CODEWITHSUNDEEP
phpcodeigniter
cyberfly
cyberfly

Reputation: 5858

What is the meaning of this php line of code? (codeigniter)

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.

Upvotes: 0

Views: 757

Answers (4)

Lattanzio
Lattanzio

Reputation: 103

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

this: z = ( x > y ? x : y ); is like:

if (x > y)
{
z = x;
}
else
{
z = y;
}

this: $this->input->get_post('id')

mean you are in an object (class), with an other class "input" and use the methods get_post().

this: (int) x cast x as int.

He choose how assign id, if get_post() is different than 0 or "" use the value of uri-segment(3)

Upvotes: 0

Kamran Khan
Kamran Khan

Reputation: 9986

Ternary operator; same as 

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

Upvotes: 2

jerjer
jerjer

Reputation: 8760

It is a shortcut of these:

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

It is a ternary operator: Syntax:

$id = (condition) ? value_when_condition_is_true : value_when_condition_is_false;

Upvotes: 1

Christian Kuetbach
Christian Kuetbach

Reputation: 16060

Bind post Variable "id" to $id if, it is set. Otherwise use the value of the third url-segment.

Upvotes: 1

Related Questions