函數``preg_match（）`函數在下面的代碼中如何替換`eregi（）`函數？

eregi()函數在這裏可以用preg_match()函數替換下面給出的代碼如何？函數``preg_match（）`函數在下面的代碼中如何替換`eregi（）`函數？

function getOS($userAgent) { 
    // Create list of operating systems with operating system name as array key 
    $oses = array (
     'iPhone' => '(iPhone)', 
     'Windows 3.11' => 'Win16', 
     'Windows 95' => '(Windows 95)|(Win95)|(Windows_95)', // Use regular expressions as value to identify operating system 
     'Windows 98' => '(Windows 98)|(Win98)', 
     'Windows 2000' => '(Windows NT 5.0)|(Windows 2000)', 
     'Windows XP' => '(Windows NT 5.1)|(Windows XP)', 
     'Windows 2003' => '(Windows NT 5.2)', 
     'Windows Vista' => '(Windows NT 6.0)|(Windows Vista)', 
     'Windows 7' => '(Windows NT 6.1)|(Windows 7)', 
     'Windows NT 4.0' => '(Windows NT 4.0)|(WinNT4.0)|(WinNT)|(Windows NT)', 
     'Windows ME' => 'Windows ME', 
     'Open BSD'=>'OpenBSD', 
     'Sun OS'=>'SunOS', 
     'Linux'=>'(Linux)|(X11)', 
     'Safari' => '(Safari)', 
     'Macintosh'=>'(Mac_PowerPC)|(Macintosh)', 
     'QNX'=>'QNX', 
     'BeOS'=>'BeOS', 
     'OS/2'=>'OS/2', 
     'Search Bot'=>'(nuhk)|(Googlebot)|(Yammybot)|(Openbot)|(Slurp/cat)|(msnbot)|(ia_archiver)' 
    ); 

    foreach($oses as $os=>$pattern){ // Loop through $oses array 
    // Use regular expressions to check operating system type 
     if(eregi($pattern, $userAgent)) { // Check if a value in $oses array matches current user agent. 
      return $os; // Operating system was matched so return $oses key 
     } 
    } 
    return 'Unknown'; // Cannot find operating system so return Unknown 
}

來源

2012-03-31 OM The Eternity

這是功課嗎？ – 2012-03-31 07:53:17

您必須添加一個「i」正確的模式分隔符後，爲使不區分大小寫的匹配

這樣：

a|b

將是：

/a|b/i

要在preg_match之前快速寫下：

$pattern='/'.$pattern.'/i';

否則，你必須改變所有的模式和替代是這樣的：

(Linux)|(X11)

成爲

/(Linux)|(X11)/i

來源

2012-03-31 07:52:47 kappa

+1請詳細說明，我必須在那裏做，以及如何？在代碼中顯示我 – 2012-03-31 07:53:32

謝謝它的工作...... :) – 2012-03-31 07:59:58

:)我在iPhone上..所以我寫作很慢 – kappa 2012-03-31 08:01:07

您可以使用

if(preg_match("#".$pattern."#", $userAgent)) {

或

if(preg_match('`'.$pattern.'`i', $userAgent)) {

來源

2013-08-24 01:56:45 devcline

函數``preg_match（）`函數在下面的代碼中如何替換`eregi（）`函數？

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