代码如下:
$username = "zongzi";
echo substr_replace($username,'**','1','2');
PHP中利用substr_replace将指定两位置之间的字符替换为*号
$username = "zongzi";
echo substr_replace($username,'**','1','2');
$username = "zongzi";
echo substr_replace($username,'**','1','2');
$username = "zongzi";
echo substr_replace($username,'**','1','2');