how do i remove the matched character from a string?

Question

here is my code

$a = "Hey there, how do i remove all, the comma from this string,";
$a = str_replace($a,',','';)
echo $a;

i want to remove all the commas available in the string, how do i do it?

Answer 1

$a = "Hey there, how do i remove all, the comma from this string,";
$a = str_replace(',','',$a);
echo $a;

Misplaced semi-colon and wrong function arguments.

Answer 2

$a = str_replace(",", "", $a);