Remove comma from string in php

Question

suppose the value is

1,2,,4,5,6 - For this i can use str_replace(",,",",",$mystring) to get 1,2,4,5,6

How to get values like 2,4,5,6 from ,2,,4,5,6 where two or more consecutive commas are replaced by a single comma and if comma comes before any value it is neglected.If there is only commas like ,,,,,, then empty value is returned.

how to do this in php.

Answer 1

You can explode the string by comma first and then implode after filtering the empty strings.

$val=",2,,4,5,6";
$parts=explode(",",$val);
$parts=array_filter($parts);
echo(implode(",",$parts));

Note that this will also filter 0 from your values. If you want to keep the zeros, refer this question

Answer 2

You can do what you did on your first problem...

Then use trim() to remove unnecessary commas at the front or end of the string.

$mystring = ',2,,4,5,6';

$output = str_replace(',,', ',', $mystring);

echo trim($output, ',');

//Output will be: 2,4,5,6