PHP determines the current operating system type, PHP determines the current_PHP tutorial

php determines the current operating system type, php determines the current operating system type

How to use php to get the current operating system type? Strictly speaking, there are two situations. One is to obtain the operating system type of the server, and the other is to obtain the operating system type of the client. The author below will share with you how to use php to obtain the operating system type in these two situations.
(1)php obtains the operating system type of server side
At this time, you can use the PHP system's own constant PHP_OS or system function php_uname('s') . There are basically the following possible situations for the values ​​returned by these two:

• CYGWIN_NT-5.1
• Darwin
• FreeBSD
• HP-UX
• IRIX64
• Linux
• NetBSD
• OpenBSD
• SunOS
• Unix
• WIN32
• WINNT
• Windows
• CYGWIN_NT-5.1
• IRIX64
• SunOS
• HP-UX
• OpenBSD

However, depending on the specific situation, it is best for readers to print out the results themselves and see. The results obtained may not be among the above.
(2) PHP obtains the operating system type of the client . Here is a function that is more accurate than those circulating on the Internet and has no bugs. The function code is as follows:

function getOS(){ 
 $os=''; 
 $Agent=$_SERVER['HTTP_USER_AGENT']; 
 if (eregi('win',$Agent)&&strpos($Agent, '95')){ 
  $os='Windows 95'; 
 }elseif(eregi('win 9x',$Agent)&&strpos($Agent, '4.90')){ 
  $os='Windows ME'; 
 }elseif(eregi('win',$Agent)&&ereg('98',$Agent)){ 
  $os='Windows 98'; 
 }elseif(eregi('win',$Agent)&&eregi('nt 5.0',$Agent)){ 
  $os='Windows 2000'; 
 }elseif(eregi('win',$Agent)&&eregi('nt 6.0',$Agent)){ 
  $os='Windows Vista'; 
 }elseif(eregi('win',$Agent)&&eregi('nt 6.1',$Agent)){ 
  $os='Windows 7'; 
 }elseif(eregi('win',$Agent)&&eregi('nt 5.1',$Agent)){ 
  $os='Windows XP'; 
 }elseif(eregi('win',$Agent)&&eregi('nt',$Agent)){ 
  $os='Windows NT'; 
 }elseif(eregi('win',$Agent)&&ereg('32',$Agent)){ 
  $os='Windows 32'; 
 }elseif(eregi('linux',$Agent)){ 
  $os='Linux'; 
 }elseif(eregi('unix',$Agent)){ 
  $os='Unix'; 
 }else if(eregi('sun',$Agent)&&eregi('os',$Agent)){ 
  $os='SunOS'; 
 }elseif(eregi('ibm',$Agent)&&eregi('os',$Agent)){ 
  $os='IBM OS/2'; 
 }elseif(eregi('Mac',$Agent)&&eregi('PC',$Agent)){ 
  $os='Macintosh'; 
 }elseif(eregi('PowerPC',$Agent)){ 
  $os='PowerPC'; 
 }elseif(eregi('AIX',$Agent)){ 
  $os='AIX'; 
 }elseif(eregi('HPUX',$Agent)){ 
  $os='HPUX'; 
 }elseif(eregi('NetBSD',$Agent)){ 
  $os='NetBSD'; 
 }elseif(eregi('BSD',$Agent)){ 
  $os='BSD'; 
 }elseif(ereg('OSF1',$Agent)){ 
  $os='OSF1'; 
 }elseif(ereg('IRIX',$Agent)){ 
  $os='IRIX'; 
 }elseif(eregi('FreeBSD',$Agent)){ 
  $os='FreeBSD'; 
 }elseif($os==''){ 
  $os='Unknown'; 
 } 
 return $os; 
} 

The method to be adopted depends on the server or the client. I hope that through this article you will know how to use php to get the current operating system type.

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