php - Check if a String has two or more commas and remove additional commas -

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• explode not work multilpe commas inside string [closed] 8 answers

i've following string in database column named "alerts"

$string = '1,2,,3,4,5,,,6'; 

how go checking if string has 2 or more commas in between numbers , how remove additional commas make string this;

$string = '1,2,3,4,5,6'; 

use code :

$string = '1,2,,3,4,5,,,6'; $arr=explode(",",$string); $string=implode(",",array_filter($arr)); 

or, in 1 line

$string = implode(",",array_filter(explode(",",$string)));