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php中自动提取文章内容关键字seo优化网站的函数步骤

WBOY
WBOYOriginal
2016-06-13 10:47:321331browse

php中自动提取文章内容关键字seo优化网站的函数方法

利用discuz的基础条件实现文章内容自动提取关键字,进而优化网站内链的函数方法

方法一:此方法提取的关键字比较接近
function getkey($contents){  //	$rows = strip_tags($contents);	$arr = array(' ',' ',"\s", "\r\n", "\n", "\r", "\t", ">", "“", "”","<br />");	$qc_rows = str_replace($arr, '', $rows);	if(strlen($qc_rows)>2400){		$qc_rows = substr($qc_rows, '0', '2400');	}	$data = @implode('', file("http://keyword.discuz.com/related_kw.html?title=$qc_rows&ics=gbk&ocs=gbk"));	preg_match_all("/<kw>(.*)A\[(.*)\]\](.*)><\/kw>/",$data, $out, PREG_SET_ORDER);	$key="";	for($i=0;$i<5;$i++){		$key=$key.$out[$i][2];		if($out[$i][2])$key=$key.",";	}	return $key; }
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方法二:此方法提取的关键字相对上面差一点点
function getkey($contents){ 	$key = '';	$rows = strip_tags($contents); 	$arr = array(' ',' ',"\s", "\r\n", "\n", "\r", "\t", ">", "“", "”"); 	$qc_rows = str_replace($arr, '', $rows); 	if(strlen($qc_rows)>2400){ 		$qc_rows = substr($qc_rows, '0', '2400'); 	} 	$data = @implode('', file("http://keyword.discuz.com/related_kw.html?title=$contents&ics=gbk&ocs=gbk")); 	preg_match_all("/<kw>(.*)A\[(.*)\]\](.*)><\/kw>/",$data, $out, PREG_SET_ORDER); 	for($i=0;$i<5;$i++){ 		$key=$key.$out[$i][2]; 		if($out[$i][2])$key=$key.","; 	} 	return $key; }
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