php给文章加关键字连接,文章内容自动加链接效果 怎样控制链接次数?该如何处理
php给文章加关键字连接,文章内容自动加链接效果 怎样控制链接次数?
我现在已经实现了php输出html的指定关键词链接到指定的URL,但是有一个问题是通篇所有的关键词都会链接,我想控制它链接的次数或者只让它链接文章中出现的第一个关键词,请问如何实现?已经实现的关键词自动链接代码如下:
function keylink($cont){
$keys = array(
array('关键词1','http://链接1')
);
foreach($keys as $nkeys){
$cont = preg_replace("/($nkeys[0])/iU","$nkeys[0]",$cont);
}
return $cont;
}
求php大大!!!
------解决方案--------------------
mixed preg_replace ( mixed $pattern , mixed $replacement , mixed $subject [, int $limit = -1 [, int &$count ]] )
第四个参数,limit限制为1.

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