没有选择数据库php / mysql

Question

i have a trouble with this T_T this is a searching/consult script for cars parts

this is the php

    <?php

if ($_POST['buscar'])
{
// Tomamos el valor ingresado
$buscar = $_POST['palabra'];

// Si está vacío, lo informamos, sino realizamos la búsqueda
if(empty($buscar))
{
echo "No se ha ingresado una cadena a buscar";
}else{

//Conexión a la base de datos
$servidor = "localhost"; //Nombre del servidor
$usuario = "root"; //Nombre de usuario en tu servidor
$password = "1234"; //Contraseña del usuario
$base = "db_maquinas"; //Nombre de la BD
$con = mysql_connect($servidor, $usuario, $password) or die("Error al conectarse al servidor");
$sql= mysql_query("SELECT * FROM repuestos WHERE 'id','descripcion' LIKE '%$buscar%' ORDER BY id", $con) or die(mysql_error($con)); 
mysql_select_db($base, $con) or die("Error al conectarse a la base de datos");

$result = mysql_query($sql, $con);

// Tomamos el total de los resultados
if($result) { $total = mysql_num_rows($result); } else { die('Invalid query' . mysql_error($con)); }


      echo "<table border = '1'> \n"; 
//Mostramos los nombres de las tablas 
echo "<tr> \n"; 

while ($field = mysql_fetch_field($result)){ 
            echo "<td>$field->name</td> \n"; 
} 
      echo "</tr> \n"; 

do { 
            echo "<tr> \n"; 

            echo "<td>".$row["id"]."</td> \n"; 

            echo "<td>".$row["descripcion"]."</td> \n"; 

            echo "<td>".$row["cantidad"]."</td> \n"; 

            echo "</tr> \n"; 

      } while ($row = mysql_fetch_array($result));

            echo "</table> \n"; 

echo "¡ No se ha encontrado ningún registro !"; 
} 
}
?> 

that when on the form i press "Send or Search" this send me to another page that says "NO DATABASE SELECTED"

I hope somebody can help me with that.. PD: i'm using a localhost DB with PhpMyAdmin i have items on tables, i verified tables not empty...

Answer 1

You select your database after you attempt to run queries. Place the code before you attempt to run queries:

mysql_select_db($base, $con) or die("Error al conectarse a la base de datos");
$sql= mysql_query("SELECT * FROM repuestos WHERE 'id','descripcion' LIKE '%$buscar%' ORDER BY id", $con) or die(mysql_error($con)); 

FYI, you shouldn't use mysql_* functions in new code . They are no longer maintained and are officially deprecated . See the red box ? Learn about prepared statements instead, and use PDO , or MySQLi - this article will help you decide which. If you choose PDO, here is a good tutorial .

Answer 2

将mysql_selectdb()放在mysql_query()之前。