Sequential text rotator?

[Warlock]

I have code for random text rotator ,but i need sequential(line by line)
Here is code of working random text rotator:

<!-- Here begin code for rotating script -->
<?php
$fcontents = join ('', file ('text_ads.txt'));
$s_con = split("~",$fcontents);

$banner_no = rand(0,(count($s_con)-1));
echo $s_con[$banner_no];

And this is content of txt file:
<a href="http://phpbuilder.com" target="top" >TEXT LINK ONE</a>
~
<a href="http://phpbuilder.com" target="top" >TEXT LINK TWO</a>
~
What i need to change to make it sequential?

[laserlight]

I think that a better idea is to use the "~" markers to your advantage:

$s_con = array_filter(file('text_ads.txt'),
                      create_function('$a', 'return rtrim($a) != "~";'));

echo $s_con[array_rand($s_con)];

[Warlock]

laserlight wrote:

I think that a better idea is to use the "~" markers to your advantage:

$s_con = array_filter(file('text_ads.txt'),
                      create_function('$a', 'return rtrim($a) != "~";'));

echo $s_con[array_rand($s_con)];

I puted that code and it does absolutely same thing.

[laserlight]

What does it do? I am assuming that your file has the format:

text1
~
text2
~
text3
~

It should print, randomly chosen, one of "test1", "test2", and "test3". Note that there should not be a new line at the end. If there is, you have to account for it by tweaking the lambda-style function created.

[Warlock]

laserlight wrote:

What does it do? I am assuming that your file has the format:

text1
~
text2
~
text3
~

It should print, randomly chosen, one of "test1", "test2", and "test3". Note that there should not be a new line at the end. If there is, you have to account for it by tweaking the lambda-style function created.

That is what it do,but i need it sequential order.Now it pick randomly links.
Once is three,then seven,then one,then eight etc...
What i need is one,then two,then three etc.

[laserlight]

Oh wait... you actually want it to print in the order given by the file? If that is the case, then you need to store state, possibly by using another file to record the current line index. For example:

$s_con = array_filter(file('text_ads.txt'),
                      create_function('$a', 'return rtrim($a) != "~";'));

$index = file_get_contents('text_ads_index.txt');
file_put_contents('text_ads_index.txt', ($index + 1) % count($s_con)); // PHP5
echo $s_con[$index];

[Warlock]

laserlight wrote:

Oh wait... you actually want it to print in the order given by the file? If that is the case, then you need to store state, possibly by using another file to record the current line index. For example:

$s_con = array_filter(file('text_ads.txt'),
                      create_function('$a', 'return rtrim($a) != "~";'));

$index = file_get_contents('text_ads_index.txt');
file_put_contents('text_ads_index.txt', ($index + 1) % count($s_con)); // PHP5
echo $s_con[$index];

Something strange is with that.It show link one first,then nothing,then two then nothign then three then nothing then four then nothign and then it return to link one.And txt file have 8 links.

Content of txt file;
<a href="http://phpbuiilder.com" target="top" >TEXT LINK ONE</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK TWO</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK THREE</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK FOUR</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK FIVE</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK SIX</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK SEVEN</a>
~
<a href="http://phpbuiilder.com" target="top" >TEXT LINK EIGHT</a>
UPDATE:i removed ~ from txt file and it seems it's working.Now i will integrate that into script and if i encounter more problems then i will post here again.

[laserlight]

Oh, I made a slight mistake: array_filter() maintains the keys, so $s_con actually had even keys. There is a quick fix with array_values() that could be used:

<?php
$s_con = array_values(array_filter(file('text_ads.txt'),
                      create_function('$a', 'return rtrim($a) != "~";')));

$index = file_get_contents('text_ads_index.txt');
file_put_contents('text_ads_index.txt', ($index + 1) % count($s_con)); // PHP5
echo $s_con[$index];
?>

[Warlock]

And one question more-is it possible to restart rotation?Beacuse after i update/reload code rotation continued.

[laserlight]

And one question more-is it possible to restart rotation?Beacuse after i update/reload code rotation continued.

You have full control by editing text_ads_index.txt.

[Warlock]

Yes i know,but look this:when i run rotator.php,script goes one by one.1 link,2 link,3 link,4 link,5 link etc....When i close tab and run again rotator.php,it continue to to link 6 link 7 etc.That is what is bother me,can i reset rotation to link one without restarting browser.

[laserlight]

Yes i know,but look this:when i run rotator.php,script goes one by one.1 link,2 link,3 link,4 link,5 link etc....When i close tab and run again rotator.php,it continue to to link 6 link 7 etc.That is what is bother me,can i reset rotation to link one without restarting browser.

Well, obviously the text file on the server has no way to tell that you have closed the tab/browser.

Since you want the index to be specific to the user, you need something that is user specific and which can last between browser sessions. One way is to store a cookie with the index.