MySQL查询在PHP中默默失败

Question

This is my PHP code written for website. When I executed this, the query doesn't execute and doesn't show any error. I also checked data types of values that are to be inserted. The database username and password and all credentials are correct. What could be the problem?

   <?php 
    $password ='abcdef';



      $host="localhost"; // Host name 
      $username="futureti_dsatya"; // Mysql username 
      $password="D2e3e4v1i"; // Mysql password 
      $db_name="futureti_db"; // Database name 
      $tbl_name="users"; // Table name 

     // Connect to server and select databse.
     $con = mysqli_connect($host, $username, $password,$db_name); 
     if(!$con)
     {
      die('Could not connect: '. mysql_error());
     }

    else
    {
     $res = mysqli_query($con,"insert into users values(55555623,'saran1','satya_saran',$password)");


    if($res){
       print("i am ok");
    }
    else{
    print("bad");
    }
    }

    ?>

Answer 1

you dont get any error because you are making using mysql. not mysqli.

your code is wroking just wrap password . i guess the connection is not connecting.

replace this:

    die('Could not connect: '. mysql_error());

to

    die('Could not connect: '. mysqli_error());  //to see the error

Answer 2

Wrap $pass in quotes (55555623,'saran1','satya_saran','$pass') as shown below with an explanation about " $password ", and change mysql_error()); to mysqli_error()); those two functions don't mix and that is why you did not get the proper error messages to show up.

As already stated, you're using $password twice; change one of the variables to something else.

What you're presently doing is overwriting your $password variable.

I am assuming you want to enter abcdef into your DB. If so, then do this instead:

<?php 
   $pass ='abcdef';
   $host = "localhost"; // Host name 
   $username = "futureti_dsatya"; // Mysql username 
   $password = "D2e3e4v1i"; // Mysql password 
   $db_name = "futureti_db"; // Database name 
   $tbl_name = "users"; // Table name 

   // Connect to server and select databse.
   $con = mysqli_connect($host, $username, $password,$db_name); 

  if ( !$con ) {
       die('Could not connect: '. mysqli_error());

  } else {

      $res = mysqli_query($con, "insert into users values (55555623,'saran1','satya_saran','$pass' )");
      if( $res ) {
         print("i am ok");
      } else {
         print("bad");
      }
  }
?>

Also, inserting data into a table without telling it which columns to use is not a recommended method.

Use something to the effect of:

($con, "insert into users (column1, column2, column3, column4) values (55555623,'saran1','satya_saran','$pass' )

Sidenote: If the column for your first value isn't an (int) you will need to wrap that in quotes as well.

Also, if your first column is an AUTO_INCREMENT , you will need to remove the AUTO_INCREMENT from the column's type.