PHP Determines whether server SSL is enabled, which is to determine whether HTTPS connections are supported

Through the PHP function to detect whether the server supports SSL (that is, HTTPS connection), the specific function code is as follows. Also about how to turn on SSL support can refer to this site article:

PHP detects whether the server SSL is turned on and how to turn on SSL

*
* Detect whether the server supports SSL connection (HTTPS connection)
* @return bool/
function Is_ssl () {
	if (!isset ($_server[' https ')) ) return
		FALSE;
	if ($_server[' HTTPS ']===1) {  //apache return
		TRUE;
	} ElseIf ($_server[' HTTPS ']=== ' on ') {//iis return
		TRUE;
	} ElseIf ($_server[' Server_port ']==443) {//other return
		TRUE;
	}
	return FALSE;
}

For example:

echo Is_ssl ()? ' Support ': ' Not supported ';

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