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MySQL connect on PHP

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情书的邮戳
情书的邮戳 2021-01-23 19:57

what is the best way to connect PHP application on MySQL.

So far I had the below connection classes.

class Connection{
    private static $server = \"127
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4条回答
  • 情书的邮戳
    2021-01-23 20:17

    try this

    <?php

  $user = $_POST["username"];//if this doesnt work try the next line
  $user = (isset($_POST["username"]) ? $_POST["username"] : "");

  $host = "localhost";//mysql password
  $username = "";//mysql username
  $password = "";//mysql password
  $db_name = "database";//database name
  $tbl_name ="test";//table name
  //make the connection
  $con = mysql_connect("$host","username","password")or die("Could not connect.");
  $conn = mysql_select_db("$db_name")or die("Could not select database.");

  $sql = "SELECT * FROM $tbl_name WHERE username='$username'";
  //query mysql
  $result = mysql_query($sql);

  if($result){
  //if it works show this

  }else{

  //if it doesnt work show this

  }

?>

    ive tryed a lot of times to make a connection to a database and i finaly found one.

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  • 盖世英雄少女心
    2021-01-23 20:22

    You can try using the PDO object:

    <?php
try {
    $dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass);

} catch (PDOException $e) {
    print "Error!: " . $e->getMessage() . "<br/>";
    die();
}
?>

    Have a look at PHP PDO documentation page

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  • 半阙折子戏
    2021-01-23 20:26

    Try to use php frameworks like codeigniter, Yii, cake php. If you implement in any one of this framework no need to write php mysql query It will automatically generate. You just need to enter your database configuration like give in below

    $db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'sample';
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  • 再見小時候
    2021-01-23 20:37

    You can connect through data using PDO, here is an example

    <?php
$servername = "localhost";
$username = "root";
$password = "nopass";

try {
    $conn = new PDO("mysql:host=$servername;dbname=wireframe", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully"; 

    $stmt = $conn->prepare("SELECT * FROM todolist"); 
    $stmt->execute();

    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }
?>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>

<table border="1" align="center">
<tr>
  <th>name</th>
  <th>type</th>
  <th>status</th>
</tr>




<?php

foreach($stmt->fetchAll() as $k=>$v){
     echo
   "<tr>
    <td>{$v['name']}</td>
    <td>{$v['type']}</td>
    <td>{$v['status']}</td>
   </tr>\n";

}


?>
</table>
</body>
</html>
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