Method for randomly obtaining Mysql Data

In the Mysql database, how can we obtain random Mysql Data in a table? The following describes how to obtain Mysql Data randomly.

 
 

  
  
header("Content-type:text/html;charset=utf-8");     
  
  
$mysql_host = 'localhost';     
  
  
$mysql_un = 'root';     
  
  
$mysql_pwd = '123456';     
  
  
$my_db_name = 'mytestdb';     
  
  
$my_table_name = 'mytesttable';     
  
  
$output_str = '';     
  
  
$resource = mysql_connect($mysql_host,$mysql_un,$mysql_pwd) or die('Mysql connect error!');     
  
  
mysql_select_db($my_db_name,$resource);      
  
  
$result = mysql_query("select id from $my_table_name",$resource) or die('select data error');     
  
  
$my_id_array = array();     
  
  
while($row = mysql_fetch_assoc($result)){     
  
  
    if(is_numeric($row['id'])){     
  
  
        $my_id_array[] = $row['id'];     
  
  
    }     
  
  
}     
  
  
mysql_free_result($result);     
  
  
if(count($my_id_array)>0){     
  
  
    $rand_query_id = array_rand($my_id_array,1);     
  
  
    $result = mysql_query("select * from $my_table_name where id = $rand_query_id",$resource) or die('select data error2');     
  
  
    $row = mysql_fetch_assoc($result);     
  
  
    $output_str = " 
   
 
    
 
     
 
      
{$row['foodname']}
 
      
{$row['price']}
 
      
{$row['tel']}
 
     
 
    
 
   
";     
  
  
    mysql_free_result($result);     
  
  
}else{     
  
  
    $output_str = 'Without any data';     
  
  
}     
  
  
mysql_close($resource);     
  
  
echo $output_str;     
  
  
?>   
 
 

The preceding describes how to obtain Mysql Data randomly.

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