📄 browser.php
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$this->setFeature('svg');
}
$this->setFeature('xhtml+xml');
} elseif (preg_match('|W3C_Validator/([0-9.]+)|', $this->_agent, $version)) {
$this->setFeature('mathml');
$this->setFeature('svg');
$this->setFeature('xhtml+xml');
} elseif (preg_match('|ANTFresco/([0-9]+)|', $this->_agent, $version)) {
$this->setBrowser('fresco');
$this->setFeature('javascript', 1.5);
$this->setQuirk('avoid_popup_windows');
} elseif (strpos($this->_lowerAgent, 'avantgo') !== false) {
$this->setBrowser('avantgo');
$this->_mobile = true;
} elseif (preg_match('|Konqueror/([0-9]+)|', $this->_agent, $version) ||
preg_match('|Safari/([0-9]+)\.?([0-9]+)?|', $this->_agent, $version)) {
// Konqueror and Apple's Safari both use the KHTML
// rendering engine.
$this->setBrowser('konqueror');
$this->setQuirk('empty_file_input_value');
$this->setQuirk('no_hidden_overflow_tables');
$this->_majorVersion = $version[1];
if (isset($version[2])) {
$this->_minorVersion = $version[2];
}
if (strpos($this->_agent, 'Safari') !== false &&
$this->_majorVersion >= 60) {
// Safari.
$this->setFeature('utf');
$this->setFeature('javascript', 1.4);
$this->setFeature('dom');
$this->setFeature('iframes');
if ($this->_majorVersion > 125 ||
($this->_majorVersion == 125 &&
$this->_minorVersion >= 1)) {
$this->setFeature('accesskey');
$this->setFeature('xmlhttpreq');
}
if ($this->_majorVersion > 522) {
$this->setFeature('svg');
$this->setFeature('xhtml+xml');
}
} else {
// Konqueror.
$this->setFeature('javascript', 1.5);
switch ($this->_majorVersion) {
case 3:
$this->setFeature('dom');
$this->setFeature('iframes');
$this->setFeature('xhtml+xml');
break;
}
}
} elseif (preg_match('|Mozilla/([0-9.]+)|', $this->_agent, $version)) {
$this->setBrowser('mozilla');
$this->setQuirk('must_cache_forms');
list($this->_majorVersion, $this->_minorVersion) = explode('.', $version[1]);
switch ($this->_majorVersion) {
case 5:
if ($this->getPlatform() == 'win') {
$this->setQuirk('break_disposition_filename');
}
$this->setFeature('javascript', 1.4);
$this->setFeature('dom');
$this->setFeature('accesskey');
$this->setFeature('optgroup');
$this->setFeature('xmlhttpreq');
$this->setFeature('cite');
if (preg_match('|rv:(.*)\)|', $this->_agent, $revision)) {
if ($revision[1] >= 1) {
$this->setFeature('iframes');
}
if ($revision[1] >= 1.3) {
$this->setFeature('rte');
}
if ($revision[1] >= 1.5) {
$this->setFeature('svg');
$this->setFeature('mathml');
$this->setFeature('xhtml+xml');
}
}
break;
case 4:
$this->setFeature('javascript', 1.3);
$this->setQuirk('buggy_compression');
break;
case 3:
default:
$this->setFeature('javascript', 1);
$this->setQuirk('buggy_compression');
break;
}
} elseif (preg_match('|Lynx/([0-9]+)|', $this->_agent, $version)) {
$this->setBrowser('lynx');
$this->setFeature('images', false);
$this->setFeature('frames', false);
$this->setFeature('javascript', false);
$this->setQuirk('avoid_popup_windows');
} elseif (preg_match('|Links \(([0-9]+)|', $this->_agent, $version)) {
$this->setBrowser('links');
$this->setFeature('images', false);
$this->setFeature('frames', false);
$this->setFeature('javascript', false);
$this->setQuirk('avoid_popup_windows');
} elseif (preg_match('|HotJava/([0-9]+)|', $this->_agent, $version)) {
$this->setBrowser('hotjava');
$this->setFeature('javascript', false);
} elseif (strpos($this->_agent, 'UP/') !== false ||
strpos($this->_agent, 'UP.B') !== false ||
strpos($this->_agent, 'UP.L') !== false) {
$this->setBrowser('up');
$this->setFeature('html', false);
$this->setFeature('javascript', false);
$this->setFeature('hdml');
$this->setFeature('wml');
if (strpos($this->_agent, 'GUI') !== false &&
strpos($this->_agent, 'UP.Link') !== false) {
/* The device accepts Openwave GUI extensions for
* WML 1.3. Non-UP.Link gateways sometimes have
* problems, so exclude them. */
$this->setQuirk('ow_gui_1.3');
}
$this->_mobile = true;
} elseif (strpos($this->_agent, 'Xiino/') !== false) {
$this->setBrowser('xiino');
$this->setFeature('hdml');
$this->setFeature('wml');
$this->_mobile = true;
} elseif (strpos($this->_agent, 'Palmscape/') !== false) {
$this->setBrowser('palmscape');
$this->setFeature('javascript', false);
$this->setFeature('hdml');
$this->setFeature('wml');
$this->_mobile = true;
} elseif (strpos($this->_agent, 'Nokia') !== false) {
$this->setBrowser('nokia');
$this->setFeature('html', false);
$this->setFeature('wml');
$this->setFeature('xhtml');
$this->_mobile = true;
} elseif (strpos($this->_agent, 'Ericsson') !== false) {
$this->setBrowser('ericsson');
$this->setFeature('html', false);
$this->setFeature('wml');
$this->_mobile = true;
} elseif (strpos($this->_lowerAgent, 'wap') !== false) {
$this->setBrowser('wap');
$this->setFeature('html', false);
$this->setFeature('javascript', false);
$this->setFeature('hdml');
$this->setFeature('wml');
$this->_mobile = true;
} elseif (strpos($this->_lowerAgent, 'docomo') !== false ||
strpos($this->_lowerAgent, 'portalmmm') !== false) {
$this->setBrowser('imode');
$this->setFeature('images', false);
$this->_mobile = true;
} elseif (strpos($this->_agent, 'BlackBerry') !== false) {
$this->setBrowser('blackberry');
$this->setFeature('html', false);
$this->setFeature('javascript', false);
$this->setFeature('hdml');
$this->setFeature('wml');
$this->_mobile = true;
} elseif (strpos($this->_agent, 'MOT-') !== false) {
$this->setBrowser('motorola');
$this->setFeature('html', false);
$this->setFeature('javascript', false);
$this->setFeature('hdml');
$this->setFeature('wml');
$this->_mobile = true;
} elseif (strpos($this->_lowerAgent, 'j-') !== false) {
$this->setBrowser('mml');
$this->_mobile = true;
}
}
}
/**
* Match the platform of the browser.
*
* This is a pretty simplistic implementation, but it's intended
* to let us tell what line breaks to send, so it's good enough
* for its purpose.
*/
function _setPlatform()
{
if (strpos($this->_lowerAgent, 'wind') !== false) {
$this->_platform = 'win';
} elseif (strpos($this->_lowerAgent, 'mac') !== false) {
$this->_platform = 'mac';
} else {
$this->_platform = 'unix';
}
}
/**
* Return the currently matched platform.
*
* @return string The user's platform.
*/
function getPlatform() {
return $this->_platform;
}
/**
* Sets the current browser.
*
* @param string $browser The browser to set as current.
*/
function setBrowser($browser) {
$this->_browser = $browser;
}
/**
* Retrieve the current browser.
*
* @return string The current browser.
*/
function getBrowser() {
return $this->_browser;
}
/**
* Retrieve the current browser's major version.
*
* @return integer The current browser's major version.
*/
function getMajor() {
return $this->_majorVersion;
}
/**
* Retrieve the current browser's minor version.
* @return integer The current browser's minor version.
*/
function getMinor() {
return $this->_minorVersion;
}
/**
* Retrieve the current browser's version.
* @return string The current browser's version.
*/
function getVersion() {
return $this->_majorVersion . '.' . $this->_minorVersion;
}
/**
* Return the full browser agent string.
*
* @return string The browser agent string.
*/
function getAgentString() {
return $this->_agent;
}
/**
* Returns the server protocol in use on the current server.
*
* @return string The HTTP server protocol version.
*/
function getHTTPProtocol()
{
if (isset($_SERVER['SERVER_PROTOCOL'])) {
if (($pos = strrpos($_SERVER['SERVER_PROTOCOL'], '/'))) {
return substr($_SERVER['SERVER_PROTOCOL'], $pos + 1);
}
}
return null;
}
/**
* Set unique behavior for the current browser.
*
* @param string $quirk The behavior to set.
* @param string $value Special behavior parameter.
*/
function setQuirk($quirk, $value = true) {
$this->_quirks[$quirk] = $value;
}
/**
* Check unique behavior for the current browser.
*
* @param string $quirk The behavior to check.
* @return boolean Does the browser have the behavior set?
*/
function hasQuirk($quirk) {
return !empty($this->_quirks[$quirk]);
}
/**
* Retrieve unique behavior for the current browser.
*
* @param string $quirk The behavior to retrieve.
* @return string The value for the requested behavior.
*/
function getQuirk($quirk)
{
return isset($this->_quirks[$quirk])
? $this->_quirks[$quirk]
: null;
}
/**
* Set capabilities for the current browser.
*
* @param string $feature The capability to set.
* @param string $value Special capability parameter.
*/
function setFeature($feature, $value = true) {
$this->_features[$feature] = $value;
}
/**
* Check the current browser capabilities.
* @param string $feature The capability to check.
* @return boolean Does the browser have the capability set?
*/
function hasFeature($feature) {
return !empty($this->_features[$feature]);
}
/**
* Retrieve the current browser capability.
*
* @param string $feature The capability to retrieve.
* @return string The value of the requested capability.
*/
function getFeature($feature) {
return isset($this->_features[$feature])
? $this->_features[$feature]
: null;
}
/**
* Determines if a browser can display a given MIME type.
*
* @param string $mimetype The MIME type to check.
* @return boolean True if the browser can display the MIME type.
*/
function isViewable($mimetype)
{
$mimetype = strtolower($mimetype);
list($type, $subtype) = explode('/', $mimetype);
if (!empty($this->_accept)) {
$wildcard_match = false;
if (strpos($this->_accept, $mimetype) !== false) {
return true;
}
if (strpos($this->_accept, '*/*') !== false) {
$wildcard_match = true;
if ($type != 'image') {
return true;
}
}
/* image/jpeg and image/pjpeg *appear* to be the same
* entity, but Mozilla doesn't seem to want to accept the
* latter. For our purposes, we will treat them the
* same.
*/
if ($this->isBrowser('mozilla') &&
($mimetype == 'image/pjpeg') &&
(strpos($this->_accept, 'image/jpeg') !== false)) {
return true;
}
if (!$wildcard_match) {
return false;
}
}
if (!$this->hasFeature('images') || ($type != 'image')) {
return false;
}
return (in_array($subtype, $this->_images));
}
/**
* Determine if the given browser is the same as the current.
*
* @param string $browser The browser to check.
* @return boolean Is the given browser the same as the current?
*/
function isBrowser($browser)
{
return ($this->_browser === $browser);
}
/**
* Determines if the browser is a robot or not.
*
* @return boolean True if browser is a known robot.
*/
function isRobot()
{
foreach ($this->_robots as $robot) {
if (strpos($this->_agent, $robot) !== false) {
return true;
}
}
return false;
}
/**
* Determine if we are using a secure (SSL) connection.
*
* @return boolean True if using SSL, false if not.
*/
function isSSLConnection()
{
return ((isset($_SERVER['HTTPS']) &&
($_SERVER['HTTPS'] == 'on')) ||
getenv('SSL_PROTOCOL_VERSION'));
}
}⌨️ 快捷键说明
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