Php 如何在变量中生成所有数组值

我想在一个变量中生成所有数组值

示例：

我有一个头衔

$title = "my name is medo";
$words = explode(' ', $title);

结果是

$words['0'] = my
$words['1'] = name 
$words['2'] = is 
$words['3'] = medo

我想这样做

$allwords = "my,name,is,medo";

谢谢大家

您可以使用：

---

您还可以使用字符串函数来实现这一点，这对于您的案例来说要容易得多

$originalString = "my name is medo";
$finalString = str_replace(" ", ",", $originalString);

---

$allwords=内爆（“，”，$allwords）

那么您只想用逗号替换字符串中的每个空格？

$originalString = "my name is medo";
$finalString = str_replace(" ", ",", $originalString);