Keithics Blog and Thoughts » PHP

Apache/PHP HTTP Authentication

admin — Tue, 18 May 2010 10:41:47 +0000

Aside from having a complex login page where you can prevent access to users without privileges , PHP offers a simple way to do it.

But you must have an Apache Server (most of the servers are Apache).

Here is the code:

if ($_SERVER[‘PHP_AUTH_USER’] != ‘admin’ and $_SERVER[‘PHP_AUTH_PW’] != ‘admin’) {
header(‘WWW-Authenticate: Basic realm="TCG Admin Panel"’);
header(‘HTTP/1.0 401 Unauthorized’);
echo ‘You need to login’;
exit;
} else {
echo "OK!";
}

Learn more about it here

DOMPDF Tips – HTML to PDF using PHP5

admin — Sun, 25 Apr 2010 15:54:00 +0000

1. Always ask to save the file , don’t load the PDF directly. I have printing problems when printing it directly without saving.

2. Add memory limit to php.ini

ini_set("memory_limit","128M");

3. Debug the output html first before converting to pdf.

4. Load images on the same server and with relative paths. You can’t load images using “http://domain.com”.

5. Use wordwrap with caution.

6. Always add width to your table and first row cells

7. Make sure images are in correct format with correct extension. A BMP file with .jpg extension will trigger an error.

8. Avoid special characters if possible.

If you some trouble with DOMPDF, just comment and maybe I can help you out.

All are based on experience!

Wordpress get_page() function

admin — Wed, 14 Jan 2009 23:15:25 +0000

Well this is the first time that I am having a hard time debugging this simple Wordpress get_page() function:

$p = get_page(2); // error : Only variables can be passed by reference

it has to be like this:

$n = 2;
$p = get_page($n);

Getting the title and content is easy..

_e($p->post_title)

_e($p->post_content)

I know it sucks but I hope it helps!

Opening Cake THTML file with Dreaweaver CS4

admin — Tue, 18 Nov 2008 07:31:23 +0000

Just go to:

C:\Program Files\Adobe\Adobe Dreamweaver CS4\configuration

Open file: Extensions.txt

edit line 16 and add THTML

Save and Close the File

Next, Open MMDocumentTypes.xml at C:\Program Files\Adobe\Adobe Dreamweaver CS4\configuration\DocumentTypes

Add THTML online 75 : winfileextension=”thtml,php,php3,php4,php5″ macfileextension=”thtml,php,php3,php4,php5″

Save, close and Restart Dreamweaver!

Get Articles from a specific cagetory in Wordpress

admin — Tue, 28 Oct 2008 15:03:59 +0000

After googling and not found any code, I made my own script to get articles from wordpress with a specific category.

Category = term_taxonomy_id // you can see it in the database table called wp_term_taxonomy

Here is the code:

[sourcecode language='php']

//////////////////////////////////////////////////////////////////////

$conn = mysql_connect(‘localhost’,'root’,”);
mysql_select_db(“keithics”,$conn) or die(mysql_error());

if (!$conn) {
die(‘Error!!–> ‘ . mysql_error()); // if there’s an error, e.g. wrong password or username.
}

$sql = “Select wp_posts.* ,wp_term_relationships.* from `wp_posts`,`wp_term_relationships` where wp_posts.post_status = ‘publish’ and wp_term_relationships.term_taxonomy_id = 7 and wp_posts.ID = wp_term_relationships.object_id order by rand() limit 5 “;

$result = mysql_query($sql) or die(mysql_error());
while($row = mysql_fetch_array($result))
{
echo ‘‘.$row['post_title'].’‘;
}

[/sourcecode]

Get Posts from Wordpress to an External Page

admin — Tue, 28 Oct 2008 13:38:33 +0000

Below will get the All articles from Wordpress Database to an external file and display in random order.Also, it depends on how you customized your “Permalink Structure”. Sample below has “/article/%postname%/%post_id%/”. I am using the same code on my footer!

[sourcecode language='php']

//////////////////////////////////////////////////////////////////////

$conn = mysql_connect(‘localhost’,'root’,”);
mysql_select_db(“keithics”,$conn) or die(mysql_error());

if (!$conn) {
die(‘Error!!–> ‘ . mysql_error()); // if there’s an error, e.g. wrong password or username.
}

$sql = “Select * from `wp_posts` where post_status = ‘publish’ order by rand() limit 5 “;

$result = mysql_query($sql) or die(mysql_error());

while($row = mysql_fetch_array($result))
{
echo ‘‘.$row['post_title'].’‘;
}

[/sourcecode]