php 汉字字符串转为数组[]

汉字字符串转换为数组

 代码：

$topictitle="沙漠骆驼";
$length = mb_strlen($topictitle, 'utf-8');
$titlearray = [];
for ($i=0; $i<$length; $i++)  
{
	$titlearray[] = mb_substr($topictitle, $i, 1, 'utf-8');    
}

return $titlearray;

效果：