相关疑难解决方法(0)

测试字符串:

$s = "convert this: ";
$s .= "–, —, †, ‡, •, ?, ?, ?, ?, ©, ® y ™, ?, ?, ?, ?, ?, ?, ™, ?, ?, ?, ?, ?, ? ";
$s .= "but, not convert ordinary characters to entities";