Multiple returning - php

Question

Could anyone help me.
I need to return multiple img's, but with this code, only one of two is returning.
What is the solution.
Thank you in advance.
$test = "/claim/img/box.png, /claim/img/box.png";
function test($test)
{
$photo = explode(',', $test);
for ($i = 0; $i < count($photo); $i++)
{
$returnas = "<img src=".$photo[$i].">";
return $returnas;
}
}

Answer 1

This might be a good opportunity to learn about array_map.
function test($test) {
return implode("",array_map(function($img) {
return "<img src='".trim($img)."' />";
},explode(",",$test)));
}
Many functions make writing code a lot simpler, and it's also faster because it uses lower-level code.
While we're on the subject of learning things, PHP 5.5 gives us generators. You could potentially use one here. For example:
function test($test) {
$pieces = explode(",",$test);
foreach($pieces as $img) {
yield "<img src='".trim($img)."' />";
}
}
That yield is where the magic happens. This makes your function behave like a generator. You can then do this:
$images = test($test);
foreach($images as $image) echo $image;
Personally, I think this generator solution is a lot cleaner than the array_map one I gave earlier, which in turn is tidier than manually iterating.

Answer 2

Modify your code that way
function test($test)
{
$returnas = '';
$photo = explode(',', $test);
for ($i = 0; $i < count($photo); $i++)
{
$returnas .= "<img src=".$photo[$i].">";
}
return $returnas;
}
Your code didn't work since you were returning inside the loop immediatly. Every programming language support "only a return for call". In my solution you're appendig a string that has an img tag each time you enter the loop and return it after every photo is "passed" into the loop
You could even use the foreach() construct, of course
Bonus answer
If you don't know the difference between ...
for ($i = 0; $i < count($photo); $i++)
and
for ($i = 0, $count = count($photo); $i < $<; $i++)
Well, in first case you'll evaluate count($photo) every single time the for is called whereas the second time, it is evaluated only once.
This could be used for optimization porpuses (even if php, internally, stores the length of an array so it is accesible in O(1))

Answer 3

The function breaks after the first return statement. You need to save what you want to return in some structure, an array eg, and return this.
function test($test)
{
$result = array();
$photo = explode(',', $test);
for ($i = 0; $i < count($photo); $i++)
{
$returnas = "<img src=".$photo[$i].">";
$result[] = $returnas;
}
return $result;
}