wp_cache_check_mobile() WPSCache 1.0

From https://wordpress.org/plugins/wordpress-mobile-edition/ by Alex King

No Hooks.

Return

Null. Nothing.

Usage

wp_cache_check_mobile( $cache_key );

Code of wp_cache_check_mobile() wp cache check mobile ^{WPSCache 1.7.1}

<?php
function wp_cache_check_mobile( $cache_key ) {
	global $wp_cache_mobile_enabled, $wp_cache_mobile_browsers, $wp_cache_mobile_prefixes;
	if ( !isset( $wp_cache_mobile_enabled ) || false == $wp_cache_mobile_enabled )
		return $cache_key;

	wp_cache_debug( "wp_cache_check_mobile: $cache_key" );

	// allow plugins to short circuit mobile check. Cookie, extra UA checks?
	switch( do_cacheaction( 'wp_cache_check_mobile', $cache_key ) ) {
	case "normal":
		wp_cache_debug( 'wp_cache_check_mobile: desktop user agent detected by wp_cache_check_mobile action' );
		return $cache_key;
		break;
	case "mobile":
		wp_cache_debug( 'wp_cache_check_mobile: mobile user agent detected by wp_cache_check_mobile action' );
		return $cache_key . "-mobile";
		break;
	}

	if ( !isset( $_SERVER[ "HTTP_USER_AGENT" ] ) ) {
		return $cache_key;
	}

	if ( do_cacheaction( 'disable_mobile_check', false ) ) {
		wp_cache_debug( 'wp_cache_check_mobile: disable_mobile_check disabled mobile check' );
		return $cache_key;
	}

	$browsers = explode( ',', $wp_cache_mobile_browsers );
	$user_agent = strtolower( $_SERVER['HTTP_USER_AGENT'] );
	foreach ($browsers as $browser) {
		if ( strstr( $user_agent, trim( strtolower( $browser ) ) ) ) {
			wp_cache_debug( 'mobile browser detected: ' . $browser );
			return $cache_key . '-' . wp_cache_mobile_group( $user_agent );
		}
	}
	if (isset($_SERVER['HTTP_X_WAP_PROFILE']) )
		return $cache_key . '-' . $_SERVER['HTTP_X_WAP_PROFILE'];
	if (isset($_SERVER['HTTP_PROFILE']) )
		return $cache_key . '-' . $_SERVER['HTTP_PROFILE'];

	if ( isset( $wp_cache_mobile_prefixes ) ) {
		$browsers = explode( ',', $wp_cache_mobile_prefixes );
		foreach ($browsers as $browser_prefix) {
			if ( substr($user_agent, 0, 4) == $browser_prefix ) {
				wp_cache_debug( 'mobile browser (prefix) detected: ' . $browser_prefix );
				return $cache_key . '-' . $browser_prefix;
			}
		}
	}
	$accept = isset( $_SERVER[ 'HTTP_ACCEPT' ] ) ? strtolower( $_SERVER[ 'HTTP_ACCEPT' ] ) : '';
	if (strpos($accept, 'wap') !== false) {
		return $cache_key . '-' . 'wap';
	}

	if (isset($_SERVER['ALL_HTTP']) && strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false) {
		return $cache_key . '-' . 'operamini';
	}

	return $cache_key;
}