Need help structuring php

I need some help structuring my php. I am trying to get 3 different searches to work. one search is a regular text search which is default and is what is in the else statement. Here is a barebones of what I am doing to get the 2 searches to work. As you can see the script checked if media "all" was selected and if not, it uses the else statement to show the default search.

if(isset($_GET['media']) && 
    $_GET['media'] == 'all') 
 开发者_JS百科   { //Code goes here for media search for all media results  }


else{ //code goes here for default search}

This works fine for the 2 searches but I have a third search I want to use but dont know how to implement it correctly.

the third search is for only media

if(isset($_GET['media']) && 
    $_GET['media'] == 'only') 
    { //Code goes here for media search for only media results  }

Basically all I am trying to figure out is how to get all 3 searches to work. I know why the first 2 will work because the IF and ELSE but I am not exactly sure how I would add in the ONLY media search. Can anyone give me some suggestions? thanks.

This is the cleanest method, and works faster by using a switch statement instead of a conditional if/else block. Also, you can expand it further by just adding new cases (so you don't have to re-factor your if/else blocks in the future):

$media = isset($_GET['media']) ? $_GET['media'] : 'no_media';

switch($media) {
    case 'only':
        // search for only media
       break;
    case 'all':
        // search for text and media
       break;
    default:
        // search for just text, or the default.
       break;
}

Using a switch, PHP does not have to evaluate $_GET['media'] over and over.

I think this is what you mean: You can use elseif as well.

if(isset($_GET['media']) && $_GET['media'] == 'all')
{ 
  // All media search
}
else if(isset($_GET['media']) && $_GET['media'] == 'only')
{
  // Only media search
}
else
{
  // Default search
}

see here

Perhaps this:

if(isset($_GET['media']) && $_GET['media'] == 'all') 
{ //Code goes here for media search for all media results }
else if(isset($_GET['media']) && $_GET['media'] == 'only')
{ //Code goes here for media search for only media results }
else
{ //code goes here for default search }

The elseif should work:

if(isset($_GET['media']) && $_GET['media'] == 'all') { 
//Code goes here for media search for all media results 
}
elseif(isset($_GET['media']) && $_GET['media'] == 'only') {
 //Code goes here for media search for only media results 
}
else{ 
//code goes here for default search
}

you use the elseif(isset($_GET['media']) && $_GET['media'] == 'only')