Separate elements from array with a comma

[yoki]

Hi,

I'm trying to separate elements from an array with a comma and put the result into a string variable.

Here is my code:

for ($i=0; $i <$number_co_authors; $i++)
{
$required .= "co_aut".$co_author_row_number[$i]."last_name".","."co_aut".$co_author_row_number[$i]."first_name".","."co_aut".$co_author_row_number[$i]."institution".","."co_aut".$co_author_row_number[$i]."city".","."co_aut".$co_author_row_number[$i]."_country".",";

}

If I do:

echo $required;

it outputs the following:

co_aut1_last_name,co_aut1_first_name,co_aut1_institution,co_aut1_city,co_aut1_country,

Everything is ok except for the comma at the end. I can't find a way to get rid of it. I think my concatenation of the string is not right. Can someone help me? 🙂

[devinemke]

look at [man]implode[/man] and [man]explode[/man]

[yoki]

Thanks,

Implode I will 😉 Sorry I had no clue there was such a function.

[yoki]

Humm now I'm confused on how to implement it in my code...HELP!

[jc94062]

Everything is ok except for the comma at the end. I can't find a way to get rid of it.

$required= substr($required,0,-1);

strips last char...

However...

<?
$number_co_authors = array('co_aut1_last_name',
							'co_aut1_first_name',
							'co_aut1_institution',
							'co_aut1_city',
							'co_aut1_country');

for ($i=0; $i <$number_co_authors; $i++)
{
	$required .= "co_aut".$co_author_row_number[$i]."_last_name".","."co_aut";
	$required .= $co_author_row_number[$i]."_first_name".",";
	$required .= ."co_aut".$co_author_row_number[$i]."_institution".","."co_aut";
	$required .= $co_author_row_number[$i]."_city".","."co_aut".$co_author_row_number[$i]."_country".",";
}

//alternatively

$required = '';
foreach ($number_co_authors as $var)
	$required .= $var.',';

$required = substr($required,0,-1);
echo $required;

?>

Happy coding 🙂