Codeigniter电子邮件类，如果是意外的话

I am trying to send email use codeigniter email class via passing data into the following parenthese .

 $this->email->message('Whatever message you want to email')

The following works

$this->email->message('Your name is '.$data->name.'');

but the following will give the error. "unexpected if"

$this->email->message('You have ordered:'.
                       if(isset($result->order)){
                            //show order detail
                        }else{
                            "nothing"
                       }.'');

What is the correct way to achieve this.

and also if I want to include a foreach loop after the if(isset how would that work.

if is NOT a function. It cannot be used as a "data source" for variable assignments.

$foo = if(...) { ... } // illegal syntax.

should be written as

if (...) {
   $foo = true result
else {
   $foo = false result
}

$this->email->message('You have ordered:'. $foo);

You are looking for the "ternary operator":

<?php
$this->email->message('You have ordered: ' . isset($result->order) ? '...' : 'nothing');

Here the '...' obviously is only a placeholder for whatever "details" you want to show. This certainly can be a previously prepared string variable.

http://php.net/manual/en/language.operators.comparison.php

It could be like this:

$temp = isset($result->order) ? "" : "nothing";

$this->email->message('You have ordered:'.$temp.'');