Phpcms2008关联链接冲突问题的解决方法

< a href="www。yyy.com">做<a href="www。yyy.com">程序</a>是件很有意思的事</a>

function keylinks($txt,$replacenum = '')
{
$search = "/(alts*=s*|titles*=s*)["|'](.+?)["|']/ise";
$replace = "_base64_encode('1','2')";
$replace1 = "_base64_decode('1','2')";
$txt = preg_replace($search,$replace,$txt);
$linkdatas = cache_read('keylink.php','',1);
if($linkdatas)
{
$word = $replacement = array();
foreach($linkdatas as $v)
{
$word1[] = '/'.preg_quote($v[0],'/').'/';
$word2[] = $v[0];
$replacement[] = '<a class="keylink" href="'.$v[1].'" target="_blank">'.$v[0].'</a>';
}
if($replacenum != '')
{
$txt = preg_replace($word1,$replacement,$txt,$replacenum);
}
else
{
$txt = str_replace($word2,$txt);
}
}
$txts = array();
$txts = split('$v){
if($k!=0){
$txts[$k] = '$v){
if(stripos($v,'')){
$counta++;
}else{
if($counta != 1){
$txts[$k] = preg_replace('//',$txts[$k]);
$txts[$k] = preg_replace('/<(/)?a(s+.*?)?>/',$txts[$k],$counta-1,$count);
$counta = $counta-$count;
}
}
}
}
$t = '';
foreach($txts as $v){
$t .= $v;
}
$txt = $t;
$txt = preg_replace($search,$replace1,$txt);
return $txt;
}