PHP multiple IF statements (with echo), simplier way?

Question

Okay, so all my code is working, I just want to know if there's a simpler way to do it. The code:

if($_POST['A'] == ""){echo "A";}
if($_POST['B'] == ""){echo "B";}
if($_POST['C'] == ""){echo "C";}
if($_POST['A'] == "" && $_Post['B'] == ""){echo "A and B";}
if($_POST['A'] == "" && $_Post['C'] == ""){echo "A and C";}
if($_POST['B'] == "" && $_Post['C'] == ""){echo "B and C";}

Now, what I want to know is rather simple, is there any way to make this simpler? It works fairly well with three variables, but if I were to (for example) circle the whole alphabet, if my memory regarding statistics is correct, it'd be 26! which is equal to 4.0329146e+26. Hell, even circling the first 7 letters, 7! is 5040 possible combinations I'd have to code.

What I'm looking for is something that doesn't exactly have to echo "A and B", but if A is the only thing posted to echo A; if A and B are posted to echo "A" and "B" and to echo an "and" between them; and if A, B, and C are posted to echo "A", "B" and "C" and to echo a "," between the first two and to echo an "and" between the second to last and the last.

I don't know if I'm wanting a function, or a class, or something else. This is probably a simple question in the end run, if so, please forgive my ignorance.

Something like this ? if($_POST){echo implode(' and ', $_POST);} — HamZa
– HamZa, Commented Apr 2, 2013 at 20:54

HamZa · Accepted Answer · 2013-04-02 21:02:22Z

2

For a simple message like "A and B", the following would do the job:

$variables = range('A', 'Z');
echo implode(' and ', $variables);

If you have a $_POST you could do the following:

if($_POST){
    echo implode(' and ', array_keys($_POST));
}

edited Apr 2, 2013 at 21:02

answered Apr 2, 2013 at 20:56

HamZa

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2 Comments

Witold Kowelski Over a year ago

That echo's "and"'s between each value, I'd prefer commas and then "and" at the end. Second, that echo's for each post regardless of whether user inputted data or not, my problem, as I included a typo, == should be !=. Third, that just echo's the variable names, not any more-user-friendly terms. The third issue is not really import at the moment.

HamZa Over a year ago

@WitoldKowelski Are you using a POST variable or is that just an example ?

Brian · Accepted Answer · 2013-04-02 21:41:54Z

1

function format_list( $items )
{
    if ( count( $items ) == 0 )
        return '';
    if ( count( $items ) == 1 )
        return $items[0];

    $last_item = array_pop( $items );
    $list_text = join( ', ', $items ) . ' and ' . $last_item;

    return $list_text;
}

$items = array();
$keys = array( 'A', 'B', 'C' );
foreach ( $keys as $key )
{
    if ( !empty( $_POST[$key] ) )
        $items[] = $key;
}
echo format_list( $items );

edited Apr 2, 2013 at 21:41

answered Apr 2, 2013 at 21:05

Brian

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1 Comment

Witold Kowelski Over a year ago

This does echo the names of the post input fields, I'd like it to echo something more meaningful to the user, but that's for later.In my code though, I had a typo (I should have just copy/pasted the code instead of re-typing it). But one question, if I may, to correct my typo, how would one have it echo the post names that have not been entered? For example, code should have read like: if($_POST['A'] =! ""){echo "A";} etc.?

Artur Rychlewicz · Accepted Answer · 2013-04-02 21:17:17Z

0

$count = count($_POST);
$a = 1;
$str = '';
foreach ( $_POST as $key => $value )
{
     // if u wanna use values just replace $key to $value
     if ( $count > $a++ )
         $str .= $key . ', ';
     else
     {
         $str = rtrim( $str, ', ' );
         $str .= ' and ' . $key;
         $str = ltrim( $str, ' and ' );
     }
}

edited Apr 2, 2013 at 21:17

answered Apr 2, 2013 at 21:04

Artur Rychlewicz

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