PHP 获取短网址跳转后的真实地址的实例

$url = 'http://t.cn/h5mwx';
$headers = get_headers($url, TRUE);

print_r($headers);

//输出跳转到的网址
echo $headers['Location'];

附：

Array
(
    [0] => HTTP/1.1 302 Moved Temporarily
    [Location] => http://www.111Cn.net
    [Content-Type] => Array
        (
            [0] => text/html;charset=UTF-8
            [1] => text/html;charset=utf-8
        )

    [Server] => Array
        (
            [0] => weibo
            [1] => BWS/1.0
        )

    [Content-Length] => Array
        (
            [0] => 203
            [1] => 16424
        )

    [Date] => Array
        (
            [0] => Thu, 12 Dec 2013 10:42:25 GMT
            [1] => Thu, 12 Dec 2013 10:42:25 GMT
        )

    [X-Varnish] => 2893360335
    [Age] => 0
    [Via] => 1.1 varnish
    [Connection] => Array
        (
            [0] => close
            [1] => Close
        )
)

$header = get_headers($url, 1);
if (strpos($header[0], '301') || strpos($header[0], '302')) {
if (is_array($header['Location'])) {
return $header['Location'][count($header['Location'])-1];
} else {
return $header['Location'];
}
} else {
return $url;
}

echo $str = 'PHP点点通';
 
echo strlen($str); //3*1+3*3=12
echo mb_strlen($str, 'gb2312'); //3*1+3*2=9
echo mb_strlen($str, 'utf-8'); //6

<?php
function _strlen($str)
{
        preg_match_all("/./us", $str, $matches);
        return count(current($matches));
}
 
echo _strlen("PHP点点通");  //6

if(is_array($items) && !empty($items))｛

foreach( )

｝

foreach((array)$v as $k1 => $v1) {
     $edu[$k1][$k] = my_h($v1);// v1是最终要入库的数据,进行转义处理
}

<?php 

   //使用strlen方式 

   $arr = '123456'; 

   $sTime = microtime(1); 

   if(strlen($arr) > 6){ 

    // echo 1; 

  }     

   echo microtime(1) - $sTime; 

  // 输出：0.00035595893859863 

 /*-------------------------------------*/

   //使用isset($arr{})方式 

   $arr = '123456'; 

   $sTime = microtime(1); 

   if(!isset($arr{6})){ 

    // echo "1rn"; 

   } 

   echo microtime(1) - $sTime; 

// 输出：0.00019097328186035

function message($id){   
  $query = $this->db->query("SELECT * FROM message WHERE news_id = '$id'");//或者文章id后查询里面所有评论  
  return $query->result();   
 }

<?php foreach($query as $sel){?>
<p>留言用户:<?php echo $sel->receiver_author;?> 留言内容:<?php echo $sel->content?></p>
<?php }?>

<form id="form1" name="form1" method="post" action="<?php echo site_url()."/publish/user_message"?>">
<textarea rows="5" cols="50" name="huifu" <?php if($uere_name == "0"){echo "disabled";}?> >
<?php
 if($uere_name == "0")
{echo "抱歉你还没登录不能进行留言";}
?>www.111cN.net
</textarea>
<input class="wole" name="author" value="<?php echo $author;?>" /><!--接受方帖子作者-->
<input class="wole" name="news_id" value="<?php echo $news_idx;?>" /><!--文章id-->
<input type="submit" name="Submit"/>
</form>
<script language="javascript">
function updateinfo(){
  if(<?php echo $uere_name;?> == 1){
    document.form1.Submit.value = "留言";
    document.form1.Submit.disabled = false;
  }
  else{
    document.form1.Submit.value = "还未登录";
 document.form1.Submit.disabled = "disabled";
  }
}
updateinfo();
</script>

<p>这里是<?php echo $is;?>楼 用户:<?php echo $sel->receiver_author;?> <br />留言内容:<?php echo $sel->content?>&nbsp;&nbsp;&nbsp;

<a onClick="showdiv('contentid<?php echo $is;?>','showtext<?php echo $is;?>')" href="javascript:void(0)">回复</a>
<div id="contentid<?php echo $is;?>" class="none">
<?php 
 $query = $this->db->query("select * from message where son_id ='$sel->id' order by id");//获取指定父id的子回复
 $revis = $query->result();
    foreach($revis as $row){?>
 <p><?php if($row->sender_author == $row->receiver_author){echo $row->sender_author;}
 else{ echo $row->sender_author."回复了:".$row->receiver_author;}?>
  内容是:<?php echo $row->content?></p>
<?php }?>
<form action="<?php echo site_url()."/publish/son_message"?>" method="post">
<input name="son_idx" class="wole" value="<?php echo $sel->id?>" />
<input name="receiver_author" class="wole" value="<?php echo $sel->receiver_author;?>" />
<input class="wole" name="news_id" value="<?php echo $news_idx;?>" /><!--文章id-->
<textarea rows="5" cols="50" name="huifux"></textarea>
<br><input type="submit" name="sub" value="回复"></form></div></p>
<script language="JavaScript" type="text/JavaScript">
<!--www.111cn.net
function showdiv(targetid,objN){
  
      var target=document.getElementById(targetid);
      var clicktext=document.getElementById(objN)
     
            if (target.style.display=="block"){
                target.style.display="none";
                clicktext.innerText="回复";
 

            } else {
                target.style.display="block";
                clicktext.innerText='收起';
            }
  
}
-->
</script>