Implode with default value if no values - php

Question

I want to show dash(-) if my array is empty after imploding it. Here below is my try so far.
Result with Data in Array -> https://repl.it/HIUy/0
<?php
$array = array(1,2);
$result = array();
foreach ($array as $curr_arr) {
$result[] = $curr_arr;
}
echo 'Array With Data - ' . implode(',', $result);
//Result : Array With Data : 1,2
?>
Result without Data in Array -> https://repl.it/HIVE/0
<?php
$array = array();
$result = array();
foreach ($array as $curr_arr) {
$result[] = $curr_arr;
}
echo 'Array Without Data - ' . implode(',', $result);
//Result : Array With Data - :
?>
As you can see in the second result, I am unable to print anything as my array was blank hence I was unable to print anything.
However, I want to print Dash(-) using implode only by using something like array_filter which I already tried but I am unable to do so. Here I have tried this https://repl.it/HIVP/0
<?php
$array = array();
$result = array();
foreach ($array as $curr_arr) {
$result[] = $curr_arr;
}
echo 'Array With Data : ' . implode(',', array_filter($result));
//Result : Array With Data :
?>
Can someone guide me how to achieve this ?
Thanks

Answer 1

You can check if your array is empty and then return/ echo a Dash:
if(!empty($array)){
// Array contains values, everything ok
echo 'Array with data - ' . implode('yourGlueHere', $array);
} else {
// Array is empty
echo 'Array without data -';
}
If you want to have it in one line, you could do something like the following:
echo 'Array with' . empty($array) == false ? '' : 'out' . 'data - ' . empty($array) == false ? implode('glue', $array) : '';

Answer 2

Answers posted by Tobias F. and Gopi Chand is correct.
Approach 1:
I'd suggest you going this way would help you (Basically using ternary operator).
As here is no other way of doing this using just implode function.
echo empty($result) ? '-' : implode(',',$result);
Approach 2
Using a helper function like this.
function myImpllode($glue = "", $array = [])
{
if(!empty($array)){
// Array contains values, everything ok
return implode($glue, $array);
} else {
// Array is empty
return '-';
}
}