PHP - Selecting A Certain Amount

Okay, I have a healing spell that allows people to regain stats when it's cast. But, how do I limit it so that they can't go over their maxhp?

Here's what I have so far:


$db->execute("UPDATE `users` SET `hp`=?, `mp`=?, `energy`=? WHERE `id`=?", array($player->hp + $healspell, $player->mp - $spell['mp'], $player->energy - $spell['energy'], $player->id));


What do I need to do in this to tell it to limit it to the maxhp but never going over it? $healspell is a random number, so it is quite possible to go over the maxhp at the moment.

Thank you!

If I knew what to call it I could have searched it.  So I will just explain.

I have a form that is pulling from a database to build the following.
echo <input name='$row[id]' type='text' id='$row[id]' size=2>;

This will build a page that has this
<input name='22' type='text' id='22' size=2>
<input name='54' type='text' id='54' size=2>

This part works great.  The problem is when I try to add it to the database.  How can I insert variables that I don't know the names of?  They will be something like $_POST[22]   $_POST[54] and so on.  I hope someone can understand my jibberish.

I am sure there is a WAY better way to do this.

Hi All,

Im new to this forum but think its going to be a regular location for me for quite a while.

Im very very new to php and the guy that was doing code for me is not responding to emails, so i thought id have a go myself...lol
at the moment im going through the trial and error phase while learning.

I have edited some of the code he has put on the site to create a new look.
the original page: http://www.ridersguide.co.uk/county_accommodation.php?county=4;
the one im trying:http://www.ridersguide.co.uk/county_accommodation2.php?county=4;

The new bit is to add a preview of the text for the page.

echo $row[ad_text];
the code above brings up all the text but i only want to show the first 4 or 5 lines. Is this possible in php?

Any help appreciated

Neil

Hi,

I'm trying to code a page which displays the amount of users currently viewing a page. But how do I decrease the count if a user closes the page?

Thanks

So I wrote this piece of code that for the most part works. The problem is two things. One if I print out say $dir[$i] I get 7 directories back. if I try and store that in an array to later be access by some other function I get up to 24+ C's instead of C:/Path...

Code: [Select]
public function aisis_get_dir_array($dir){

if(!is_array($dir)){
aisis_get_dir($dir);
return;
}

$count = count($dir);
for($i = 0; $i<$count; $i++){
if(!is_dir($dir[$i])){
_e('Specified dir' . $dir[$i] . 'is not a directory.');
}

$this->directory_list = $dir[$i]; //store these

$handler = opendir($dir[$i]);
while($file = readdir($handler)){
if($file != "." && $file != ".."){
$this->files[] = $file;
}
}

}

return $this->files;
}

right under the line: $this->directory_list = $dir[$i]; //store these if You put in echo $dir[$i] you get back directories.
How ever down in this function:

Code: [Select]
public function load_if_extentsion_is_php($dir, $array = false){
$list = array();
$list_dir = array();

if($array == true){
$list = $this->aisis_get_dir_array($dir);
$list_dir = $this->directory_list;
}
else{
$list = $this->aisis_get_dir($dir);
}

$count = count($list);
for($i = 0; $i<$count; $i++){
if($array == true){
$countdir = count($this->directory_list);
for($j = 0; $j<$countdir; $j++){
echo $list_dir[$j];
//echo $list_dir[$j];
//echo $list[$i];
}
}
//if(substr(strrchr($list[$i],'.'),1)=="php"){
//echo $list[$i];
//require_once($dir . $list[$i]);
//}
}

}

echoing out: echo $list_dir[$j]; gets you up to 24+ C's instead of the directories that are stored.

You can view the whole class at  Paste bin - there is an expiry: 12 hours.

Essentially you call load_if_extentsion_is_php($dir, $array = false) pass it an array of directories and set the array part to true.

To Summarize:

If you pass in an array of directories you should get back:

a echoed list of directories
a echoed list of php files belonging in those directories.

Currently you get the later and a series of C's for  the first.

Why?

I am working on php script that takes an input (using html) stores those values in a separate text file. I managed to get that to work. But the thing is I wanted to be able to sort those values alphabetically. Since their are an unspecified amount of inputs I tried using an explode on my output in order to store those values as an array so that I can sort them. Problem is explode makes each input its own separate array instead of one whole array. I figure some type of loop is needed to fix that but I can't figure out how to go about creating it [I'm pretty new to php]. Any advice? Heres my code for my PHP script:

$filename = "ip_collection.txt";
$fileHandle = fopen('ip_collection.txt', 'a+') OR die("can't open file\n");
$ip = $_SERVER['REMOTE_ADDR'];
$name = stripslashes($_POST['lastName'] . ", " . $_POST['firstName']);
$textFromForm = $name. " | " . $ip;
$newtext = $textFromFile . $textFromForm;
$output = explode("\n",$newtext);
sort($output);
foreach($output as $key => $value) {
fwrite($fileHandle, $value."\n");
}
fclose($fileHandle);

Hi, i have a folder with thumbnails and original big pictures of the thumbnails, i wanna make it so that the max amount of thumbs that can be displayed on one page would be 3

Code: [Select]
<body>
<div id=head></div>
<div id=main>
<?php include("loadimages.php") ?> //<- here i take all the thumbnails that are in my thumb folder
</div>
<div id=foot></div>
</body>

i have 5 thumbnails, it displays all of them in the "main" div, i wanna add an "Next" and "Previous" buttons, i mean, i want it to show only 3 thumbs at one time, once u click "next" it would remove the first 3 thumbs and load the other 2 thumbnails..

heres a pic maybe it will explain better of what im trying to do..

Hey Guys,

I'm looking to echo a large amount of complicated text that includes a lot of symbols, such as this:

Code: [Select]
V\"`'8\"`%n\"`)*$6A`!K!`2D\"`-t\"`!8\"`,?$`!1#D`\"i!`&2%` 9!`$S\"`#C)`# \"`\">\"7`)Q$`+Y\"C`!B!`%2\"`(e\"`($-`&M(`&C#F`$Q$`-P(`$P\"`#Q-`\"A\"`$CA`1e1` 5(`2GC0%2`&x!`'\"#`,i$`%D\"77`\"W!`%K!`$A.`/q+`(V\"`!J\"`,/\"`//%6E`$:#`.%)`\"u!`.d&`,K$`&F#`#V%`!z%`#2\"` &\"`&0!`3.&`2V%`)#+`\"t\"`.,\"` E!`(m&`3P(7`%l*`#q\"`-Q!`(#\"`&#1`1)\"` kC`#P+`$I2`-#\"`3<66`0H!`,|&6`#d#`$}.
Can anyone shed some light as to how I would be able to echo the above without having to backlash all the clashing symbols and preferably without having to include an external file?

All your help is greatly appreciated.
Extreme.

if i want to display upcoming events and only want to show the top 3?

Hi,

I have a function where I want to sort an an array of this type:

0 = {'fruit' => 'banana', 'color' => 'yellow', 'age' => '1', 'weight' => '2', 'brand' => 'dole', 'store' => shaws'}
1 = {'fruit' => 'apple', 'color' => 'red', 'age' => '3', 'weight' => '5', 'brand' => 'fuji', 'store' => 'foodmaster'}
etc etc.

I then want to array_multisort this array with different parameters. One way is to sort by fruit, then color, then brand. The second way by age, then store.

Code: [Select]
//This is how I sort it for my first way
//Let's call the array $rows
function sort($rows) {
foreach($rows as $key => $value) {
        $fruit[$key] = $value['fruit'];
$color[$key] = $value['color'];
$brand[$key] = $value['brand'];
    }

    array_multisort($fruit, SORT_ASC, $color, SORT_ASC, $brand, SORT_ASC $rows);
}
I want to try to reuse this function by passing in the keys that I want to sort with. Like doing sort($rows, array('fruit', 'color', 'brand')), then sort($rows, array('age', 'store')). Is this possible?

         

Hi guys,

Im a newb here, so bear with me! Still learning the ropes.

I want to delete all files from my server that are 6 hours old since being uploaded to the site. I believe i need a cron job? I currently have this script in its framework...

Code: [Select]
<?php

//time interval for deletion to occur...
$x = 30;

//timestamp
$current_time = time();

//the file you wish to delete
$file_name = 'file.txt';

//timestamp
$file_creation_time = filemtime($filename);

//extract difference
$difference = $current_time - $file_creation_time;

//if difference = $x...then delete file
if ($difference == $x) {
unlink($file_name);
}

Would that work automatically or would it need a cron to run it?

And how could i test it, that bit worries me.

Many thanks.

Hi,


I am new to PHP world!!

I am just trying to find a way to disable a button after its been clicked for lets say 5 minutes.

I have searched google and haven't found what I am looking for.

I just dont want the users to be able to refresh the page and the button becomes enabled again.

any code examples with explanation or a simple tutorial will be much appreciated.

Thanks

My code:

Code: [Select]
$rank =  implode(',', $ibforums->input['rank']);
echo $rank;
For that form, it will show:

'2,0,0'


Problem is, I need to update each row with each individual value, and is this possible with using  1 query?

Hi, I'm not necessarily looking for code examples for my problem, (they are welcome but its not my explicit goal). I'm looking more for advice on how to go about tackling the problem i have.

what i already have
Currently i have a search getting results from a MySQL database.
The results are ordered by one field that signifies their importance.
Many of these results have the same value in this one column, and i have a switch statement to distinguish different content/styles for the different values. (there are just over 10 different bands)

So the most important results are shown first and with a different style to the ones below it. (some bands have the same styling)

what i need
I would like to be able to randomize the results but only randomize the results within their specified bands.
e.g. lets say theres 100 results in band A and 100 in band B. I still want everything in band A to be listed above band B, but i would like to randomly change the order of the results in band A and band B, (in this case once a week). I need to save the order of this randomization (client/server side?) for a week, then run the script again to set a new order.


Now I would still class myself as an amateur php'er so at this stage i dont even know how i would go about separating the bands and randomizing their results independantly, let alone causing this functionality to run only once a week.



So can anyone suggest a way i might go about this? I'm pretty stuck right now.

Cheers

did some searching on the internet and didnt find much.
i have created an online classifieds website and want all created listings to expire and delete after a certain amount of days.
honestly i have no idea where to start with this implementation. cookies were the only thing that even crossed my mind...
any ideas?
btw each listing is stored in a table called ob_listings