php - How can I avoid printing the separator when elements are empty in the join()? -

here code:-

echo join(',', ['','']);

as know, prints comma. want avoid that. because elements empty , comma doesn't make sense. comma should deleted in this:

echo join(',', ['sth','']); // expected result: sth

how can that?

just remove empty items of array. can using array_filter() function. try this:

echo join(',', array_filter(['sth','']));

RT