remove last character after concatenating string output by for loop?

Question

$holder = \'\';

foreach($fields as $key){
    $holder .= $key.\', \';
}

echo $holder;

I have the code above, it outputs \"a, b, c, \" I want to r

Answer 1

You can use substr like this

$holder = '';

foreach($fields as $key){
    $holder .= $key.', ';
}
$newholder=substr($holder, 0, -1); 
echo $newholder;