Oncology Journal, issue: 54[/BY]
[TEXT]Many people carrots are effective for several types of cancer.
In the research we did [[MARK]]we found that Carrots did lower
the cancer markers in test subjects[[/MARK]]. We cannot recommend
it as anti cancer.[/TEXT]
[/ARTICLE]
We will publish more research later on."

我需要做的是解析该字符串并输出它。 请注意，字符串有两个部分（每个部分都以 [ARTICLE] 开头并以 [/ARTICLE] 结尾，并且每个部分都有内部自定义标签。 对于每个以 [ARTICLE] 开头并以 [/ARTICLE] 结尾的地方，我不会按原样输出，而是要调用我的自定义函数以不同的格式。

例如：

function format_text_with_articles (ArtTitle, ArtDate, ArtBy, ArtText){ // This is just a simple function I already have that gets // the params and formats a table with special formatting inside that makes // article extracts look nice. }

所以只需将所有文本输出到浏览器，删除标签 [ARTICLE] 和 [/ARTICLE] 之间的所有内容（当然包括标签本身）和这些部分我使用我的函数所做的特殊格式。

请注意，在我的自定义标签 TEXT 标签中，我有特殊的 MARK 示例：标签[TEXT] blah blah blah [[MARK]]这是强调文本[[/MARK]] [/TEXT]。为简单起见，因为 MARK 是唯一可以嵌套在 [TEXT] 内的标签，所以我将其设为 [[MARK]]（带双括号]

如何按原样输出所有文本字段，[ARTICLE] 标记之间的部分除外，并将它们视为发送到自定义函数的参数？

非常感谢您的帮助！

Answer 1

我认为你想做的事情是完全可能的。可能有几种方法可以给这只猫剥皮，但我会这样做。

<?php

$full_article = '[ARTICLE]
[TITLE]Green tea shows strong anti oxidant effects[/TITLE]
[DATE]Article published on May 2005[/DATE]
[BY]Department of Oncology research, University Hospital Denmark[/BY]
[TEXT]We test 54 subjects and given several vitmins, 
other group received placebo. [[MARK]]We concluded that green 
tea is an effective anti oxidant[[/MARK]]. We found Vitamin C to be
less effective.[/TEXT]
[/ARTICLE]

We also tested other supplements and also found interesting properties.
[ARTICLE]
[TITLE]Carrots ineffective for testicular cancer[/TITLE]
[DATE]Article published on October 2012[/DATE]
[BY]Oncology Journal, issue: 54[/BY]
[TEXT]Many people carrots are effective for several types of cancer.
In the research we did [[MARK]]we found that Carrots did lower
the cancer markers in test subjects[[/MARK]]. We cannot recommend
it as anti cancer.[/TEXT]
[/ARTICLE]';



// MATCH ALL OF THE ARTICLE TAGS IN YOUR TEXT AND STORE EACH ONE INTO $matches
preg_match_all('~\[ARTICLE\](.*?)\[/ARTICLE\]~ms', $full_article, $matches);



// LOOP THROUGH EACH OF THE MATCHES, DO SOME FORMATTING AND REPLACE THE EXISTING CONTENT
for ($i = 0; $i < count($matches[1]); $i++) {

    $article = $matches[1][$i]; // TEXT WE WILL OPERATE ON
    $existing_article = $matches[0][$i]; // TEXT WE WILL BE REPLACING

    // PULL OUT EACH OF THE FIELDS WE WANT TO PASS ALONG TO OUR FUNCTION
    preg_match('~\[TITLE\](.*?)\[/TITLE\]~ms', $article, $match_article_title);
    preg_match('~\[DATE\](.*?)\[/DATE\]~ms', $article, $match_article_date);
    preg_match('~\[BY\](.*?)\[/BY\]~ms', $article, $match_article_by);
    preg_match('~\[TEXT\](.*?)\[/TEXT\]~ms', $article, $match_article_text);

    $article_title = $match_article_title[1];
    $article_date = $match_article_date[1];
    $article_by = $match_article_by[1];
    $article_text = $match_article_text[1];



    // SEND THE VARIABLES TO A FUNCTION TO FORMAT THE TEXT
    // THIS IS WHAT WE WILL BE REPLACING THE EXISTING TEXT WITH
    $replacement_text = format_text_with_articles ($article_title, $article_date, $article_by, $article_text);



    // REPLACE THE EXISTING ARTICLE TEXT WITH OUR REPLACEMENT TEXT    
    $full_article = preg_replace('/'.preg_quote($existing_article, '/').'/', $replacement_text, $full_article);

}



// PRINT OUT THE FINISHED ARTICLE
print $full_article;



// THIS FUNCTION TAKES SOME PARAMS AND PRETTIES THEM UP FOR THE DANCE    
function format_text_with_articles ($article_title, $article_date, $article_by, $article_text) {



    // REPLACE THE 'MARK' BRACES WITH BOLD TAGS        
    $article_text = preg_replace('~\[\[MARK\]\](.*?)\[\[/MARK\]\]~ms', '<b>$1</b>', $article_text);



    // RETURN THE FORMATTED TEXT BACK TO THE CALLING 'FOR' LOOP
    return "<span style=\"font-family: VERDANA; font-size: 11px;\"><p style=\"font-weight: bold; margin-top: 20px; margin-bottom: 5px;\">".$article_title."</p><p style=\"color: blue; margin: 0px;\">".$article_date."</p><p style=\"color: orange; margin: 0px;\">By: ".$article_by."</p><p style=\"margin-top: 5px; margin-bottom: 20px;\">".$article_text."</p></SPAN>";



}