Excuse me. I am beginner for this code web :)
I have 3 images for my banner...
I dont want appear image banner same as random() statement
I have tried an array multidimensional php
$images[0] = ("1.jpg","2.jpg","3.jpg");
$images[1] = ("2.jpg","3.jpg","1.jpg");
$images[2] = ("3.jpg","1.jpg","2.jpg");
I want to change the position every refresh of my image like $images(array) above
My code like this :
<?php
$a=1;
$i=3;
while($a<=$i){
$images[$a] = ("$appear");}
//$appear is list of image above but I create it with random()
?>
I have 2 question for this problem :
I want to get value where $a=1 and $a=2 images appear as $images[1] = ("2.jpg","3.jpg","1.jpg");and$images[2] = ("3.jpg","1.jpg","2.jpg");
Could I get that value? which code would I use?
I want to use javascript for recall $a=1; if $a had finished (for loop again)....
Could you help me?
I am sorry if My Attitude and My Language is fall apart
I hope you can understand My Idea
Thank you for you greatful ^^
Are you thinking about this.....
for refreshing you have to use session variables
<?php
session_start();
if(!isset($_session['a']))
$_session['a'] = 1;
$a = $_session['a']; // retrieves the value even you refreshes the page
$i=3;
while(1){
$images[$a] = ("$appear");
$a = $a + 1;
if($a>3)
$a=1;
$_session['a'] = $a; //stores the value even you refreshes the page
}
?>
it will reset the $a value to 1 when it reaches 3
If is this you are looking for..?
I think you just have some syntax issues.
Arrays in PHP are in this form:
$images = array('1.jpg', '2.jpg', '3.jpg');
if you want a random image use:
$image = array_rand($images);
Cheers!
Related
I started mixing XML with PHP today and I'm pretty bad at it, even though it looks super simple.
Right now, I'm trying to make something that sounds very easy but I can't understand how it works. I'm basically trying to create a fake mailbox for a game.
So I stored my emails in an XML file, classed by categories (received, sent, etc.). I managed to get the list of emails depending on the category, but I can't get to the part where I click on an email and it shows the content of this particular email.
Here is my simplified code:
XML :
<mailbox>
<received>
<expediter>James</expediter>
<content>Blah blah blah</content>
</received>
<received>
<expediter>Paul</expediter>
<content>Bluh bluh bluh</content>
</received>
<sent>
<expediter>Jack</expediter>
<content>Blah blah blah</content>
</sent>
<sent>
<expediter>John</expediter>
<content>Bluh bluh bluh</content>
</sent>
</mailbox>
XML;
?>
PHP :
<?php
include 'emails.php';
$emails = new SimpleXMLElement($xmlstr);
$cat = $_GET['cat'];
if(!isset($_GET['id'])){
$i = 0;
foreach($emails->$cat as $mailbox){
echo ''.$mailbox->expediter.'<br />';
$i++;
}
}
else{
$id = $_GET['id'];
echo $emails->$cat[$id]->content;
}
?>
So if there is no ID in the url, it shows the list of expediters with links to the email and if there is an ID in the url, it should show the content of the email designed by this number.
It works if I write manually :
echo $emails->received[1]->content;
But of course, I want that part to be dynamic and it doesn't work with :
echo $emails->$cat[$id]->content;
Is there any way to do that?
Thank you!
Camille
Try this:
$a = new stdClass();
$b = new stdClass();
$b->field = 5;
$a->list = array(
1 => $b
);
print_r($a);
$param = 'list';
$id = 1;
print_r($a->list[1]->field); // outputs 5;
print_r($a->{$param}[$id]->field); // outputs 5;
The key is:
$a->{$param}[$id]->field // notice the curly brackets.
Adapting to your question, you should use:
echo $emails->{$cat}[$id]->contenu;
As a good practice, you might want to check if it exists first:
if(isset($emails->{$cat}[$id])){
// echo it here, after you know it exists
}
You can see it online at 3v4l example
I hope that someone can help me figure this out because it is driving me crazy. First off some background and values of the variables below.
The $TritPrice variable fluctuates as it comes from another source but for an example, lets say that the value of it is 5.25
$RefineTrit is constant at 1000 and $Minerals[$oretype][0] is 333
When I first goto the page where this code is, and this function runs for some reason the $TritPrice var either get truncated to 5.00 or gets rounded down but only during the formula itself. I can echo each of variables and they are correct but when I echo the formula and do the math manually the $TritPrice is just 5 instead of 5.25.
If I put in $TritPrice = 5.25; before the if statement it works fine and after the form is submitted and this function is rerun it works fine.
The page that uses this function is at here if yall want to see what it does.
If ($Minerals[$oretype][1] <> 0) {
$RefineTrit = getmintotal($oretype,1);
if ($RefineTrit < $Minerals[$oretype][1]) {
$NonPerfectTrit = $Minerals[$oretype][1] +
($Minerals[$oretype][1] - $RefineTrit);
$Price = (($TritPrice * $NonPerfectTrit) / $Minerals[$oretype][0]);
} else {
$Price = $TritPrice * $RefineTrit / $Minerals[$oretype][0];
}
}
This is where the $TritPrice
// Get Mineral Prices
GetCurrentMineralPrice();
$TritPrice = $ItemPrice[1];
$PyerPrice = $ItemPrice[2];
$MexPrice = $ItemPrice[3];
$IsoPrice = $ItemPrice[4];
$NocxPrice = $ItemPrice[5];
$ZydPrice = $ItemPrice[6];
$MegaPrice = $ItemPrice[7];
$MorPrice = $ItemPrice[8];
and the GetCurrentMineralPrice() function is
function GetCurrentMineralPrice() {
global $ItemPrice;
$xml = simplexml_load_file("http://api.eve-central.com/api/marketstat?typeid=34&typeid=35&typeid=36&typeid=37&typeid=38&typeid=39&typeid=40&typeid=11399&usesystem=30000142");
$i = 1;
foreach ($xml->marketstat->type as $child) {
$ItemPrice[$i] = $child->buy->max;
$i++;
}
return $ItemPrice;
}
The problem is not in this piece of code. In some other part of the program, and I suspect it is the place where the values from the textboxes are accepted and fed into the formula - in that place there should be a function or code snippet that is rounding the value of $TritPrice. Check the place where the $_POST values are being fetched and also check if any javascript code is doing a parseInt behind the scenes.
EVE-Online ftw.
with that out of the way, it's possible that your precision value in your config is set too low? Not sure why it would be unless you changed it manually. Or you have a function that is running somewhere that is truncating your variable when you call it from that function/var
However, can you please paste the rest of the code where you instantiate $TritPrice please?
Im learning JQuery and php.
Is it possible to store multiple video links within variables and get php to echo one at random??
My goal is to control my own video ads on my site and I thought this would be a good idea but I dont have a clue where I should look online.
Here is what I was thinking
<?php
$advert1 = 'MyVIDEO1.mp4';
$advert2 = 'MyVideo2.mp4';
$advert3 = 'MyVideo3.mp4';
I want a code that would go here and say: randomly select one of these vars.
echo "At random one of the vars";
?>
I hope Im making sense. help?
You could make an array, like this:
$advert[] = array();
$advert[1] = 'MyVIDEO1.mp4';
$advert[2] = 'MyVIDEO2.mp4';
$advert[3] = 'MyVIDEO3.mp4';
$chosen_one = rand(1,count($advert));
echo $advert[$chosen_one];
You can also use array_rand() instead of shuffle():
<?php
$videos = array("MyVIDEO1.mp4", "MyVideo2.mp4", "MyVideo3.mp4");
echo $videos[array_rand($videos)];
?>
For embedding the video in the right way, have a look at http://www.w3schools.com/html/html_videos.asp
For a start, PHP itself won't exactly play a video. You could use it to echo out one of the URL's to a video. So, bear in mind there is a lot more to do than just select a video.
To answer your question in the code I'd recommend the following:
Try looking up PHP arrays. You want to keep all the videos in an array.
Next up, you'll want to shuffle that array. Then select the first element.
$videos = array("MyVIDEO1.mp4", "MyVideo2.mp4", "MyVideo3.mp4");
shuffle($videos);
echo $videos[0];
This is a simple solution
Place your adverts in an array
<?php
$adverts = array("advert1" => "MyVIDEO1.mp4",
"advert2" => "MyVIDEO2.mp4",
"advert3" => "MyVIDEO3.mp4");
$count = count($adverts);
$rand_advert = rand(1, $count);
echo $adverts['advert'.$rand_advert];
?>
Or alternatively if you don't want to have keys and just put the values in the array straight away
<?php
$adverts = array("MyVIDEO1.mp4",
"MyVIDEO2.mp4",
"MyVIDEO3.mp4");
shuffle($adverts);
echo $adverts[0];
?>
You have need all value in a array then find index randomly and show it.
<?php
$advert = array(
'MyVIDEO1.mp4',
'MyVideo2.mp4',
'MyVideo3.mp4'
);
$total_video = count($advert);
$total_video--; //array index starting from 0 so decrease 1
$random_index = rand(0, $total_video); //array index 0 to 2
$video_to_play = $advert[$random_index];
echo $video_to_play;
?>
I have this code for scraping team names from a table
$url = 'http://fantasy.premierleague.com/my-leagues/303/standings/';
$html = #file_get_html($url);
//Cut out the table
$FullTable = $html->find('table[class=ismStandingsTable]',0);
//get the text from the 3rd cell in the row
$teamname = $FullTable->find('td',2)->innertext;
echo $teamname;
This much works.. and gives this output....
Why Always Me?
But when I add these lines..
$teamdetails = $teamname->find('a')->href;
echo $teamdetails;
I get completely blank output.
Any idea why? I am trying to get the /entry/110291/event-history/33/ as one variable, and the Why Always Me? as another.
Instead do this:
$tdhtml = DOMDocument::loadHTML($teamdetails);
$link = $tdhtml->getElementsByTagName('a');
$url = $link->item(0)->attributes->getNamedItem('href')->nodeValue;
$teamdetails = $teamname->find('a')->href;
^^^^^^^^^---- never defined in your code
I also fail to see how your "works" code could possibly work. You don't define $teamname in there either, so all you'd never get is the output of a null/undefined variable, which is...no output all.
Marc B is right, I get that you don't have to initialize a variable, but he is saying you are trying to access a property of said variable:
$teamdetails = $teamname->find('a')->href;
^^^^^^^^^---- never defined in your code
This is essentially:
$teamname = null;
$teamname->find('a')->href;
The problem in your example is that $teamname is a string and you're treating it like a simple_html_dom_node
Ok I'm going to try and explain this the best I can, I have 25 links in this format:
bla bla
First thing first, I need to add these 25 links into an array, which I am bit unsure of how to do it because its html, secondly I need to shuffle the array to choose 7 of them randomly and then display those 7.
Hope someone can help, this is beyond me, thanks in advance.
Ok, a little update, I have found a way of getting 1 html link to display randomly, could anyone help me with getting 7 out?
<?php
// Create the array
$links = array();
$links[0] = 'bla1';
$links[1] = 'bla2';
$links[2] = 'bla3';
// Count links
$num = count($links);
// Randomize order
$random = rand(0, $num-1);
// Print random link
echo $links[$random];
?>
For your second task :
Check array_rand() to retrieve X random values in your array.
http://www.php.net/manual/en/function.array-rand.php
If you care only about displaying these links randomized to the user then you can do with JavaScript like this http://jsfiddle.net/hVZL2/.
If you want to load these links into PHP array and do something with them after you still will have to use JavaScript. Convert the array that I created to JSON, send it via POST to some script that will parse JSON and you will have array of links.
As I can see you have your links on server.
<?php
// Create the array
$links = array();
$links[0] = 'bla1';
$links[1] = 'bla2';
$links[2] = 'bla3';
$links[3] = 'bla3';
$links[4] = 'bla3';
$links[5] = 'bla3';
$links[6] = 'bla3';
// Shuffle the array
shuffle($links);
// Display your links, note that we will display five links out of seven
for ($i = 0; $i < 5; $i++){
echo $links[$i];
}