User Tools

Site Tools


howto_extract_data_from_db_in_php

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

howto_extract_data_from_db_in_php [2012/03/09 10:43] (current)
Line 1: Line 1:
 +Creating a simple PHP SQL database extractor.
  
 +Example: Fetching data from X.X.X.X is the ip address of the db server.
 +
 +<code>
 +
 +HTML
 +
 +BODY
 +
 +<?php
 +$con = mysql_connect("X.X.X.X","username","password");
 +if (!$con)
 +  {
 +  die('Could not connect: ' . mysql_error());
 +  }
 +
 +mysql_select_db("databasenname", $con);
 +
 +$result = mysql_query("SELECT table_name,ordinal_position,column_name,data_type,  is_nullable,character_maximum_length FROM
 +information_schema.COLUMNS WHERE table_name LIKE '%TABLENAME%' ORDER BY ordinal_position");
 +
 +while($row = mysql_fetch_array($result))
 +  {
 +  echo $result['Here are you results'];
 +  echo "<br />";
 +  }
 +
 +mysql_close($con);
 +?>
 +
 +</code>
 +
 +END BODY
 +
 +http://w3schools.com/php/php_mysql_connect.asp
 +
 +<code>
 +If you do not know tables you can have the db describe them using the following command:
 +
 +Definition: The describe SQL command is used to list all of the fields in a table and the data format of each field. 
 +
 +It is phrased as: describe [TableName];
 +
 +Examples: This would list all of the fields and their formats for the table called 'Colors':
 +
 +describe Colors;
 +
 +DESCRIBE ;
 +
 +or
 +
 +SELECT column_name,column_type,is_nullable,column_key,col  umn_default,extra FROM information_schema.COLUMNS WHERE
 +table_schema='' AND table_name=''
 +
 +
 +SELECT table_name,ordinal_position,column_name,data_type,  is_nullable,character_maximum_length FROM
 +information_schema.COLUMNS WHERE table_name LIKE '%TABLENAME%'
 +ORDER BY ordinal_position
 +
 +</code>
 +
 +
 +
 +
 +<HTML>
 +
 +<!-- AddThis Button BEGIN -->
 +<a class="addthis_button" href="http://addthis.com/bookmark.php?v=250&amp;username=xa-4beeaaab61b514bf"><img src="http://s7.addthis.com/static/btn/v2/lg-share-en.gif" width="125" height="16" alt="Bookmark and Share" style="border:0"/></a><script type="text/javascript" src="http://s7.addthis.com/js/250/addthis_widget.js#username=xa-4beeaaab61b514bf"></script>
 +<!-- AddThis Button END -->
 +<br>
 +<br>
 +</HTML>
 +
 +Share this knowledge with your friends!
howto_extract_data_from_db_in_php.txt ยท Last modified: 2012/03/09 10:43 (external edit)