尝试使用php中的error_log函数通过电子邮件发送错误

function CustomErr($cusno,$cuserr)
    {
        echo "<b>Error : </b>". "[$cusno] ".$cuserr;
        error_log("<b>Error : </b>[$cusno] $cuserr",1,"someone@gmail.com");
        echo "User notified by email";
        die();
    }

Actually i'm not getting any error , but after execution of these function i'm trying to read error message via email(in Destination parameter) but no such message is received