What code does form php MySQL implement authentication?

The following articles mainly use the actual application code to introduce the actual authentication operations of form php MySQL. We often use form php MySQL in actual operations, the following articles describe how to perform identity authentication.

 
 

  
  
<?php 
  
  
$uname=$_POST["username"];  
  
  
$pwd=$_POST["password"];  
  
  
$link = MySQL_connect('localhost', 'root', '123456')  
  
  
or die('Could not connect: ' . MySQL_error());  
  
  
MySQL_select_db('ruida') or die('Could not select database'); 
 
 

Execute SQL query

 
 

  
  
$query = 'SELECT * FROM user';  
  
  
$result = MySQL_query($query) or die('Query failed: ' . MySQL_error());  
  
  
while($row=MySQL_fetch_array($result)){  
  
  
if($uname==$row['username'] && $pwd==$row['password'])  
  
  
{ 
 
 

Page Jump

 
 

  
  
}  
  
  
else  
  
  
echo 'error!';} 
 
 

Release result set

 
 

  
  
MySQL_free_result($result); 
 
 

Close connection

 
 

  
  
MySQL_close($link);  
  
  
?>  
 
 

The above content describes how to implement authentication for form php MySQL.