Sorry if this is confusing. It's tough for me to put into words having beginner knowledge of PHP.
I'm using the following foreach loop:
foreach ($_POST['technologies'] as $technologies){ echo ", " . $technologies; } Which produces:
, First, Second, Third
What I want:
First, Second, Third
All I need is for the loop to skip the echo ", " for the first key. How can I accomplish that?
You can pull out the indices of each array item using => and not print a comma for the first item:
foreach ($_POST['technologies'] as $i => $technologies) { if ($i > 0) { echo ", "; } echo $technologies; } Or, even easier, you can use implode($glue, $pieces), which "returns a string containing a string representation of all the array elements in the same order, with the glue string between each element":
echo implode(", ", $_POST['technologies']); 
For general case of doing something in every but first iteration of foreach loop:
$first = true; foreach ($_POST['technologies'] as $technologies){ if(!$first) { echo ", "; } else { $first = false; } echo $technologies; } but implode() is best way to deal with this specific problem of yours:
echo implode(", ", $_POST['technologies']); You need some kind of a flag:
$i = 1; foreach ($_POST['technologies'] as $technologies){ if($i > 1){ echo ", " . $technologies; } else { echo $technologies; } $i++; } Adding an answer that deals with all types of arrays using whatever the first key of the array is:
# get the first key in array using the current iteration of array_keys (a.k.a first) $firstKey = current(array_keys($array)); foreach ($array as $key => $value) { # if current $key !== $firstKey, prepend the , echo ($key !== $firstKey ? ', ' : ''). $value; } Why don't you simply use PHP builtin function implode() to do this more easily and with less code?
Like this:
<?php $a = ["first","second","third"]; echo implode($a, ", "); So as per your case, simply do this:
echo implode($_POST['technologies'], ", "); 