有很多关键字保存在1.txt，部分如下：
6 week weight loss
6 week weight loss plan
a new me weight loss
a new me weight loss program
acai and weight loss
acai berries weight loss
acai berry and weight loss
acai berry colon cleanse weight loss
acai berry diet
acai berry for weight loss
acai berry juice weight loss
acai berry weight loss
需要转化成这种格式
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=3&art=6-week-weight-loss\">6 week weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=4&art6-week-weight-loss-plan\">6 week weight loss plan</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=5&arta-new-me-weight-loss\">a new me weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=6&arta-new-me-weight-loss-program\">a new me weight loss program</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=7&artacai-and-weight-loss\">acai and weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=8&artacai-berries-weight-loss\">acai berries weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=9&artacai-berry-and-weight-loss\">acai berry and weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=10&artacai-berry-colon-cleanse-weight-loss\">acai berry colon cleanse weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=11&artacai-berry-diet\">acai berry diet</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=12&artacai-berry-for-weight-loss\">acai berry for weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=13&artacai-berry-juice-weight-loss\">acai berry juice weight loss</a>
<a href=\"http://www.ciudadanodelsur.org/mds/?ewl=14&artacai-berry-weight-loss\">acai berry weight loss</a>
请帮忙写一个小脚本
将1.txt文件内的所有关键字转化为上面的形式，另存为D.txt
多谢
//php 版本5.0以上
$file="file.txt";//文件路径
$arr=file($file);//将文件内容读取到数组
//在数组中将文件内容格式化
foreach ($arr as $k=>$txt)
{
$arr[$k]='<a href="http://www.ciudadanodelsur.org/mds/?ewl='.$k.'&art='.str_replace(" ","-",$txt).'">'.$txt.'</a>';
}
//将格式化后的内容写入文件
if(file_put_contents("D.txt",$arr)){echo "OK";}
?>
