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   1  <?php
   2  /**
   3   * Creates common globals for the rest of WordPress
   4   *
   5   * Sets $pagenow global which is the current page. Checks
   6   * for the browser to set which one is currently being used.
   7   *
   8   * Detects which user environment WordPress is being used on.
   9   * Only attempts to check for Apache and IIS. Two web servers
  10   * with known permalink capability.
  11   *
  12   * @package WordPress
  13   */
  14  
  15  // On which page are we ?
  16  if ( is_admin() ) {
  17      // wp-admin pages are checked more carefully
  18      preg_match('#/wp-admin/?(.*?)$#i', $PHP_SELF, $self_matches);
  19      $pagenow = $self_matches[1];
  20      $pagenow = preg_replace('#\?.*?$#', '', $pagenow);
  21      if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) {
  22          $pagenow = 'index.php';
  23      } else {
  24          preg_match('#(.*?)(/|$)#', $pagenow, $self_matches);
  25          $pagenow = strtolower($self_matches[1]);
  26          if ( '.php' !== substr($pagenow, -4, 4) )
  27              $pagenow .= '.php'; // for Options +Multiviews: /wp-admin/themes/index.php (themes.php is queried)
  28      }
  29  } else {
  30      if ( preg_match('#([^/]+\.php)([?/].*?)?$#i', $PHP_SELF, $self_matches) )
  31          $pagenow = strtolower($self_matches[1]);
  32      else
  33          $pagenow = 'index.php';
  34  }
  35  
  36  // Simple browser detection
  37  $is_lynx = $is_gecko = $is_winIE = $is_macIE = $is_opera = $is_NS4 = $is_safari = $is_chrome = $is_iphone = false;
  38  
  39  if (strpos($_SERVER['HTTP_USER_AGENT'], 'Lynx') !== false) {
  40      $is_lynx = true;
  41  } elseif ( strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'chrome') !== false ) {
  42      $is_chrome = true;
  43  } elseif ( strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'safari') !== false ) {
  44      $is_safari = true;
  45  } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false) {
  46      $is_gecko = true;
  47  } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Win') !== false) {
  48      $is_winIE = true;
  49  } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false) {
  50      $is_macIE = true;
  51  } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false) {
  52      $is_opera = true;
  53  } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Nav') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.') !== false) {
  54      $is_NS4 = true;
  55  }
  56  
  57  if ( $is_safari && strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'mobile') !== false )
  58      $is_iphone = true;
  59  
  60  $is_IE = ( $is_macIE || $is_winIE );
  61  
  62  // Server detection
  63  
  64  /**
  65   * Whether the server software is Apache or something else
  66   * @global bool $is_apache
  67   */
  68  $is_apache = ((strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false) || (strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false)) ? true : false;
  69  
  70  /**
  71   * Whether the server software is IIS or something else
  72   * @global bool $is_IIS
  73   */
  74  $is_IIS = (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== false) ? true : false;
  75  
  76  ?>