在一行中获取 PHP 字符串的"first"和"last"字符？

Question

是否有一行方法来组合字符串的第一个和最后一个字符?

I tried (without success):

$title = "IncredibleTitle";
$title_characters = (mb_substr($title, 0, 1, 'UTF8')) && (mb_substr($title, 0, -1, 'UTF8'));

Answer 1

• 使用.句点字符进行连接
• 要获得最后一个字符，第二个参数必须为-1，第三个参数将为值1或长度。参见mb_substr

片段:

<?php
$title = "IncredibleTitle";
$title_characters = (mb_substr($title, 0, 1, 'UTF8')) . (mb_substr($title, -1, 1, 'UTF8'));
echo $title_characters;

<<p>在线演示/strong>