If statement with 2 conditions - php

Question

I was practising statements and ran into a problem. I'm trying to make it so that if $child3 is available, then it will echo all three children, like how when $child2 is available, it echos Kim & Pom. What did I do wrong?
$child = "Kim";
$child2 = "Pom";
$child3 = "Rob";
if($child2) {
echo $child; echo " "; echo $child2;
} elseif($child3) {
echo $child; echo " "; echo $child2; echo " "; echo $child3;
} else {
echo $child;
}

Answer 1

Try reversing the conditions:
$child = "Kim";
$child2 = "Pom";
$child3 = "Rob";
if($child3){
echo $child . " " . $child2 . " " . $child3;
}else if($child2){
echo $child . " " . $child2;
}else{
echo $child;
}
You might also like the wonderful string concatenation operator ..

Answer 2

elseif only executes if none of the preceding ifs or elseifs executed. So you'll want to move it above the other if:
if($child3) {
echo $child; echo " "; echo $child2; echo " "; echo $child3;
} elseif($child2) {
echo $child; echo " "; echo $child2;
} else {
echo $child;
}

Answer 3

Probably you want something like this:
$child = 1; // Or $child = 2; Or $child = 3;
if ($child == 1) {
echo 'Kim';
} elseif ($child == 2) {
echo 'Pom';
} else {
echo 'Rob';
}
But I recommend switch() as soon as you have elseif.

Answer 4

$child = "Kim";
$child2 = "Pom";
$child3 = "Rob";
if($child3){
echo $child; echo " "; echo $child2; echo " "; echo $child3;
}elseif($child2){
echo $child; echo " "; echo $child2;
}else{
echo $child;
}

Answer 5

How about this?
if ($child) {
echo "{$child} ";
}
if ($child2) {
echo "{$child2} ";
}
if ($child3) {
echo "{$child3} ";
}

Answer 6

If that's your actual code, you'll only ever get Kim Rob, as $child2 will always be true, thereby bypassing your else clauses.
Also, you can combine your echos into:
echo "$child $child2 $child3";
It makes it far easier to read that way.

Answer 7

Here's how I would do it. I agree with Dragon that a switch would be clearer/better.
switch (true)
{
case (isset($child,$child2,$child3)) :
echo $child . ' ' . $child2 . ' ' . $child3;
break;
case (isset($child, $child2)) :
echo $child . ' ' . $child2;
break;
case (isset($child)) :
echo $child;
break;
}