1. PHP/MySQL Tricks & Techniques
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

2. Charles Kaplan - Maximum Computer Systems, Inc.
Introduction
Charles Kaplan
Maximum Computer Systems, Inc.
Sr. Sales Executive
Sales and Support of IBM i Solutions for 30+ years with IBM, Barsa Consulting, and Maximum Computer Systems
Past President, Treasurer
Long Island System Users Group (iSeries)
Lecture Series – PHP & MySQL for RPG Programmers
Certifications
IBM Power – i Sales Specialist
IBM Power – i Technical Support
IBM Power – AIX & LINUX Sales Specialist
Vision Solutions – MIMIX Sales
Questions
x119, office
, cell
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

3. Charles Kaplan - Maximum Computer Systems, Inc.
Agenda
HTML Maps
Keyword Search
Opening up New Tab/Windows with Hyper Links
Image Re-Sizing
List Filtering – Populating Dropdowns with MySQL Queries
File Upload
Restrictive WebPage Access without Login’s
Blocking users from webpages
Alphabetic Navigation Bar
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

4. Charles Kaplan - Maximum Computer Systems, Inc.
HTML Maps
Display an image
<img src=“image.jpg” alt=‘Image Description’>
Hyperlink
<a href=“pgm.php” alt=‘Link Description’> object </a>
Hyperlink Image
<a href=“pgm.php”><img src=“image.jpg”></a>
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

5. Charles Kaplan - Maximum Computer Systems, Inc.
HTML Maps
<img src=“mapfilename.jpg” usemap=“mapname” ismap alt=“map description”>
<map name=“mapname”>
<area shape=“poly” coords=“1,1,1,10,10,10,10,1” href=“program.php?id=ny” alt=“New York”>
<area shape=“rect” coords=“1,10,10,10,20,10,20,1” href=“program.php?id=nj” alt=“New Jersey”>
</map>
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

6. Charles Kaplan - Maximum Computer Systems, Inc.
HTML Maps
Q: How do I find a map image?
A: Google Images
Q: How do I find map coordinates?
A: View Page Source
Q: How do I determine my own map coordinates?
A: MS-PAINT
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

7. Keyword or Full Text Search
Search a text field for keywords
Define a FULLTEXT index off of target field,
(table type must be MyISAM)
SELECT fields FROM table WHERE MATCH(ft_index_field) AGAINST(‘keywords’ in BOOLEAN MODE)
Prefixes: “+” (AND), “-” (NOT), none (OR)
Suffix: “*” (WILDCARD)
Quoted Words: “word1 word2” – phrase
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

8. Opening Up New Tabs/Windows with Hyper Links
Open Link in New Window
<a href=“URL” target=“_blank”> object </a>
Good practice to open new window when linking to another website, otherwise users will be leaving your website
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

9. Charles Kaplan - Maximum Computer Systems, Inc.
Image Resizing
<img src=“imagefilename” width=“xxx” height=“yyy” alt=“description>
Browsers will stretch/shrink image into defined space distorting the image
$size = GETIMAGESIZE(imagefilename)
$width = $size[0]
$height = $size[1]
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

10. Charles Kaplan - Maximum Computer Systems, Inc.
Image Resizing Code
$max_width = 240; $max_height = 240;
$pix = “image.jpg”;
$size = getimagesize($pix);
$new_width = $size[0]; $new_height = $size[1];
$ratio = $new_width / $new_height;
if ($new_width > $max_width) {
$new_width = $max_width;
$new_height = round($new_width/$ratio); }
if ($new_height > $max_height) {
$new_height = $max_height;
$new_width = round($new_height * $ratio); }
echo “<img src=‘$pix’ width=‘$new_width’ height=‘$new_height’>”;
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

11. List Filtering - Populating Dropdowns w/MySQL Queries
MYSQL Query SELECT DISTINCT city FROM casinos WHERE (state=‘ca’) and (type=‘Card Room’) ORDER BY city
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

12. List Filtering - Populating Dropdowns w/MySQL Queries – PHP Code
$query = “SELECT DISTINCT city FROM casinos WHERE state=‘ca’ ORDER BY city”; $result = mysql_query($query); if ($result) { echo “<select name=‘city’>\n”; while(list($city) = mysql_fetch_row($result)) echo “<option>$city</option>\n”; echo “</select>”; }
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

13. Charles Kaplan - Maximum Computer Systems, Inc.
File Uploads
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

14. Blocking Access to a WebPage
Browsers provide “environmental” information each time they make a request, including the requesting TCP/IP address. If you can determine TCP/IP addresses of “unwanted” users (PING) you can block them. $_SERVER[‘REMOTE_ADDR’]
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

15. Blocking Access to a WebPage PHP Code Example
$remote_addr = $_SERVER[‘REMOTE_ADDR’]; switch ($remote_addr) { case “ ”: /* example */ case “ ”: /* local users */ case “ : $ban = 1; break; /* aol.com */ default: $ban = 0; } if ($ban) echo “You may not enter this website”; else { show webpage; }
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

16. Alphabetic Navigation Bar
Within a webpage, a good feature is to be able to provide links within the page. This helpful for long and/or complicated pages. An example would be a table of contents at the top of the page that users can click on to go directly to the desired section.
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.

17. Alphabetic Navigation Bar PHP Code Example
$query3 = "SELECT DISTINCT substring(casinoname, 1, 1) FROM casino WHERE " . $where . " ORDER BY casinoname"; $result3 = mysql_query($query3); $i = mysql_numrows($result3); $width = 20 * (1 + $i); echo "<table width='$width' align='center' border='1‘ rules='all‘ frame='border' bgcolor='silver‘> <tr> <td width='20' align='center'><a href='#0'>#</a></td>\n"; while (list($letter) = mysql_fetch_row($result3)) { $letter = strtoupper(substr($letter,0,1)); echo "<td width='20' align='center'> <a ref='#$letter'>$letter </a> </td>\n“; } echo "</tr></table><br>\n";
11/22/2018
Charles Kaplan - Maximum Computer Systems, Inc.