我发现移动检测非常简单，你可以使用isMobile()函数:)

没有可靠的方法。您也许可以查看user-agent字符串，但这可能会被欺骗或省略。或者，您也可以使用GeoIP服务来查找客户机的IP地址，但同样，这可以很容易地避免。

你也可以使用第三方api通过用户代理字符串进行设备检测。其中一个这样的服务是www.useragentinfo.co。只需注册并获得你的api令牌，以下是你如何通过PHP获得设备信息:

<?php
$useragent = $_SERVER['HTTP_USER_AGENT'];
// get api token at https://www.useragentinfo.co/
$token = "<api-token>";
$url = "https://www.useragentinfo.co/api/v1/device/";

$data = array('useragent' => $useragent);

$headers = array();
$headers[] = "Content-type: application/json";
$headers[] = "Authorization: Token " . $token;

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));

$json_response = curl_exec($curl);

$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);

if ($status != 200 ) {
    die("Error: call to URL $url failed with status $status, response $json_response, curl_error " . curl_error($curl) . ", curl_errno " . curl_errno($curl));
}

curl_close($curl);

echo $json_response;
?>

如果访问者使用的是iPhone，下面是示例回复:

{
  "device_type":"SmartPhone",
  "browser_version":"5.1",
  "os":"iOS",
  "os_version":"5.1",
  "device_brand":"Apple",
  "bot":false,
  "browser":"Mobile Safari",
  "device_model":"iPhone"
}

一个更简单的解决方案似乎在大多数情况下都有效:

function funcDeviceType() {

 // INFO ABOUT THE BROWSER/DEVICE USER IS VISITING ON
 $useragent = $_SERVER["HTTP_USER_AGENT"]; 

 if(stripos($useragent, "mobile")!== false){
      return "mobile device";
  }else{
      return "desktop or laptop computer";
  }
}

这是一个来源:

检测手机浏览器 下载PHP脚本

代码:

<?php

$useragent=$_SERVER['HTTP_USER_AGENT'];

if(preg_match('/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i',$useragent)||preg_match('/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i',substr($useragent,0,4)))

header('Location: http://detectmobilebrowser.com/mobile');

?>

到目前为止，我一直在想，为什么没有人对使用implode()的公认答案稍加修改，以提高代码的可读性。所以是这样的:

<?php
$uaFull = strtolower($_SERVER['HTTP_USER_AGENT']);
$uaStart = substr($uaFull, 0, 4);

$uaPhone = [
    '(android|bb\d+|meego).+mobile',
    'avantgo',
    'bada\/',
    'blackberry',
    'blazer',
    'compal',
    'elaine',
    'fennec',
    'hiptop',
    'iemobile',
    'ip(hone|od)',
    'iris',
    'kindle',
    'lge ',
    'maemo',
    'midp',
    'mmp',
    'mobile.+firefox',
    'netfront',
    'opera m(ob|in)i',
    'palm( os)?',
    'phone',
    'p(ixi|re)\/',
    'plucker',
    'pocket',
    'psp',
    'series(4|6)0',
    'symbian',
    'treo',
    'up\.(browser|link)',
    'vodafone',
    'wap',
    'windows ce',
    'xda',
    'xiino'
];

$uaMobile = [
    '1207', 
    '6310', 
    '6590', 
    '3gso', 
    '4thp', 
    '50[1-6]i', 
    '770s', 
    '802s', 
    'a wa', 
    'abac|ac(er|oo|s\-)', 
    'ai(ko|rn)', 
    'al(av|ca|co)', 
    'amoi', 
    'an(ex|ny|yw)', 
    'aptu', 
    'ar(ch|go)', 
    'as(te|us)', 
    'attw', 
    'au(di|\-m|r |s )', 
    'avan', 
    'be(ck|ll|nq)', 
    'bi(lb|rd)', 
    'bl(ac|az)', 
    'br(e|v)w', 
    'bumb', 
    'bw\-(n|u)', 
    'c55\/', 
    'capi', 
    'ccwa', 
    'cdm\-', 
    'cell', 
    'chtm', 
    'cldc', 
    'cmd\-', 
    'co(mp|nd)', 
    'craw', 
    'da(it|ll|ng)', 
    'dbte', 
    'dc\-s', 
    'devi', 
    'dica', 
    'dmob', 
    'do(c|p)o', 
    'ds(12|\-d)', 
    'el(49|ai)', 
    'em(l2|ul)', 
    'er(ic|k0)', 
    'esl8', 
    'ez([4-7]0|os|wa|ze)', 
    'fetc', 
    'fly(\-|_)', 
    'g1 u', 
    'g560', 
    'gene', 
    'gf\-5', 
    'g\-mo', 
    'go(\.w|od)', 
    'gr(ad|un)', 
    'haie', 
    'hcit', 
    'hd\-(m|p|t)', 
    'hei\-', 
    'hi(pt|ta)', 
    'hp( i|ip)', 
    'hs\-c', 
    'ht(c(\-| |_|a|g|p|s|t)|tp)', 
    'hu(aw|tc)', 
    'i\-(20|go|ma)', 
    'i230', 
    'iac( |\-|\/)', 
    'ibro', 
    'idea', 
    'ig01', 
    'ikom', 
    'im1k', 
    'inno', 
    'ipaq', 
    'iris', 
    'ja(t|v)a', 
    'jbro', 
    'jemu', 
    'jigs', 
    'kddi', 
    'keji', 
    'kgt( |\/)', 
    'klon', 
    'kpt ', 
    'kwc\-', 
    'kyo(c|k)', 
    'le(no|xi)', 
    'lg( g|\/(k|l|u)|50|54|\-[a-w])', 
    'libw', 
    'lynx', 
    'm1\-w', 
    'm3ga', 
    'm50\/', 
    'ma(te|ui|xo)', 
    'mc(01|21|ca)', 
    'm\-cr', 
    'me(rc|ri)', 
    'mi(o8|oa|ts)', 
    'mmef', 
    'mo(01|02|bi|de|do|t(\-| |o|v)|zz)', 
    'mt(50|p1|v )', 
    'mwbp', 
    'mywa', 
    'n10[0-2]', 
    'n20[2-3]', 
    'n30(0|2)', 
    'n50(0|2|5)', 
    'n7(0(0|1)|10)', 
    'ne((c|m)\-|on|tf|wf|wg|wt)', 
    'nok(6|i)', 
    'nzph', 
    'o2im', 
    'op(ti|wv)', 
    'oran', 
    'owg1', 
    'p800', 
    'pan(a|d|t)', 
    'pdxg', 
    'pg(13|\-([1-8]|c))', 
    'phil', 
    'pire', 
    'pl(ay|uc)', 
    'pn\-2', 
    'po(ck|rt|se)', 
    'prox', 
    'psio', 
    'pt\-g', 
    'qa\-a', 
    'qc(07|12|21|32|60|\-[2-7]|i\-)', 
    'qtek', 
    'r380', 
    'r600', 
    'raks', 
    'rim9', 
    'ro(ve|zo)', 
    's55\/', 
    'sa(ge|ma|mm|ms|ny|va)', 
    'sc(01|h\-|oo|p\-)', 
    'sdk\/', 
    'se(c(\-|0|1)|47|mc|nd|ri)', 
    'sgh\-', 
    'shar', 
    'sie(\-|m)', 
    'sk\-0', 
    'sl(45|id)', 
    'sm(al|ar|b3|it|t5)', 
    'so(ft|ny)', 
    'sp(01|h\-|v\-|v )', 
    'sy(01|mb)', 
    't2(18|50)', 
    't6(00|10|18)', 
    'ta(gt|lk)', 
    'tcl\-', 
    'tdg\-', 
    'tel(i|m)', 
    'tim\-', 
    't\-mo', 
    'to(pl|sh)', 
    'ts(70|m\-|m3|m5)', 
    'tx\-9', 
    'up(\.b|g1|si)', 
    'utst', 
    'v400', 
    'v750', 
    'veri', 
    'vi(rg|te)', 
    'vk(40|5[0-3]|\-v)', 
    'vm40', 
    'voda', 
    'vulc', 
    'vx(52|53|60|61|70|80|81|83|85|98)', 
    'w3c(\-| )', 
    'webc', 
    'whit', 
    'wi(g |nc|nw)', 
    'wmlb', 
    'wonu', 
    'x700', 
    'yas\-', 
    'your', 
    'zeto', 
    'zte\-'
];

$isPhone = preg_match('/' . implode($uaPhone, '|') . '/i', $uaFull);
$isMobile = preg_match('/' . implode($uaMobile, '|') . '/i', $uaStart);

if($isPhone || $isMobile) {
    // do something with that device
} else {
    // process normally
}