19 Reusable Code Snippet Topics
Remove Filter  | |
 | Sometimes you need to delete duplicate rows in a database :) In the future, set UNIQUE keys when you need them :) In the example below, we have a table appropriately named `TABLE_NAME` and there are multiple rows that have the same value for the `duplicate_field` field. In this example, … |
| | I recently had to mass insert a really large text file of strings into MySQL. Here's how I did it.  |
| | Export CSV TO Mysql and Import to CSV from MYsql in PHP |
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| | first create the table [CODE] create table images ( image_id serial, filename varchar(255) not null, mime_type varchar(255) not null, file_size int not null, file_data longblob not null, primary key (image_id), index (filename) ); [/CODE] the file to output the images to the browser [B]picsrc.php[/B] [CODE]<?PHP //detect if image is called … |
| | Here is a simple way to insert into a database that isn't much harder than using string concatenation - which we all know is very dangerous due to SQL injection attacks. Put the code snippet into `database.php`. Now, in a script handling a form post, such as `post_reply.php`: <?php require_once("database.php"); … |
 | Raffle function to generate unique numbers for each player, related to the same table with a recursive aproach. I had to do a simple raffle system for a contest that I was working on and tried many things and the most simple and the most effective one to generate unique … |
 | A while ago I explained how you could tag articles (see [this thread](http://www.daniweb.com/web-development/php/threads/387961/php-code-to-show-related-posts-on-a-blog)). Now you get a full working example. This code and the SQL script is also available on GitHub. The attached MySQL dump needs to be imported into your database, and you must update the credentials in the … |
| | The following snippet shows how you can use binding in your queries when using MySQLi. For starters, here's the table structure I've used: CREATE TABLE `mytable` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(255) DEFAULT NULL, `email` varchar(255) DEFAULT NULL, `dob` date DEFAULT NULL, `level` int(11) DEFAULT NULL, PRIMARY … |
| | Hi, - Why use paging? It's not really cool to print out all 2000 rows you have in a table to the page, so it'd be nice to page them. Special cases? Yeah, if you have 1000 rows.. and you've set the maximum row per page to 20, well.. you're … |
| | Below is a documented code example showing how to use the [MySQLi](http://php.net/manual/en/book.mysqli.php) (MySQL improved) classes/objects to connect and query your database (and check for errors). If there are any questions, or you want to see different features, let me know. |
| | Below is a documented code example showing how to use the [MySQL functions](http://php.net/manual/en/book.mysql.php) to connect and query your database (and check for errors). Please note that using the MySQL extension is **NOT RECOMMENDED**. This extension is no longer maintained and will be deprecated soon. If you want your scripts to … |
 | I found an old thread that had never been answered here - [url]http://www.daniweb.com/software-development/vbnet/threads/330981[/url] Basically, the guy was asking how to retrieve database names and/or table names from a MySql database with vb.net. Here's my answer to that. Yes, I still use vb6 because vb.net is not much better and I … |
 | I have prepared an example of login page which displays a form with inputs for username and password and compares submited values with records in database. If match is found the user is redirected to another page, if not error message is displayed. This example is heavy commented. Hope it … |
| | View the full tutorial at [URL="http://www.effectivewebdesign.co.nz/tutorial.php"]http://www.effectivewebdesign.co.nz/tutorial.php[/URL] I have tested this many times and it works fine. Please don't complain unless you really can't get it working, Just PM me and I'll fill in the blanks Happy Coding :) |
| | [CODE]<?php /* +-----------------+------------------------------------------------------------+ | Class | setup | | Author | Brian Onang'o | | Version | 1.0 | | Last Modified | 10:16 AM 10/2/2010 GMT+3 | +-----------------+------------------------------------------------------------+ | This program is free software; you can redistribute it and/or | | modify it under the terms of the GNU … |
 | A very simple MySQL database class. [B]Usage:[/B] [CODE]// connect $config = array( 'host' => $host, 'user' => $user, 'password' => $password, 'database' => $database); $DB = Database_MySQL::getInstance($config); // set query $DB->query("select * from table1 where col1 = %d and col2 = '%s' LIMIT 1", 5, 'a'); // get rows $rows … |
| | To view this tutorial with notes at [URL="http://www.effectivewebdesign.co.nz/tutorial.php"]http://www.effectivewebdesign.co.nz/tutorial.php[/URL] yes I am aware this is more php than mysql. howerver I get asked how to do it so often I thought I'd post it here aswell :) |
| | Ever had to fix auto-generated dates retrieved from MySql databases? I made a really quick fix that displays the date in "human readable" format. Just replace "CST" with GMT, or EST etc... Whatever time zone your mysql server is located. it takes one argument, the date from the database. [B]Usage:[/B] … |
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