Automattic\WPSC\Device_Detection

User_Agent_Info::is_ie_browser │ public static │ WPSCache 1.0

Detect IE browser

Method of the class: User_Agent_Info{}

No Hooks.

Returns

null. Nothing (null).

Usage

$result = User_Agent_Info::is_ie_browser( $user_agent );
$user_agent(string|null)
User agent string to check. If not provided, uses $_SERVER['HTTP_USER_AGENT'].
Default: null

User_Agent_Info::is_ie_browser() code WPSCache 3.1.0

wp-super-cache/src/device-detection/class-user-agent-info.php 
public static function is_ie_browser( $user_agent = null ) {
	$user_agent = self::maybe_get_user_agent_from_server( $user_agent );
	if ( empty( $user_agent ) ) {
		return false;
	}

	$ua = wp_unslash( $user_agent ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- This is validating.
	if ( false === ( strpos( $ua, 'MSIE' ) || strpos( $ua, 'Trident/7' ) ) ) {
		return false;
	}
	return true;
}