php中采集抓取页面函数详解

<?php
$url='http://www.111cn.net';
$lines_array=file($url);
$lines_string=implode('',$lines_array);
echo htmlspecialchars($lines_string);

?>

<?php
$url='http://www.111cn.net';
$lines_string=file_get_contents($url);
echo htmlspecialchars($lines_string);

?>

<?php
$url='http://www.111cn.net';
$handle=fopen($url,"rb");
$lines_string="";
do{
    $data=fread($handle,1024);
     if(strlen($data)==0) {
        break;
    }
    $lines_string.=$data;
}while(true);
fclose($handle);
echo htmlspecialchars($lines_string);

<?php
$url='http://www.111cn.net';
$ch=curl_init();
$timeout=5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$lines_string=curl_exec($ch);
curl_close($ch);
echo htmlspecialchars($lines_string);

<?php
set_time_limit(0);
$fp = fsockopen("www.111cn.net", 80, $errno, $errstr, 30);
if (!$fp) {
   echo "$errstr ($errno)<br />n";
} else {
   $out = "POST / HTTP/1.1rn";
   $out .= "Host: www.111cn.netrn";
   $out .= "Connection: Closernrn";
   fwrite($fp, $out);
   while (!feof($fp)) {
       echo fgets($fp, 128);
   }
   fclose($fp);
}

<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
 {
 die('Could not connect: ' . mysql_error());
 }
// some code
?>

<?php
    $conn = mysql_pconnect("localhost","root","123456") or die("Can not connect to MySQL");
    echo "MySQL线程号:". MySQL_thread_id($conn). "<br />";
    echo "Apache进程号". getmypid();
?>

<script src="/js/v2/jquery.input_complete.js" type="text/javascript" ></script>
<link rel="stylesheet" href="/css/v2/jquery.input_complete.css" type="text/css" />

<script type="text/javascript">
  $(function(){
   $("#abcc").bigAutocomplete({width:176,data:[{title:"九龙仓世纪华府",result:"5976898"},{title:"九龙仓君玺",result:"5976896"},{title:"舟山朱家尖东沙度假村",result:"5976895"},{title:"广厦天都城爵士花园",result:"5976893"},{title:"绿城玉园",result:"5976892"},{title:"江南铭楼",result:"5976890"}，{title:"世茂江滨花园",result:"14869"}],callback:function(data){
    $("#s_loupan").val(data.result);
    
   }});   
  
  })
</script>

<input type="text" id="abcc" class="sel_quy" autocomplete="off" />

public function gwquery(){
    if($_POST){
    $zm = $_POST['data'];
    $wzm = $zm."%";
    $b = M('Wpindexgw');
    if($zm!="t"){//获取的首字母不是t的时候
    $list1 = $b->where("gwstatus=1 and gwname like '%$zm%'")->order("time desc")->select();//查询
    $narr =array();
    foreach( $list1 as $key => $val){        
        $ct2 = explode(" ",$val['gwname']);//获取标题拆分成数组。
         $szm=strtolower(substr($ct2[1],0,1));  //获取首字母 并且小写
        if($ct2[0]=="The" && $szm==$zm){//如果第一个字符是The 并且第二个字母首字母和提交的相同，这里The 区分大小写。
        $narr[] = $val; //写入数组
        }   
    }
    }else{      //处理首字母是T的时候    ，不希望第一个字数The 的显示在列表里。
        $list1 = $b->where("gwstatus=1 and gwname like '$wzm'")->order("time desc")->select();
    foreach( $list1 as $key => $val){        
        $ct2 = explode(" ",$val['gwname']);
        if($ct2[0]=="The"){
        $unnarr[] = $key;//获取符合条件的，要去掉的内容的数组标号。     
        }
         
    }   
             
}
    $list = $b->where("gwstatus=1 and gwname like '$wzm'")->order("time desc")->select();//正常的查询。
    if($zm=="t"){//处理当首字母是t的时候 ,去掉上面查询得到的内容，也就是如果是The的时候 按T 不显示。
    foreach($unnarr as $uval){
        unset($list[$uval]);
    }           
    }else{//按下的不是t的时候，要把第二个首字母符合的内容添加到正常查询的数组中。
    if(!empty($narr) && !empty($list)){//带The 的符合条件正常 本身也不空的时候。
    $list = array_merge($narr,$list);//合并数组。
    }else if(empty($list)){//正常查询为空。则看是否有带The开头的，有则合并
    $list=array();
    $list = array_merge($narr,$list);   
    }
    }
    if($list){
    $this->ajaxReturn($list,'success',1);
    }else{
        $this->error("Bestiary not found.");
        }
    }
     
}

public function gwquery1(){//之前备份。。
    if($_POST){
    $zm = $_POST['data'];
    $wzm = $zm."%";
    $b = M('Wpindexgw');
    $list = $b->where("gwstatus=1 and gwname like '$wzm'")->order("time desc")->select();
    //dump($list);
    if($list){
    $this->ajaxReturn($list,'success',1);
    }else{
        $this->error("Bestiary not found.");
        }
    }
     
}

<?php
//连接
$mem = new Memcache;
$mem->connect("127.0.0.1", 11211) or die ("Could not connect");

//显示版本
$version = $mem->getVersion();
echo "Memcached Server version:  ".$version."<br>";

//保存数据
$mem->set('key1', 'This is first value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val ."<br>";

//替换数据
$mem->replace('key1', 'This is replace value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "<br>";

//保存数组
$arr = array('aaa', 'bbb', 'ccc', 'ddd');
$mem->set('key2', $arr, 0, 60);
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "<br>";

//删除数据
$mem->delete('key1');
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "<br>";

//清除所有数据
$mem->flush();
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "<br>";

//关闭连接
$mem->close();
?>

<?php
//使用memcache缓存
$mc = memcache_connect('localhost', 11211);
$pn = $mc->get('pid');
echo $pn;

if($pn<1) $pn = 1;
else $pn++;

$mc->set('pid',$pn,0,0); //设置永不过期
memcache_close($mc);
?>

<?php
/*****************************************
**********作者：冲星/arcow****************
**********njj@nuc.edu.cn*******************
**********php导入csv文件到数据库**********
**********同时计算程序执行时间***********
**********www.111cn.net***********
****************************************/
//定义获取时间函数
function getmicrotime(){
    list($usec, $sec) = explode(" ",microtime());
    return ((float)$usec + (float)$sec);
}
?>

<?php
$time_start = getmicrotime();
include("db.inc.php");//连接数据库
$db=new testcsv;
?>

<?php
$handle = fopen ("test.csv","r");
$sql="insert into scores(idcard,names,num,sex,nation,score) values('";
while ($data = fgetcsv ($handle, 1000, ",")) {
   $num = count ($data);
   for ($c=0; $c < $num; $c++) {
       if($c==$num-1){$sql=$sql.$data[$c]."')";break;}
       $sql=$sql.$data[$c]."','";
   }
print "<br>";
echo $sql."<br>";
$db->query($sql);
echo "SQL语句执行成功！<br>";
$sql="insert into scores(idcard,names,num,sex,nation,score) values('";
}
fclose ($handle);
$time_end = getmicrotime();
$time = $time_end - $time_start;
echo "程序执行时间：".$time."秒";
?>