Question

So today i play with the http://bambooinvoice.org/ source code and i found this line:

$id = ($this->input->get_post('id')) ? (int) $this->input->get_post('id') : $this->uri->segment(3);

I already understand the basic syntax use in codeigniter but hope someone can tell me what is the use of this symbol (?) between the two syntax? If it some kind of technique, what is the name of the technique? What is he trying to achieve with this line of code?

Thanks.

Answer 1

Ternary operator; same as

if(($this->input->get_post('id')) == true)
{ 
$id =(int) $this->input->get_post('id')
} 
else 
{
$id=$this->uri->segment(3);
}