擅长:python、mysql、java
<p>我不尝试这种代码,但我认为它应该有效:</p>
<pre><code>$string = "hello";
$output = "";
$arr = array_reverse(str_split($string)); // Transform "" to [] and then reverse => ["o","l","l,"e","h"]
foreach($arr as $char) {
$output .= $char;
}
echo $output;
</code></pre>
<p>另一种方式:</p>
^{pr2}$