How to remove last comma (,) from array? - php

Question

I've gone through this address:
Passing an array to a query using a WHERE clause
and found that if I use a join clause to separate values , is also at the end of the array. How can I remove last?
I am using like this
$ttst=array();
$ttst=array();
$tt = "SELECT frd_id FROM network WHERE mem_id='$userId'";
$appLdone = execute_query($tt, true, "select");
foreach($appLdone as $kk=>$applist){
$ttst[] = $applist['frd_id'];
}
$result = implode(',', $ttst);
then also coming last ,
Thanks.
but it doesn't give single quote to each value .

Answer 1

join(',', array_filter($galleries))
array_filter gets rid of empty elements that you seem to have. Of course, you should take care not to have empty elements in there in the first place.

Answer 2

You could use trim() (or rtrim()):
$myStr = 'planes,trains,automobiles,';
$myStr = trim($myStr, ',');

Answer 3

$str = "orange,banana,apple,";
$str = rtrim($str,',');
This will result in
$str = "orange,banana,apple";
Update
Based on your situation:
$result = implode(',', $ttst);
$result = rtrim($result,',');

Answer 4

$arr = array(...);
$last = end($arr);
unset($last);

Answer 5

If the trailing "," is an array element of itself, use array_pop(), else, use rtrim()
$array = array('one','two',3,',');
array_pop($array);
print_r($array);
Gives:
Array ( [0] => one 1 => two 2 => 3
)

Answer 6

No need for length. Just take from beginning to the (last character - 1)
$finalResult = $str = substr($result, 0, -1);

Answer 7

Use implode() instead! See Example #1 here http://php.net/manual/en/function.implode.php
Edit:
I think a quick fix would be (broken down in steps):
$temp = rtrim(implode(',', $ttst), ','); //trim last comma caused by last empty value
$temp2 = "'"; //starting quote
$temp2 .= str_replace(",", "','", $temp); //quotes around commas
$temp2 .= "'"; //ending quote
$result = $temp2; // = 'apples','bananas','oranges'
This should give you single-quote around the strings, but note that if some more values in the array are sometimes empty you will probably have to write a foreach loop and build the string.