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HomeBackend DevelopmentPHP Tutorialphp中mysql_query 返回值失误

php中mysql_query 返回值出错
  $conn=mysql_connect("localhost","root","root") or die("链接数据库失败");
  mysql_select_db("text");  
  $sql="SELECT * FROM mytext"; 
  $query=mysql_query($sql);
  if($query) //判断mysql_query是否成功返回
  {
  echo "true";
  $num=mysql_fetch_array($query);
  print_r($num);
  echo $num[1];
  }
  else
  echo "false";
?>
执行结:页面打印出 false

为什么$sql="SELECT * FROM mytext"这一句没有成功执行,数据库里的表都设有字段和值了??求大虾帮忙!!


------解决方案--------------------
$query=mysql_query($sql) or die(mysql_error());
这样报错了没有?

建议这样写规范点:
else{
echo "false";
}

------解决方案--------------------
数据库名是text?这是MySQL保留字哦,加反引号试试:

PHP code
mysql_select_db("`text`");<div class="clear">
                 
              
              
        
            </div>
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