分享一个PHP 网站SEO及过滤类，方便使用
在给网站页面做ＳＥＯ的时候，长用到得一些函数。
比如：良好ＵＲＬ生成，用户名过滤，ｅｍａｉｌ检测，截取字符串，全角替换成半角，删除ｈｔｍｌ等
1. [PHP]代码
<?php class SEOTools{ public function friendlyURL($string, $replacement = '-') { $map = array( '/à|á|å|â|ä/' => 'a', '/è|é|ê|ẽ|ë/' => 'e', '/ì|í|î/' => 'i', '/ò|ó|ô|ø/' => 'o', '/ù|ú|ů|û/' => 'u', '/ç|č/' => 'c', '/ñ|ň/' => 'n', '/ľ/' => 'l', '/ý/' => 'y', '/ť/' => 't', '/ž/' => 'z', '/š/' => 's', '/æ/' => 'ae', '/ö/' => 'oe', '/ü/' => 'ue', '/Ä/' => 'Ae', '/Ü/' => 'Ue', '/Ö/' => 'Oe', '/ß/' => 'ss', '/ /'=>' ', '/ /'=>'', '/～|·|！|@|#|￥|%|…|&|×|（|）|-|\+|=|『|【|』|】|、|:|；|“|”|\'| 《|，|》|。|？|\/|—|_|：|√|＜|°|丶|＞|－|★|｜|│|‖|ˇ/'=>' ', '/[^\w\s\x80-\xff]/' => ' ', '/\\s+/' => $replacement ); $string = trim($string); $string = preg_replace(array_keys($map), array_values($map), $string); $string = preg_replace('/\\s+/',$replacement, strtolower($string)); $string = trim($string,$replacement); return $string; } //判断email public function iSEMail($mailAddr) { return strlen($mailAddr) > 6 && preg_match("/^[\w\-\.]+@[\w\-]+(\.\w+)+$/", $mailAddr); } //过滤用户 public function CheckUser($string,$replacement = '_') { $map = array( '/à|á|å|â|ä/' => 'a', '/è|é|ê|ẽ|ë/' => 'e', '/ì|í|î/' => 'i', '/ò|ó|ô|ø/' => 'o', '/ù|ú|ů|û/' => 'u', '/ç|č/' => 'c', '/ñ|ň/' => 'n', '/ľ/' => 'l', '/ý/' => 'y', '/ť/' => 't', '/ž/' => 'z', '/š/' => 's', '/æ/' => 'ae', '/ö/' => 'oe', '/ü/' => 'ue', '/Ä/' => 'Ae', '/Ü/' => 'Ue', '/Ö/' => 'Oe', '/ß/' => 'ss', '/ /'=>' ', '/ /'=>'', '/～|·|！|@|#|￥|%|…|&|×|（|）|-|\+|=|『|【|』|】|、|:|；|“|”|\'|《|，|》|。 |？|\/|—|_|：|√|＜|°|丶|＞|－|★|｜|│|‖|ˇ/'=>' ', '/[^\w\s\x80-\xff]/' => ' ', '/\\s+/' => $replacement ); $string = trim($string); $string = preg_replace(array_keys($map), array_values($map), $string); $string = preg_replace('/\\s+/',$replacement, strtolower($string)); $string = trim($string,$replacement); return $string; } public function mktitle($string, $replacement = '_') { $map = array( '/à|á|å|â|ä/' => 'a', '/è|é|ê|ẽ|ë/' => 'e', '/ì|í|î/' => 'i', '/ò|ó|ô|ø/' => 'o', '/ù|ú|ů|û/' => 'u', '/ç|č/' => 'c', '/ñ|ň/' => 'n', '/ľ/' => 'l', '/ý/' => 'y', '/ť/' => 't', '/ž/' => 'z', '/š/' => 's', '/æ/' => 'ae', '/ö/' => 'oe', '/ü/' => 'ue', '/Ä/' => 'Ae', '/Ü/' => 'Ue', '/Ö/' => 'Oe', '/ß/' => 'ss', '/ /'=>' ', '/ /'=>'', '/～|·|！|@|#|￥|%|…|&|×|（|）|-|\+|=|『|【|』|】|、|:|；|“|”|\'|《|，|》|。 |？|\/|—|_|：|√|＜|°|丶|＞|－|★|｜|│|‖|ˇ/'=>' ', '/[^\w\s^.\x80-\xff]/' => ' ', '/\\s+/' => $replacement ); $string = trim($string); $string = preg_replace(array_keys($map), array_values($map), $string); $string = preg_replace('/\\s+/',$replacement, strtolower($string)); $string = trim($string,$replacement); return $string; } // 全角替换成半角 public function Qj2bj($string) { $qj2bj = array( '１' => '1', '２' => '2', '３' => '3', '４' => '4', '５' => '5', '６' => '6', '７' => '7', '８' => '8', '９' => '9', '０' => '0', 'ａ' => 'a', 'ｂ' => 'b', 'ｃ' => 'c', 'ｄ' => 'd', 'ｅ' => 'e', 'ｆ' => 'f', 'ｇ' => 'g', 'ｈ' => 'h', 'ｉ' => 'i', 'ｊ' => 'j', 'ｋ' => 'k', 'ｌ' => 'l', 'ｍ' => 'm', 'ｎ' => 'n', 'ｏ' => 'o', 'ｐ' => 'p', 'ｑ' => 'q', 'ｒ' => 'r', 'ｓ' => 's', 'ｔ' => 't', 'ｕ' => 'u', 'ｖ' => 'v', 'ｗ' => 'w', 'ｘ' => 'x', 'ｙ' => 'y', 'ｚ' => 'z', 'Ａ' => 'A', 'Ｂ' => 'B', 'Ｃ' => 'C', 'Ｄ' => 'D', 'Ｅ' => 'E', 'Ｆ' => 'F', 'Ｇ' => 'G', 'Ｈ' => 'H', 'Ｉ' => 'I', 'Ｊ' => 'J', 'Ｋ' => 'K', 'Ｌ' => 'L', 'Ｍ' => 'M', 'Ｎ' => 'N', 'Ｏ' => 'O', 'Ｐ' => 'P', 'Ｑ' => 'Q', 'Ｒ' => 'R', 'Ｓ' => 'S', 'Ｔ' => 'T', 'Ｕ' => 'U', 'Ｖ' => 'V', 'Ｗ' => 'W', 'Ｘ' => 'X', 'Ｙ' => 'Y', 'Ｚ' => 'Z', ' ' => ' ' ); return strtr($string, $qj2bj); } public function DelNbsp($string) { $map = array( '/ /'=>' ', '/\?/'=>' ', '/ /'=>'', ); $string = preg_replace(array_keys($map), array_values($map), $string); $string = preg_replace('/\\s+/','',$string); return $string; } public function getZipcode($str) { $pattern = "/[0-9]{1}(\d+){4,5}/"; preg_match_all($pattern,$str,$zipcodeArr); if(empty($zipcodeArr[0])) { return ''; } else { return $zipcodeArr[0][0]; } } public function checkZipcode($str) { $strwidth=strlen($str); $zipcode=$str; switch($strwidth) { case 4:$zipcode="00".$str;break; case 5:$zipcode="0".$str;break; case 6:$zipcode=$str;break; default:$zipcode="";break; } return $zipcode; } public function getEmail($str) { $pattern = "/\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/i"; preg_match_all($pattern,$str,$emailArr); if(empty($emailArr[0])) { return ''; } else { $email_str=implode(",", $emailArr[0]); return $email_str; } } public function getUrl($str) { $pattern = "/(http:\/\/|https:\/\/|ftp:\/\/)?([\w:\/\.\?=&-_]+)/is"; preg_match_all($pattern,$str,$urlArr); if(empty($urlArr[0])) { return ''; } else { $url_str=implode(",", $urlArr[0]); $url_str=preg_replace('/(http:\/\/|https:\/\/|ftp:\/\/)/','',$url_str); return $url_str; } } public function match_links($document) { $match=array(); preg_match_all("'<\s*a\s.*?href\s*=\s*([\"\'])?(?(1)(.*?)\\1|([^\s\>]+))[^>]*>?(.*?) </a>'isx",$document,$links); while(list($key,$val) = each($links[2])) { if(!empty($val)) $match['link'][] = $val; } while(list($key,$val) = each($links[3])) { if(!empty($val)) $match['link'][] = $val; } while(list($key,$val) = each($links[4])) { if(!empty($val)) $match['content'][] = $val; } while(list($key,$val) = each($links[0])) { if(!empty($val)) $match['all'][] = $val; } return $match; } public function DelNoStr($string) { $map = array( '/à|á|å|â|ä/' => 'a', '/è|é|ê|ẽ|ë/' => 'e', '/ì|í|î/' => 'i', '/ò|ó|ô|ø/' => 'o', '/ù|ú|ů|û/' => 'u', '/ç|č/' => 'c', '/ñ|ň/' => 'n', '/ľ/' => 'l', '/ý/' => 'y', '/ť/' => 't', '/ž/' => 'z', '/š/' => 's', '/æ/' => 'ae', '/ö/' => 'oe', '/ü/' => 'ue', '/Ä/' => 'Ae', '/Ü/' => 'Ue', '/Ö/' => 'Oe', '/ß/' => 'ss', '/ /'=>' ', '/ /'=>'', '/～|·|！|@|#|￥|%|…|&|×|（|）|-|\+|=|『|【|』|】|、|:|；|“|”|’|《|，|》|。 |？|\/|—|_|‘|：|√|＜|°|丶|ˇ/'=>' ', '/[^\w\s\x80-\xff]/' => ' ', // '/\\s+/' => $replacement ); $string = trim($string); $string = preg_replace(array_keys($map), array_values($map), $string); $string = preg_replace('/\\s+/','',$string); $string = trim($string,''); return $string; } public function UrlToStr($string, $find = '/-/') { $string = preg_replace($find," ", strtolower($string)); $string = trim($string); return $string; } public function GetPyLetter($str) { return substr(pinyin($str, $ucfirst=true), 0,1); } public function GetPinYin($str) { return strtolower(pinyin($str, $ucfirst=true)); } public function DelCode($str) { $search = array("'<script[^>]*?>.*?</script>'si", // strip out javascript "'<[\/\!]*?[^<>]*?>'si", // strip out html tags "'([\r\n])[\s]+'", // strip out white space "'&(quot|#34|#034|#x22);'i", // replace html entities "'&(amp|#38|#038|#x26);'i", // added hexadecimal values "'&(lt|#60|#060|#x3c);'i", "'&(gt|#62|#062|#x3e);'i", "'&(nbsp|#160|#xa0);'i", "'&(iexcl|#161);'i", "'&(cent|#162);'i", "'&(pound|#163);'i", "'&(copy|#169);'i", "'&(reg|#174);'i", "'&(deg|#176);'i", "'&(#39|#039|#x27);'", "'&(euro|#8364);'i", // europe "'&a(uml|UML);'", // german "'&o(uml|UML);'", "'&u(uml|UML);'", "'&A(uml|UML);'", "'&O(uml|UML);'", "'&U(uml|UML);'", "'ß'i", ); $replace = array("", "", "\\1", "\"", "&", "<", ">", " ", chr(161), chr(162), chr(163), chr(169), chr(174), chr(176), chr(39), chr(128), "?", "?", "?", "?", "?", "?", "?", ); $str = preg_replace($search,$replace,$str); return trim($str); } public function CutStr($sourcestr,$cutlength) { $returnstr=''; $i=0; $n=0; $sourcestr=rtrim(SeoTools::DelCode($sourcestr)); $str_length=strlen($sourcestr);//字符串的字节数 while (($n<$cutlength) and ($i<=$str_length)) { $temp_str=substr($sourcestr,$i,1); $ascnum=Ord($temp_str);//得到字符串中第$i位字符的ascii码 if ($ascnum>=224) //如果ASCII位高与224， { $returnstr=$returnstr.substr($sourcestr,$i,3); //根据UTF-8编码规范，将3个连续的字符计为单个字符 $i=$i+3; //实际Byte计为3 $n++; //字串长度计1 } elseif ($ascnum>=192) //如果ASCII位高与192， { $returnstr=$returnstr.substr($sourcestr,$i,2); //根据UTF-8编码规范，将2个连续的字符计为单个字符 $i=$i+2; //实际Byte计为2 $n++; //字串长度计1 } elseif ($ascnum>=65 && $ascnum<=90) //如果是大写字母， { $returnstr=$returnstr.substr($sourcestr,$i,1); $i=$i+1; //实际的Byte数仍计1个 $n++; //但考虑整体美观，大写字母计成一个高位字符 } else //其他情况下，包括小写字母和半角标点符号， { $returnstr=$returnstr.substr($sourcestr,$i,1); $i=$i+1; //实际的Byte数计1个 $n=$n+0.5; //小写字母和半角标点等与半个高位字符宽... } } if ($str_length>$i){ $returnstr = $returnstr . ".";//超过长度时在尾处加上省略号 } return htmlspecialchars($returnstr); } public function CreateTagLink($tags_str) { $tags_array=explode(",",$tags_str); $link_tpl=""; foreach($tags_array as $v) { $tag=trim($v); $alias=SeoTools::friendlyURL($tag); // $link_tpl.='<a href="/s/'.urlencode($alias).'" title="'.$tag.'">'.$tag.'</a> '; $link_tpl.=$tag.' '; } return $link_tpl; } } /** * 中文转拼类 * * @author Lukin <my@lukin.cn> * @date 2011-01-25 10:44 */class PinYin { // 码表 private $fp = null; private $dat = 'pinyin.dat'; public function __construct(){ $this->dat = dirname(__FILE__).'/'.$this->dat; if (is_file($this->dat)) { $this->fp = fopen($this->dat, 'rb'); } } /** * 转拼音 * * @param string $str 汉字 * @param bool $ucfirst 首字母大写 * @param bool $polyphony 忽略多读音 * @return string */ public function encode($str, $ucfirst=true, $polyphony=true) { $ret = ''; $len = mb_strlen($str, 'UTF-8'); for ($i = 0; $i < $len; $i++) { $py = $this->pinyin(mb_substr($str, $i, 1, 'UTF-8')); if ($ucfirst && strpos($py,',') !== false) { $pys = explode(',', $py); $ret.= implode(',', array_map('ucfirst', ($polyphony ? array_slice($pys, 0, 1) : $pys))); } else { $ret.= $ucfirst ? ucfirst($py) : $py; } } return $ret; } /** * 汉字转十进制 * * @param string $word * @return number */ private function char2dec($word) { $bins = ''; $chars = str_split($word); foreach($chars as $char) $bins.= decbin(ord($char)); $bins = preg_replace('/^.{4}(.{4}).{2}(.{6}).{2}(.{6})$/', '$1$2$3', $bins); return bindec($bins); } /** * 单个字转拼音 * * @param string $char 汉字 * @return string */ public function pinyin($char){ if (strlen($char) == 3 && $this->fp) { $offset = $this->char2dec($char); // 判断 off 值 if ($offset >= 0) { fseek($this->fp, ($offset - 19968) << 4, SEEK_SET); return trim(fread($this->fp, 16)); } } return $char; } public function __destruct() { if ($this->fp) { fclose($this->fp); } }}/** * 取得实例 * * @return $pinyin */function &_pinyin_get_object() { static $pinyin; if ( is_null($pinyin) ) $pinyin = new PinYin(); return $pinyin;} if (!function_exists('pinyin')) :/** * 取得拼音 * * @param string $str * @param bool $ucfirst 首字母大写 * @return string */function pinyin($str, $ucfirst=true) { $py = _pinyin_get_object(); return $py->encode($str, $ucfirst);}endif;