PHP commonly used small program code snippets, PHP commonly used program code snippets_PHP tutorial

Commonly used small program code snippets in PHP, commonly used PHP program code snippets

This article describes the commonly used small program code snippets in PHP. Share it with everyone for your reference, the details are as follows:

1. Calculate the difference in days between two times

$startdate=strtotime("2009-12-09");
$enddate=strtotime("2009-12-05");

The above PHP time and date function strtotime has turned the string date into a timestamp. In this way, you only need to subtract the two values ​​​​and then turn the seconds into days. The comparison is simple, as follows:

$days=round(($enddate-$startdate)/3600/24) ;
echo $days; //days为得到的天数;

2. Pagination

/**
* author jackluo
* $url 地址，$count 总数，$page 当前面,$Pagesize 分页大小
*/ 
function page_paper($url,$count,$page,$pagesize){
  $allpage = ceil($count/$pagesize);
  if($allpage<=3){
   for($i=1;$i<=$allpage;$i++){
    if($i==$page){
     echo '<a href="'.$url.'&page='.$page.'" class="page_ovr">'.$i.'</a>';
    }else{
     echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
    }
   }
  }else{
   $currentpage =  $allpage-$page;
   if($page<=3){
    for($i=1;$i<=$page;$i++){
     if($i == $page){
      echo '<a href="'.$url.'&page='.$i.'" class="page_ovr">'.$i.'</a>';
     }else{
      echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
     }
    }
    //后三条
    if($currentpage<=3){
     for($i=($page+1);$i<=$allpage;$i++){
      echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
     }
    }else{
     for($i=($page+1);$i<=($page+3);$i++){
      echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
     }
    }
   }else{
    //前三条
    for($i=($page-3);$i<=$page;$i++){
     if($i == $page){
      echo '<a href="'.$url.'&page='.$i.'" class="page_ovr">'.$i.'</a>';
     }else{
      echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
     }
    }
    if($currentpage<=3){
     for($i=($page+1);$i<=$allpage;$i++){
      echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
     }
    }else{
     //后三条
     for($i=($page+1);$i<=($page+3);$i++){
       echo '<a href="'.$url.'&page='.$i.'" >'.$i.'</a>';
     }
    }
   }
  }
}

3. Get the location of the mobile phone (if you have time, you can write a mobile platform)

//获得手机归属地
function phonenumberinfo($phone){
  $list = array();
  $soap =  new SoapClient('http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx?wsdl');
  $result =(array) $soap->getMobileCodeInfo(array(
    'mobileCode'=>$phone
  ));
  list($moblie,$location,$lbs) = explode(' ', $result['getMobileCodeInfoResult']);
  if($lbs){
   $type =  array('移动','电信','联通');
   foreach($type as $key=>$value){
    $ps = strpos($lbs, $value);
    if($ps){
     $procver = substr($lbs, 0,$ps);
     $list['province'] = $procver;
     $list['operator'] = $value;
     $list['city'] = $location;
     $list['type'] = $key;
     break;
    }
   }
   return $list;
  }
}

I hope this article will be helpful to everyone in PHP programming.

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