06 Php Mysql Connect Query
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The document discusses PHP and MySQL functions for connecting to a database, executing queries, and retrieving results. It provides code samples for connecting to MySQL, selecting a database, inserting user form data into a database table, and reading users from the database table. It also discusses upgrading a login system to authenticate users by selecting the user from the database and comparing the password.
![Insert the User form field values to tbl_users Assumed the form has been submitted with action insert_user_process and method post. db_conn.php <?php $db['host'] = "localhost"; $db['user_name'] = "root"; $db['pass_word'] = ""; $db['name'] = "php_class_db"; $connection = mysql_connect ($db['host'], $db['user_name'],$db['pass_word']); if(!$connection){ die("Error connecting to the database server"); } $db_name = mysql_select_db($db['name'], $connection); ?>](https://image.slidesharecdn.com/06phpmysqlconnectquery-090627075508-phpapp02/85/06-Php-Mysql-Connect-Query-5-320.jpg)
![The easy STATIC insert “ INSERT INTO tbl_user_test ( user_login, pass_word, address, email, gender, heard_from, newsletter, created_on, modified_on ) VALUES ('".$fdata['user_login']."', '".$fdata['pass_word']."', '".$fdata['address']."', '".$fdata['email']."', '".$fdata['gender']."', '".$fdata['heard_from']."', '".$fdata['newsletter']."', '".$fdata['created_on']."', '".$fdata['modified_on']."');”;](https://image.slidesharecdn.com/06phpmysqlconnectquery-090627075508-phpapp02/85/06-Php-Mysql-Connect-Query-7-320.jpg)
![Upgrade your Login System Create database with db desiger4 and export with use of PHPMyAdmin. Authenticate a user to the login system user select * from $tbl_name where user_login = $fdata[‘user_login’]; Then compare password if it matches login else do not login. if($row[‘pass_word’] == $fdata[‘pass_word’]){ Login } Maintain session very well.](https://image.slidesharecdn.com/06phpmysqlconnectquery-090627075508-phpapp02/85/06-Php-Mysql-Connect-Query-14-320.jpg)
06 Php Mysql Connect Query
- 1. PHP Day 06 Geshan Manandhar Developer, Young Innovations Private Limited www.geshanmanandhar.com http://www.php.net http://www.mysql.com
- 2. PHP – MYSQL Functions $resource_link = mysql_connect ( “server_name”, “user_name”, “password”); - Open a connection to a MySQL Server. mysql_select_db ( “data_base_name”, $resourece_link ); - Select a MySQL database mysql_query ( $query, $resourse_link); - Send a MySQL query to execute
- 3. PHP – MYSQL Functions mysql_fetch_row ( resource $result ); - Get a result row as an enumerated array. mysql_fetch_array ($result, RESULT_TYPE); - Fetch a result row as an associative array, a numeric array, or both. mysql_num_rows ( resource $result ); - Get number of rows in result.
- 4. PHP – MYSQL Functions mysql_affected_rows (); - Get number of affected rows in previous MySQL operation. mysql_error ( $resource_link ); - Returns the text of the error message from previous MySQL operation. mysql_close ( $resource_link ); - Close MySQL connection.
- 5. Insert the User form field values to tbl_users Assumed the form has been submitted with action insert_user_process and method post. db_conn.php <?php $db['host'] = "localhost"; $db['user_name'] = "root"; $db['pass_word'] = ""; $db['name'] = "php_class_db"; $connection = mysql_connect ($db['host'], $db['user_name'],$db['pass_word']); if(!$connection){ die("Error connecting to the database server"); } $db_name = mysql_select_db($db['name'], $connection); ?>
- 7. The easy STATIC insert “ INSERT INTO tbl_user_test ( user_login, pass_word, address, email, gender, heard_from, newsletter, created_on, modified_on ) VALUES ('".$fdata['user_login']."', '".$fdata['pass_word']."', '".$fdata['address']."', '".$fdata['email']."', '".$fdata['gender']."', '".$fdata['heard_from']."', '".$fdata['newsletter']."', '".$fdata['created_on']."', '".$fdata['modified_on']."');”;
- 8. Insert user function function insert_user_to_db($fdata){ global $connection; $tbl_name ="tbl_user_test"; //INSERT INTO tbl_name (col1,col2) VALUES(15,col1*2); $query = "INSERT into $tbl_name ("; foreach($fdata as $key => $value){ if($key == "modified_on"){ $query .= $key.")"; } else{ $query .= $key.", "; } }//could have done it with array_keys($fdata); … Continued
- 9. Insert user Function $query .= " VALUES ("; foreach($fdata as $key => $value){ if($key == "modified_on"){ $query .= "'$value'".");"; } else{ $query .= "'$value'".", "; } } $result = mysql_query($query, $connection); if (!$result) { return 0; } else { return 1; } } Full code at: day06\insert_user_process.php
- 10. Read some users from database
- 11. Function show users Code at day06\show_users.php
- 12. Output of show users
- 13. Questions
- 14. Upgrade your Login System Create database with db desiger4 and export with use of PHPMyAdmin. Authenticate a user to the login system user select * from $tbl_name where user_login = $fdata[‘user_login’]; Then compare password if it matches login else do not login. if($row[‘pass_word’] == $fdata[‘pass_word’]){ Login } Maintain session very well.