php 匹配url 正则表达式代码
php教程 匹配url 正则表达式代码
//这是个获取文章内容中所有链接的php正则表达式
$str ="";
$reg = "<a[sS]*?(href)s*=s*(?(?=["'])((["'])(?<href>[^"']*)2)|(?<src>[^s>]+))[sS]*?>";
//下面这个实例是获取内容中域名正则表达式
function get_domain($url){
$pattern = "/[w-]+.(com|net|org|gov|cc|biz|info|cn)(.(cn|hk))*/";
preg_match($pattern, $url, $matches);
if(count($matches) > 0) {
return $matches[0];
}else{
$rs = parse_url($url);
$main_url = $rs["host"];
if(!strcmp(long2ip(sprintf("%u",ip2long($main_url))),$main_url)) {
return $main_url;
}else{
$arr = explode(".",$main_url);
$count=count($arr);
$endArr = array("com","net","org","3322");//com.cn net.cn 等情况
if (in_array($arr[$count-2],$endArr)){
$domain = $arr[$count-3].".".$arr[$count-2].".".$arr[$count-1];
}else{
$domain = $arr[$count-2].".".$arr[$count-1];
}
return $domain;
}
}
}
//实例
$str ="jfkdlajfdafdjak;www.zzzyk.com";
echo get_domain($str)
//得出值为zzzyk.com
补充:Php教程,Php常用代码