how to remove last char from string

Question

It might be a simple task. But I am new to PHP.

I am creating a string of values getting from database for a specific purpose.

How to remove last char from s

Answer 1

You might be better of just to use implode instead of this loop?

implode ( "##" , $dataarray  );

Answer 2

<?php
$str = "1,2,3,4,5,";
echo chop($str,",");
?>

It will remove last comma (,) from the string $str

Answer 3

Use substr:

$str = substr($str,0, -2);

http://php.net/manual/en/function.substr.php