mysql - How to delete a password filed when sesstion time has reached 60sec in php -


i have developed login page otp generated every login of user .the following button action , have created "generate" button once clicked starts session timer , after 60 sec should delete varchar present in database.

php code button :

if(isset($_post['generate']))       {         session_start();          $_session['login_time'] > 60 ;          {           $sql = "delete password username = ajaisandy " ;          }

here "password" represent column name , once user enters "generate button" session starts , gives time period of 60 sec . user suppose receive otp via sms , should sign in within time if not password stored in db deleted , once again has perform sequence login.

use update instead of delete, missing if ($_session['login_time'] > 60)

if(isset($_post['generate'])) {     session_start();     if ($_session['login_time'] > 60)     {         $sql = "update table_name set password='' username = ajaisandy " ;         mysql_query($sql);     } }

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