将关联数组值存储为逗号分隔的字符串

Question

I have an associative array and I can store its values comma-separated, in a string.

Associative Array has keys/values

0 => 1
1 => 3

I have tried this

$selected_sizes_comma_seprated = "";
foreach ($selected_sizes as $size) {
    $selected_sizes_comma_seprated .= $size.',';
}
// Remove last comma in string
$selected_sizes_comma_seprated = substr($selected_sizes_comma_seprated, 0,-1);

This works fine as I want.

My question is that is there any other better solution to achieve this

Answer 1

implode() does just that:

$selected_sizes = array(0 => 1, 1 => 3);

$selected_sizes_comma_seprated = implode(',', $selected_sizes);

echo $selected_sizes_comma_seprated; // 1,3

See demo