删除php中的if / else语句

Question

I am trying to learn PHP, and I am playing around with if loops, just to learn how to use them. I have made 8 variables containing a letter. After this I have made 8 if/else sentences that is writing these letters out.

<?php

$letter1 = 'N';
    $letter2 = 'E';
    $letter3 = 'K';
    $letter4 = 'T';
    $letter5 = 'A';
    $letter6 = 'R';
    $letter7 = 'I';
    $letter8 = 'A';

    if($letter1 == 'N') {
        echo $letter1;
    }
    else {
        echo 'FALSE';
    }

    if($letter1 == 'N' && $letter2 == 'E') {
        echo $letter1.$letter2;
    }
    else {
        echo FALSE;
    }

    if($letter1 == 'N' && $letter2 == 'E' && $letter3 == 'K') {
        echo $letter1.$letter2.$letter3;
    }
    else {
        echo FALSE;
    }

    if($letter1 == 'N' && $letter2 == 'E' && $letter3 == 'K' && $letter4 == 'T') {
        echo $letter1.$letter2.$letter3.$letter4;
    }

    else {
    echo FALSE;
    }

    if($letter1 == 'N' && $letter2 == 'E' && $letter3 == 'K' && $letter4 == 'T' && $letter5 == 'A') {
        echo $letter1.$letter2.$letter3.$letter4.$letter5;
    }
    else {
        echo FALSE;
    }

    if($letter1 == 'N' && $letter2 == 'E' && $letter3 == 'K' && $letter4 == 'T' && $letter5 == 'A' && $letter6 == 'R') {
        echo $letter1.$letter2.$letter3.$letter4.$letter5.$letter6;
    }
    else {
        echo FALSE;
    }

    if($letter1 == 'N' && $letter2 == 'E' && $letter3 == 'K' && $letter4 == 'T' && $letter5 == 'A' && $letter6 == 'R' && $letter7 == 'I') {
        echo $letter1.$letter2.$letter3.$letter4.$letter5.$letter6.$letter7;
    }
    else {
        echo FALSE;
    }

    if($letter1 == 'N' && $letter2 == 'E' && $letter3 == 'K' && $letter4 == 'T' && $letter5 == 'A' && $letter6 == 'R' && $letter7 == 'I' && $letter8 == 'A') {
        echo $letter1.$letter2.$letter3.$letter4.$letter5.$letter6.$letter7.$letter8;
    }
    else {
        echo FALSE;
    }

?>

So the output of this is:

NNENEKNEKTNEKTANEKTARNEKTARINEKTARIA

I have to questions I hope you can help me with. 1: If I want the output to be: N NE NEK NEKT etc etc. How do I make the space between then lines. Fx like html

2: can I do anything to ignore my if/else statements afterwords? Fx if I only wants to write out "Nektaria" and not N, NE, NEK, NEKT etc. I could of course just delete them, but it is just to make some small assignments for myself.

Best Regards Mads

Answer 1

To answer your first question about spaces, then you would have to add those in your echo example:

echo $letter1.$letter2. ' ';

For you second question, you could use switch and sort of make a menu with numbers. Example if 4 was pressed then print out whatever letters.

<?php
switch ($i) {
    case 0:
        echo "i equals 0";
        break;
    case 1:
        echo "i equals 1";
        break;
    case 2:
        echo "i equals 2";
        break;
    default:
       echo "i is not equal to 0, 1 or 2";
}
?>

http://php.net/manual/en/control-structures.switch.php