Pre mysql输出与Phpmyadmin中处理的Update不同

Question

$newInt = substr_replace($oldInt, $newDigit, $position, 1);
             $newValue = (string)$newInt;
            echo $newValue;

回显000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000    （我想要的！）

mysql_query("UPDATE table SET $fieldVariable = $newValue WHERE userID  = '".$_SESSION['userID']."' ")or die("Query failed:".mysql_error());

mysql记录显示 999999999999999999999999999999999999999999999999999

mysql字段设置为varchar（100）

Answer 1

在$ newValue周围添加引号，因为它是一个VARCHAR字段

mysql_query("UPDATE table SET $fieldVariable = '$newValue' WHERE userID  = '".$_SESSION['userID']."' ")or die("Query failed:".mysql_error());

Answer 2

将$ newValue换成单引号'{$ newvalue}'