php - 请我需要有关如何连接电话号码并在开头添加 +234 的帮助，并且仍然用逗号与以下一个分开

Question

<?php
$phonenumber = 090254,090906,081343;

session_start();
$phonenumbers = $_SESSION['phonenumber'];

$arrayName = array($phonenumbers);

所以请我如何将 +234 添加到已移至下一页的电话号码中，并且仍然用逗号将下一个号码与另一个号码分开。

标签： phpimplode

Answer 1

foreach ($arrayName as $key) {
    $user_status = explode(",", $key);
    //print_r($user_status);
}
$i = 1;
$total_phone_num = count($user_status);
$before_last = $total_phone_num - 1;

$valid_phone_num = "'";

foreach ( $user_status as $valid_phone){
 
if ($i <= $before_last){
$valid_phone_num = $valid_phone_num."+234".$valid_phone.",";
}else{

$valid_phone_num = $valid_phone_num."+234".$valid_phone."'";
}
$i = $i + 1;
}

echo $valid_phone_num;

我终于找到了答案

输出'[phone],[phone],[phone]'