sample php encrypt decrypt

	public function my_simple_crypt( $string, $secret_key='my_simple_secret_key', $secret_iv = 'my_simple_secret_iv', $action = 'encrypt' ) {
		$encrypt_method = "AES-256-CBC";
		$key = hash( 'sha256', $secret_key );
		$iv = substr( hash( 'sha256', $secret_iv ), 0, 16 );
		return $action == 'encrypt' ? base64_encode( openssl_encrypt( $string, $encrypt_method, $key, 0, $iv ) )  :  openssl_decrypt( base64_decode( $string ), $encrypt_method, $key, 0, $iv );
	}