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PHP Tutorials - Performing Key Word Search

By: FYICenter.com

(Continued from previous topic...)

How To Perform Key Word Search in Tables?

The simplest way to perform key word search is to use the SELECT statement with a LIKE operator in the WHERE clause. The LIKE operator allows you to match a text field with a keyword pattern specified as '%keyword%', where (%) represents any number of any characters. Any single quote (') in the keyword needs to be protected by replacing them with two single quotes (''). The tutorial exercise below shows you how to search for records whose "notes" contains "e":

<?php
  include "mysql_connection.php";

  $key = "e";
  $key = str_replace("'", "''", $key);
  $sql = "SELECT id, url, notes FROM fyi_links"
    . " WHERE notes LIKE '%".$key."%'";
  $rs = mysql_query($sql, $con);
  while ($row = mysql_fetch_assoc($rs)) {
    print($row['id'].", ".$row['url'].", ".$row['notes']."\n");
  }
  mysql_free_result($rs);

  mysql_close($con); 
?>

If you run this script, you will get something like this:

102, dba.fyicenter.com, Nice site.
301, www.netscape.com, Added long time ago!
302, www.myspace.com, Added today!
202, www.yahoo.com, It's another search engine!

(Continued on next topic...)

1. How To Install MySQL Server?
2. How To Use MySQL Command Line Interface?
3. What Do You Need to Connect PHP to MySQL?
4. How To Connect to MySQL from a PHP Script?
5. How To Create a Database?
6. How To Select an Exiting Database?
7. How To Run a SQL Statement?
8. How To Create a Table?
9. How To Get the Number of Rows Selected or Affected by a SQL Statement?
10. How To Insert Data into a Table?
11. How To Insert Rows Based on SELECT Statements?
12. What Is a Result Set Object?
13. How To Query Tables and Loop through the Returning Rows?
14. How To Update Existing Rows in a Table?
15. How To Delete Existing Rows in a Table?
16. How To Quote Text Values in SQL Statements?
17. How To Quote Date and Time Values in SQL Statements?
18. How To Perform Key Word Search in Tables?
19. How To Query Multiple Tables Jointly?
20. How To Set the ID Column as Auto-Incremented?
21. How To Get the Last ID Assigned by MySQL?