Using function Explode. Need help

Topper

Hey guys.

I created a table with some simple text fields. But one of them is a field populated with a string sparated by comas (,)

Example: "img1.jpg,img2.jpg,img3.jpg"

My idea is to show each img in a different column in an html table.

So, I parse al the rest of the data ok but when I try to use the explode function Im getting nothing.


$screens = explode(",", $sql_table_field[6]);
for ($j=0; $j<$screens.length; $j++){
   $screen .= "<img src=\"http://localhost/images/reviews/$screens[$j]\" width=\"100\">";
   $t->set_var("SCREENS",$screen);
}

Of course im using some PHP Templates programming so in the html template there is a code {SCREENS} where the stuff should appear.

Well, I hope you can help me. This is driving me nuts.
Sorry for my english, i cant speak it as well as you because Im from Argentina.

Thx in advance.
Topper

Mordecai

Originally posted by Topper
for ($j=0; $j<$screens.length; $j++){
[/B]

Your error lies here. Rather than using $screens.length, use count($screens).

Also, you do not want to use the less than (<), you want to use less than or equal to (<=). You'll be missing the last entry this way.
Hope that helps.

xblue

I think lesser (<) than should be fine since arrays are indexed starting with 0, so the last element should be the number of elements minus 1.

Topper

Thanks all of you. I made the corrections you told me but now its showing only the first image of the array, and not the others.
Maybe there's something Im doing wrong while sending the results to the main template....hmmm....

Maybe I can also try using some while -> list statement?

xblue

which template system are you using? someone who uses the same might be able to help. maybe you should also post the relevant part of the template, could be helpful as well.

Topper

Originally posted by xblue
which template system are you using? someone who uses the same might be able to help. maybe you should also post the relevant part of the template, could be helpful as well.

Im using PHPLib templates. I dont have the rest of the code right now, because Im at work, but tonight Ill post some of it.

Thanks

Topper

Well. I think I know where Im going wrong.
I think that the problem is that Im overwritting the value of my var each time the loops has place (because its shows only de last img of the array). Is there a way to write, like in javascript, $var = $var + "new content"?

Here is the actual code:

            $screens = explode(",", $sql_field[6]);
	        for ($j=0; $j < count($screens); $j++){
                $screen = "<img src=\"http://localhost/images/reviews/$screens[$j]\" width=\"100\" height=\"100\"/>";
            	$t->set_var("SCREENS",$screen);
	        }

I tried to write:

$screen = $screen + "<img src=\"http://localhost/images/reviews/$screens[$j]\" width=\"100\" height=\"100\"/>";

But I only got ceros and other numbers...

Help???

Topper

Bump!

xblue

while waiting for someone to answer, read what people think about bumping here:
http://www.phpbuilder.com/board/showthread.php?s=&threadid=10220471
😉

in php the concatenation operator is a dot, not a plus.

example:

$text = "Some text.";
// append to $text
$text .= " More text.";

however, I don't think this will work with phplib templates, template system usually provide there own methods for this task, often referred to as "dynamic blocks".

phplib provides the function set_block() to define dynamic blocks, and parse() with an additional third argument set to TRUE to enable the append mode.

here's a tutorial that covers dynamic block:
http://www.devshed.com/Server_Side/PHP/PHPLib/page1.html

and really, you shouldn't have html like the image tag in you script when using templates properly.

[edit: oops, my grammar went wild :]]

Topper

Thanks xblue. Ill read that tutorial and try to get it working.

Sorry about the Bump, I really didnt know the community feelings about that and I promise it will never happen again.

Thx all of you people.
Bye