PHP，数组到字符串与分隔符

Question

I have an array like this:

Array (
       [3] => 15 
       [30] => 1 
       [1] => 1 )

I want to convert it into a string like this: $string = "3:15;30:1;1:1;"

Thanks you in advance

Answer 1

Given your array, $array:

$str = '';
foreach ($array as $k => $v) {
    $str .= $k . ':' . $v . ';';
}

echo $str; // 3:15;30:1;1:1;