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PHPでユーザエージェントや引数からデバイスを判定

Last updated at Posted at 2017-03-07

メモ。

Device.class.php
/**
 * デバイス
 *
 * @method is_smartphone
 * @method is_fb_crawler
 * @method pc_or_android_or_ios
 * @method check_strict
 */
class Device
{
	/**
	 * スマホか判定
	 * @param  string $ua ユーザエージェント
	 * @return boolean スマートフォンからのアクセスか否か
	 */
	static public function is_smartphone($ua = null)
	{
		if ( is_null($ua) ) {
			$ua = $_SERVER['HTTP_USER_AGENT'];
		}

		if ( preg_match('/iPhone|iPod|iPad|Android/ui', $ua) ) {
			return true;
		} else {
			return false;
		}
	}


	/**
	 * Facebookのクローラか判定
	 * @return boolean Facebookのクローラか否か
	 */
	static public function is_fb_crawler()
	{
		if ( isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/^facebookexternalhit/u', $_SERVER['HTTP_USER_AGENT']) ) {
			return true;
		} else {
			return false;
		}
	}


	/**
	 * デバイス判定
	 * @param  string $ua ユーザエージェント
	 * @return string pc|android|ios
	 */
	static public function pc_or_android_or_ios($ua = null)
	{
		if ( is_null($ua) ) {
			$ua = $_SERVER['HTTP_USER_AGENT'];
		}

		if ( preg_match('/iPhone|iPod|iPad/ui', $ua) ) {
			return 'ios';
		} else if ( preg_match('/Android/ui', $ua) ) {
			return 'android';
		} else {
			return 'pc';
		}
	}


	/**
	 * 厳密にデバイスを判定
	 * @param  string $ua ユーザエージェント
	 * @return string|boolean デバイス。Windows|Macintosh|iPhone|iPad|iPod|Android|AndroidTablet|WindowsPhone|false(一致なし)
	 */
	static public function check_strict($ua = null)
	{
		if ( is_null($ua) ) {
			$ua = $_SERVER['HTTP_USER_AGENT'];
		}

		if ( preg_match('/Windows Phone/ui', $ua) ) { //UAにAndroidも含まれるので注意
			return 'WindowsPhone';
		} else if ( preg_match('/Windows/', $ua) ) {
			return 'Windows';
		} else if ( preg_match('/Macintosh/', $ua) ) {
			return 'Macintosh';
		} else if ( preg_match('/iPhone/', $ua) ) {
			return 'iPhone';
		} else if ( preg_match('/iPad/', $ua) ) {
			return 'iPad';
		} else if ( preg_match('/iPod/', $ua) ) {
			return 'iPod';
		} else if ( preg_match('/Android/', $ua) ) {
			if ( preg_match('/Mobile/', $ua) ) {
				return 'Android';
			} else {
				return 'AndroidTablet';
			}
		} else {
			return false;
		}
	}
}
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