首先让我们来看一个我朋友希望转换的纯文本文件的例子：
以下为引用的内容：
复制代码 代码如下:
Green for Mars!
John R. Doe
The idea of little green men from Mars, long a staple of science fiction, may soon turn out to be less fantasy and more fact.
Recent samples sent by the latest Mars exploration team indicate a high presence of chlorophyll in the atmosphere. Chlorophyll, you will recall, is what makes plants green. It's quite likely, therefore, that organisms on Mars will have, through continued exposure to the green stuff, developed a greenish tinge on their outer exoskeleton.
An interview with Dr. Rushel Bunter, the head of ASDA's Mars Colonization Project blah blah...
What does this mean for you? Well, it means blah blahblah...
Track follow-ups to this story online at http://www.mars-connect.dom/. To see pictures of the latest samples, log on to http://www.asdamcp.dom/galleries/220/
复制代码 代码如下:
// set source file name and path
$source = "toi200686.txt";
// read raw text as array
$raw = file($source) or die("Cannot read file");
// retrieve first and second lines (title and author)
$slug = array_shift($raw);
$byline = array_shift($raw);
// join remaining data into string
$data = join('', $raw);
// replace special characters with HTML entities
// replace line breaks with
$html = nl2br(htmlspecialchars($data));
// replace multiple spaces with single spaces
$html = preg_replace('/ss+/', ' ', $html);
// replace URLs with elements
$html = preg_replace('/s(w+://)(S+)/', ' ', $html);
// start building output page
// add page header
$output =<<< HEADER
