php 字符截取与图片过滤函数

php 字符截取与图片过滤函数

本文章免费为各位朋友提供一款哦，如果你喜欢的话不防进来看看这款图片过滤正则表达试

function msubstr($str, $start, $len) {
 $tmpstr = "";
 $strlen = $start + $len;
 for($i = 0; $i < $strlen; $i++) {
       if(ord(substr($str, $i, 1)) > 0xa0) {
         $tmpstr .= substr($str, $i, 2);
         $i++;
       } else
         $tmpstr .= substr($str, $i, 1);
  }
 return $tmpstr;
 }
 
 //过滤图片
 function img_empty($content){
  $content=eregi_replace("<IMG ([a-zA-Z0-9~!& ?:"/._#=~&%]+)>","",$content);
  return $content;
 }

php html转换成text文本函数

文章为各位提供一个哦，如果喜欢就行了。

<?php
if(!defined('DEDEINC'))
{
 exit("Request Error!");
}

function SpHtml2Text($str)
{
 $str = preg_replace("/<sty(.*)\/style>|<scr(.*)\/script>|<!--(.*)-->/isU","",$str);
 $alltext = "";
 $start = 1;
 for($i=0;$i<strlen($str);$i++)
 {
  if($start==0 && $str[$i]==">")
  {
   $start = 1;
  }
  else if($start==1)
  {
   if($str[$i]=="<")
   {
    $start = 0;
    $alltext .= " ";
   }
   else if(ord($str[$i])>31)
   {
    $alltext .= $str[$i];
   }
  }
 }
 $alltext = str_replace("　"," ",$alltext);
 $alltext = preg_replace("/&([^;&]*)(;|&)/","",$alltext);
 $alltext = preg_replace("/[ ]+/s"," ",$alltext);
 return $alltext;
}

?>

php 设置cookie高级用法

function getvis(&$pagesid,&$retime) {
  global $err,$conf,$HTTP_COOKIE_VARS,$_COOKIE;

  if(isset($_COOKIE['ant'])) $cot=$_COOKIE['ant'];
  elseif(isset($HTTP_COOKIE_VARS['ant'])) $cot=$HTTP_COOKIE_VARS['ant'];
  else $cot='';
  $cos=preg_split("/x/",$cot);
  $max=sizeof($cos);
  for($c=0;$c<$max;$c++) {
    if(strlen($cos[$c])==10) {
      $id=substr($cos[$c],0,2);
      eval("$id=0x$id;");
      $anct[$id]=$cos[$c];
    }
  }

  if(isset($_COOKIE['anm'])) $com=$_COOKIE['anm'];
  elseif(isset($HTTP_COOKIE_VARS['anm'])) $com=$HTTP_COOKIE_VARS['anm'];
  else $com='';
  $cos=preg_split("/x/",$com);
  $max=sizeof($cos);
  for($c=0;$c<$max;$c++) {
    if(strlen($cos[$c])==10) {
      $id=substr($cos[$c],0,2);
      eval("$id=0x$id;");
      $tim=substr($cos[$c],2,8);
      eval("$tim=0x$tim;");
      if($tim>=$conf->mtime) $ancm[$id]=$cos[$c];
    }
  }

  if(isset($_COOKIE['anw'])) $cow=$_COOKIE['anw'];
  elseif(isset($HTTP_COOKIE_VARS['anw'])) $cow=$HTTP_COOKIE_VARS['anw'];
  else $cow='';
  $cos=preg_split("/x/",$cow);
  $max=sizeof($cos);
  for($c=0;$c<$max;$c++) {
    if(strlen($cos[$c])==10) {
      $id=substr($cos[$c],0,2);
      eval("$id=0x$id;");
      $tim=substr($cos[$c],2,8);
      eval("$tim=0x$tim;");
      if($tim>=$conf->wtime) $ancw[$id]=$cos[$c];
    }
  }

  if(isset($_COOKIE['an1'])) $co1=$_COOKIE['an1'];
  elseif(isset($HTTP_COOKIE_VARS['an1'])) $co1=$HTTP_COOKIE_VARS['an1'];
  else $co1='';
  $cos=preg_split("/x/",$co1);
  $max=sizeof($cos);
  for($c=0;$c<$max;$c++) {
    if(strlen($cos[$c])==10) {
      $id=substr($cos[$c],0,2);
      eval("$id=0x$id;");
      $tim=substr($cos[$c],2,8);
      eval("$tim=0x$tim;");
      if($tim>=$conf->dtime) $anc1[$id]=$cos[$c];
    }
  }

  //current time in HEX
  if($conf->ctime>0x7FFFFFFF) {
    $t1=$conf->ctime/16;
    $t2=$conf->ctime&0xF;
    $ctimestr=sprintf("%07X%01X",$t1,$t2);
  }
  else {
    $ctimestr=sprintf("%08X",$conf->ctime);
  }

  reset($pagesid);
  while($e=each($pagesid)) {
    $k=$e[0];
    if(isset($anct[$k])) {
      $pagesid[$k].='|0';
      if(strlen($anct[$k])==10) {
        $tim=substr($anct[$k],2,8);
        eval("$tim=0x$tim;");
        $retime[$k]=$tim;
      }
    }
    else {
      $pagesid[$k].='|1';
      $anct[$k]=sprintf("%02X%s",$k,$ctimestr);
    }

    if(isset($ancm[$k])) $pagesid[$k].='|0';
    else {
      $pagesid[$k].='|1';
      $ancm[$k]=sprintf("%02X%s",$k,$ctimestr);
    }

    if(isset($ancw[$k])) $pagesid[$k].='|0';
    else {
      $pagesid[$k].='|1';
      $ancw[$k]=sprintf("%02X%s",$k,$ctimestr);
    }

    if(isset($anc1[$k])) $pagesid[$k].='|0';
    else {
      $pagesid[$k].='|1';
      $anc1[$k]=sprintf("%02X%s",$k,$ctimestr);
    }
  }

  $cot=join('x',$anct);
  $com=join('x',$ancm);
  $cow=join('x',$ancw);
  $co1=join('x',$anc1);

  //get path
  $path=$conf->url;
  $path=preg_replace("/^(http://)([^/]+)/i",'',$path);
  $path.='aa.php';
  //set cookie
  SetCookie('ant',$cot,time()+($conf->time1*3000),$path);
  SetCookie('anm',$com,time()+($conf->time1*31),$path);
  SetCookie('anw',$cow,time()+($conf->time1*7),$path);
  SetCookie('an1',$co1,time()+$conf->time1,$path);
}

php 域名处理函数

下面这款个一个是判断输入的域名是不是合法的，然后再把http,https,ftp进行处理，分析再发送

function _scan_url()
   {
       $req = $this->_url;
      
       $pos = strpos($req, '://');
       $this->_protocol = strtolower(substr($req, 0, $pos));
      
       $req = substr($req, $pos+3);
       $pos = strpos($req, '/');
       if($pos === false)
           $pos = strlen($req);
       $host = substr($req, 0, $pos);
      
       if(strpos($host, ':') !== false)
       {
           list($this->_host, $this->_port) = explode(':', $host);
       }
       else
       {
           $this->_host = $host;
           $this->_port = ($this->_protocol == 'https') ? 443 : 80;
       }
      
       $this->_uri = substr($req, $pos);
       if($this->_uri == '')
           $this->_uri = '/';
   }

function cleanDomain($q,$w=0){ //整理域名 $w=1过滤www.前缀 $w=0不过滤
 $q = htmlspecialchars(strtolower(trim($q)));
 if(substr($q,0,7) == "http://" || substr($q,0,8) == "https://" || substr($q,0,6) == "ftp://"){
  $q = str_replace("http:/","",$q);
  $q = str_replace("https:/","",$q);
  $q = str_replace("ftp:/","",$q);
 }
 if(substr($q,0,4) == "www." && $w==1) {
  $q = str_replace("www.","",$q);
 }
 $q = trim($q,"/");
 return $q;
}

php 读取远程网站内容[反盗连]

这是一款利用php fsockopen来读取远程服务器的内容哦，下面这段程序的做法就是可以反盗连呢，好了下面来看看吧。

 function DownloadToString()
   {
       $crlf = "rn";
       $response="";
       // generate request
       $req = 'GET ' . $this->_uri . ' HTTP/1.0' . $crlf
           .    'Host: ' . $this->_host . $crlf
           .    $crlf;
      
       // fetch
       $this->_fp = @fsockopen(($this->_protocol == 'https' ? 'ssl://' : '') . $this->_host, $this->_port);
       @fwrite($this->_fp, $req);
       while(is_resource($this->_fp) && $this->_fp && !feof($this->_fp))
           $response .= fread($this->_fp, 1024);
       @fclose($this->_fp);
      
       // split header and body
       $pos = strpos($response, $crlf . $crlf);
       if($pos === false)
           return($response);
       $header = substr($response, 0, $pos);
       $body = substr($response, $pos + 2 * strlen($crlf));
      
       // parse headers
       $headers = array();
       $lines = explode($crlf, $header);
       foreach($lines as $line)
           if(($pos = strpos($line, ':')) !== false)
               $headers[strtolower(trim(substr($line, 0, $pos)))] = trim(substr($line, $pos+1));
      
       // redirection?
       if(isset($headers['location']))
       {
           $http = new HTTPRequest($headers['location']);
           return($http->DownloadToString($http));
       }
       else
       {
           return($body);
       }
   }
}