如何正确内爆该数组？

Question

I have this array ( $recip ):

Array
(
    [0] => 393451234567
    [1] => 393479876543
)

SMS API provider requires numbers in this format:

recipients[]=393334455666&recipients[]=393334455667

With

$recipients = implode('&recipients[]=',$recip);

I can obtain only this:

393471234567&recipients[]=393459876543

Missing first one " recipients[] " (overall, first one no require the " & " at all).

Answer 1

只需将初始recipients[]=附加到字符串的前面即可：

$recipients = 'recipients[]=' . implode('&recipients[]=',$recip);

Answer 2

Another option:

foreach ($array as $key => $value){
    $array[$key] = (($key == 0) ? '' : '&').'recipients[]='.$value;
}
$result = implode('',$array);

A foreach loop allows you to conctenate your string. I include a check to avoid appending the & on the first part of the string.

Pointing this out as an option, but the other way is simpler!

Answer 3

尝试这个：

vsprintf('recipients[]=%s&recipients[]=%s', $recip);

Answer 4

Another option

foreach ($recip as $ip){
    $array[] = 'recipients[]=' . $ip;
}
$result = implode('&',$array);