将数组值转换为以逗号分隔的字符串，数字替换为'？'(Convert array values to a comma

将数组值转换为以逗号分隔的字符串，数字替换为'？'(Convert array values to a comma-delimited string, with numbers replaced by '?')

我的阵列：

$numbers = array(1, 3, 5);

简单地说，我需要改变数字? 问号，用逗号分隔 。

// Output (array has 3 items): $string = '?, ?, ?';

My array:

$numbers = array(1, 3, 5);

Simply, I need to change numbers with ? question mark and separated with , comma.

// Output (array has 3 items): $string = '?, ?, ?';

最满意答案

您可以使用str_repeat和count的组合。 然后使用rtrim清理尾随逗号：

$numbers = array(1, 3, 5); $str = str_repeat('?, ', count($numbers)); $str = rtrim($str, ', '); echo $str; // output: ?, ?, ?

You can use a combination of str_repeat and count. Then use rtrim to clean up the trailing comma:

$numbers = array(1, 3, 5); $str = str_repeat('?, ', count($numbers)); $str = rtrim($str, ', '); echo $str; // output: ?, ?, ?