PHP错误:Mysqli_real_escape_string()恰好需要2个参数，给定1个

问题描述：

if (phpversion() >= '4.3.0'){
    $string = mysqli_real_escape_string($string);
}else{
    $string = mysqli_escape_string($string);
}

mysqli_real_escape_string的所有文档似乎都表明这是一段有效的代码-不明白吗?

All the documentation for mysqli_real_escape_string seems to indicate this is a valid bit of code - don't understand?

答

The first one is a link for a mysqli instance, the second one is the string to escape.