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<style>
body {
  font-size: .9em; font-weight: bold;
}
a { color: blue; line-height: 1.5em; }
a[href$=".html"] {
   padding-left:20px; background-image:url(html.gif);
   background-repeat: no-repeat;
}
a[href$=".pdf"] {
   padding-left:20px; background-image:url(pdf.gif);
   background-repeat: no-repeat;
}
a[href$=".doc"] {
   padding-left:20px; background-image:url(msword.gif);
   background-repeat: no-repeat;
}
</style>

<ul>
<li><a href="myfile.html">My HTML File</a></li>
<li><a href="myfile.pdf">My PDF File</a></li>
<li><a href="myfile.doc">My Word Doc File</a></li>
<li><a href="http://php-princess.net">Any Link</a></li>
</ul>

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Popularity: 25% [?]

Removing last character of a string

I had a string that looked like:

2;4;6;7;

The string is dynamic, so it could also be:

3;5;2;8;9;

I needed to remove the last ; (semicolon) from the string but wasn’t sure what the best method of doing this was. I thought about using the strlen() (string length) function. Get the value of how long the string is, and then removed the last character using substr(). The task seems a bit tedious and unefficient though.

So I searched Google to find the best method, and stumbled upon the answer to my question — How do you remove the last character of a string?

The solution is to use:
$outgoing = substr_replace($incoming,"",-1);

So if I use:
$outgoing = substr_replace('3;5;2;8;9;',"",-1);

My output would be:
3;5;2;8;9

Exactly what I was looking for! Thank you Graham Ellis!

Popularity: 23% [?]

Animation using CSS

I was reading this article called “CSS Sprites: Image Slicing’s Kiss of Death” which shows how we can animate images, using only CSS and no javascript. I decided to try it out for myself, and played with the code for a bit. I came up with this this example using an image. The amazing thing part is that only one image was used. The coding for this trick is very condensed and much shorter than a javascript. One advantage this has over using javascript is that it is much faster. There’s no delay with multiple image swapping. Instead, css displays a different part of one image.

Read more about this CSS trick and see if you can give your webpage a little more life. :)

Popularity: 20% [?]

Easter Date

Are you wondering what day Easter falls on this year? Not to worry, a simple PHP script can figure it out faster than you flipping a calendar. heh Ok, maybe not, but it’s still a neat trick. :)

Just put this code in a php file, uploaded and see for yourself.
< ? echo date ("M-d-Y", easter_date(2004)); ?>

More information here.

Popularity: 19% [?]

RAND() function in MySql

I was trying to use this query to get a random row from the database:

$myRandom = "SELECT * FROM MYTABLE ORDER BY RAND() LIMIT 1";

and I couldn’t figure out why it would continually get the previous number instead of some random number.

Ahh, but look what’s at the bottom of the page. ;)

“As of MySQL 3.23.52, MySQL changed the way RAND() functions, such that you MUST supply a SEED to get an actual random number. If you do not, each new connection will return close to the same number as the previous new connection. An example to test this would be to run the follow command multiple times in a row. mysql -u username -p -e’select rand()’ A basic way to seed this would be to run RAND(NOW()).”

So now I know, I must provide a random seed. ;)

Source: http://www.mysql.com

Popularity: 19% [?]

ipb Users Online Code Block

I wrote a small ipb (Invision Power Board) code block last nite that I wanted to share. It’s really simple, but useful script. :)

If you look on the left side of http://php-princess.net , you will see a small “user online” block. It grabs the current users online on the ipb board and put it in that little table.

You can see another sample of the script here. And if you like it, you can download it here.

Popularity: 24% [?]

Getting Rid of MS Smart Quotes

Ever have that problem with displaying Smart Quotes in the browser? Well, here is how I solved the little bug.

This problem has been bugging me for a while. See the image:

The problem is in the red circle. See how there’s junk around “Meet the Author?” Well, I was researching on the problem and it’s because the user copied and pasted from a Word Document. Microsoft adds these “Smart Quotes” to your documents which are just fancy close and open quotes. These replaces the straight quotes ( ” ) when the user enters the data.

Read more

Popularity: 21% [?]

Stacking Functions

ucwords(eregi_replace(‘font’, ‘ font’, profileFont($the_lastlogin->fontsize)))

Oh my, this is an example of my coding now. I tend to throw a lot of functions at my variables. hehe

What exactly does this do in my program? Well, $the_lastlogin->fontsize is the variable I got my my query. The profileFont() function is a something I wrote that returns the font name according to the id I pass it. The eregi_replace() is there to display the font name as …”small font” rather than “smallfont.” And the ucwords() function capitalizes the first letter of each word, so the result would be “Small Font” rather than “small font.” Whew. All that in ONE line. :)

Popularity: 19% [?]

Add link to favorites

Javascript code snippet for a link to add to favorites. ;)

<script>
<!–
{
var favoriteurl=”http://php-princess.net”
var favoritetitle=”PHP Princess”
document.write(“<a href=’javascript:window.external.AddFavorite(favoriteurl, favoritetitle);’>Add to Favorites!</a>”);
}
//–>
</script>

Popularity: 22% [?]

Function: number_format( )

Here’s a nice function I learned, number_format().

I was looking for a way to add in the commas for the cost of an item since they were exceeding $1,000. The number $100000.00 is hard to read as opposed to $100,000.00. I thought some parsing would be involved, but I should have know that PHP would already have a function for this. ;)

Here’s a code snippet:
<?php

$value = 100000.00;
echo ‘The cost is $’ . number_format($value, 2) . ‘.’;

?>

Having a ’2′ in the parameters tells the function to return 2 decimal spaces. :) Simple huh? The function comes in handy if you ever have to print out the cost of items in a project.

Popularity: 19% [?]

Output Control Functions

I just learned what Output Control Functions are the other day, while reading about eval(). Here’s a small piece of my knowledge. :)

Popularity: 19% [?]

Regular Expression Library

I’ve always had trouble with regular expressions. Then Al gave me this great link to the regular expressions library. :)

Popularity: 20% [?]

phpCountdown

2 days til my bday… 7 days til graduation… do you think you need a countdown script? Why not try this phpCountdown script. :)

Popularity: 20% [?]

Date using mySQL

Ever wonder how to get the date using mysql? Well, here’s how. :)

Popularity: 19% [?]

PHP Tutorials

I had some time to write up a few tutorials. You may check them out here at the board. I’ll try to write a few everyday. :)

Popularity: 19% [?]

Random Splash Pages

I was looking through my email and found this email from Grace:

Hi Daynah! It’s me, Grace. I would like to ask a question if you don’t mind -_-; Sorry if I am bothering you. I would like to ask if how can I make random splash pages with php? Or do you know any scripts I could download for
that? Thank you so much. And hope you are having a great week =)

Here is a piece of code that Albert (my boyfriend) wrote. It creates an array of random images to use. It’s pretty simple to modify if you want to create random splash pages. If you have comments/questions, please leave them below.

<?php

// Function name: randomimage($showimage)
// Purpose: Create an array with random data for an image
// Use: Please link http://php-princess.net/
function randomimage($showimage)
{

    // ARRAY OF SPLASH IMAGES
    $bgimages = array('images/splash1.jpg','images/splash2.jpg',
                      'images/splash3.jpg','images/splash4.jpg',
                      'images/splash1.jpg','images/splash2.jpg',
                      'images/splash3.jpg','images/splash4.jpg');

    $bgtext = array ('Picture of Splash 1','Picture of Splash 2',
                     'Picture of Splash 3','Picture of Splash 4',
                     'Picture of Splash 1', 'Picture of Splash 2',
                     'Picture of Splash 3', 'Picture of Splash 4');

    $bgmax = count($bgimages)-1;

    // Check if viewing additional image option is
    // set / look for non-integer value passing
    if ((!isset($showimage)) || (!ereg ("^[0-9]{1,2}$", $showimage)))
    {
        srand((double)microtime()*1000000);
        print_r($names);  

        srand ((double) microtime() * 10000000);

        $rand_keys = array_rand ($bgimages, 2);

        // obtain random image from array
        $bgimage = $bgimages[$rand_keys[0]];
        $bgalt   = $bgtext[$rand_keys[0]];
        $bgkey   = $rand_keys[0];
    }    

    return array($bgimage,$bgalt,$bgkey);
}

// Creates a list of the variables with random image
list($bgimage,$bgalt,$bgkey) = randomimage($showimage);

// Put printout into variable $mainbody
$mainbody = '';

// Print out $mainbody
print "$mainbody";

?>

Popularity: 19% [?]

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