Reading PHP file names

[DanH87]

Hi,

I am currently having a bit of a problem in work with a PHP code. Here is my code:

<?php
 
$nrandom1 = rand(1,3);
$image_name1 = "image01.jpg";
 
if ($nrandom1 == 2) {
$image_name1 = "image01.jpg";
}
if ($nrandom1 == 3) {
$image_name1 = "image02.jpg";
}
 
$nrandom2 = rand(1,3);
$image_name2 = "image03.jpg";
 
if ($nrandom2 == 2) {
$image_name2 = "image03.jpg";
}
if ($nrandom2 == 3) {
$image_name2 = "image04.jpg";
}
 
$nrandom3 = rand(1,3);
$image_name3 = "image05.jpg";
 
if ($nrandom3 == 2) {
$image_name3 = "image05.jpg";
}
if ($nrandom3 == 3) {
$image_name3 = "image06.jpg";
}
 
$nrandom4 = rand(1,3);
$image_name4 = "image07.jpg";
 
if ($nrandom4 == 2) {
$image_name4 = "image07.jpg";
}
if ($nrandom4 == 3) {
$image_name4 = "image08.jpg";
}
 
$nrandom5 = rand(1,3);
$image_name5 = "image09.jpg";
 
if ($nrandom5 == 2) {
$image_name5 = "image09.jpg";
}
if ($nrandom5 == 3) {
$image_name5 = "image10.jpg";
}
 
$nrandom6 = rand(1,3);
$image_name6 = "image11.jpg";
 
if ($nrandom6 == 2) {
$image_name6 = "image11.jpg";
}
if ($nrandom6 == 3) {
$image_name6 = "image12.jpg";
}
 
$nrandom7 = rand(1,3);
$image_name7 = "image13.jpg";
 
if ($nrandom7 == 2) {
$image_name7 = "image13.jpg";
}
if ($nrandom7 == 3) {
$image_name7 = "image14.jpg";
}
 
$nrandom8 = rand(1,3);
$image_name8 = "image15.jpg";
 
if ($nrandom8 == 2) {
$image_name8 = "image15.jpg";
}
 
if ($nrandom8 == 3) {
$image_name8 = "image16.jpg";
}
 
if ...
{
    echo "<img src=\"logo.bmp\" border=\"1\" /><img src=\"$image_name5\" border=\"1\" /><img src=\"$image_name6\" border=\"1\" /><img src=\"$image_name7\" border=\"1\" /><img src=\"$image_name8\" border=\"1\" />";
}
else
{
    echo "<img src=\"logo.bmp\" border=\"1\" /><img src=\"$image_name1\" border=\"1\" /><img src=\"$image_name2\" border=\"1\" /><img src=\"$image_name3\" border=\"1\" /><img src=\"$image_name4\" border=\"1\" />";
}
 
 
?>

This code is incomplete because I need to insert some sort of variable at the top and also complete the if statement on line 84. At first, I had four images on a banner, each of which were picked by a random generator. Each generator has a choice of two images to pick for that particular space.

However, I have since created more random generators ($nrandom5 - $nrandom8). These work in exactly the same way as the first four did, but what I want to do is to be able to load images from $nrandom5 to $nrandom8 on one page, but images from $nrandom1 to $nrandom4 on the other pages.

Basically, I think I need my code to say "if (name of php file), display $image_name5 to $image_name8, else display $image_name1 to $image_name4". My problem is I am not sure how to get PHP to recognise the names of other PHP files. It is probably a simple function but I am relatively inexperienced in PHP and so any help would be appreciated.

[Atli]

You say this code is beeing used in several pages. How is it beeing called?
Is it beeing included?
You can use the __LINE__ constant to get the fill path of the file beeing executed.
Using basename(__LINE__) will get you the file name.

You could try something like:

function print_random_images($imgStartIndex, $numImages) {
  for($x = 0, $y = $imgStartIndex; $x < $numImages; $x++, $y += 2)
  {
    echo "<img src='image". ($y + mt_rand(0, 1)) .".jpeg' />\n";
  }
}
 

I use the for loop there to get rid of all the if statements you use.

Then, if you put this function into a file and include it into the files you want you images show on, you can use it like so:

# From the first file
include("my_image_function.php");
print_random_images(1, 4);
 
# Fromt any other file
include("my_image_function.php");
print_random_images(9, 4);