<var id="xvh3p"><noframes id="xvh3p"><var id="xvh3p"></var><listing id="xvh3p"><strike id="xvh3p"><listing id="xvh3p"></listing></strike></listing>
<var id="xvh3p"><strike id="xvh3p"><var id="xvh3p"></var></strike></var><th id="xvh3p"><strike id="xvh3p"><th id="xvh3p"></th></strike></th>
<span id="xvh3p"><noframes id="xvh3p"><dl id="xvh3p"></dl>
<span id="xvh3p"><noframes id="xvh3p">
<dl id="xvh3p"><noframes id="xvh3p">
<listing id="xvh3p"><noframes id="xvh3p"><listing id="xvh3p"><strike id="xvh3p"><listing id="xvh3p"></listing></strike></listing><th id="xvh3p"><strike id="xvh3p"><th id="xvh3p"></th></strike></th>
<th id="xvh3p"><strike id="xvh3p"></strike></th>
<dl id="xvh3p"><noframes id="xvh3p">
<th id="xvh3p"><noframes id="xvh3p">

观点

互联网+时代,说建站,谈运营与网络营销

PHP 常用函数大全

时间:2021-05-29

1、判断手机端

function isMobile() { 
  // 如果有HTTP_X_WAP_PROFILE则一定是移动设备
  if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) {
    return true;
  } 
  // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
  if (isset($_SERVER['HTTP_VIA'])) { 
    // 找不到为flase,否则为true
    return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;
  } 
  // 脑残法,判断手机发送的客户端标志,兼容性有待提高。其中'MicroMessenger'是电脑微信
  if (isset($_SERVER['HTTP_USER_AGENT'])) {
    $clientkeywords = array('nokia','sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod','blackberry','meizu','android','netfront','symbian','ucweb','windowsce','palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile','MicroMessenger'); 
    // 从HTTP_USER_AGENT中查找手机浏览器的关键字
    if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))) {
      return true;
    } 
  } 
  // 协议法,因为有可能不准确,放到最后判断
  if (isset ($_SERVER['HTTP_ACCEPT'])) { 
    // 如果只支持wml并且不支持html那一定是移动设备
    // 如果支持wml和html但是wml在html之前则是移动设备
    if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))) {
      return true;
    } 
  } 
  
  return false;
}
0
首页
案例
关于
联系