PHP - Random Number, If On The Edge Of Grid, Generate Another?

As above,

I have a lottery style site that picks a random number between 1-8 but my users complain for some reason that this is not enough.

So i was told to look into using fopen and random.org to generate a random number.

Anyone have experience of this and perhaps a code snippet for me to look at and possibly use?

help will be appreciated.

So I found this code from someone else on here who posted about creating a random string. I've copied the code for myself but when I upload php page to my server and view source... there is no php code. Essentially, i see no randomly generated text. what am i missing?

Code: [Select]
<?php
function genRandomString() {
    $length = 5;
    $characters = array_merge(range(0,9),range('a','z'),range('A','Z'));
$string = "";
    for ($p = 0; $p < $length; $p++) {
        $string .= $characters[mt_rand(0, count($characters)-1)];
    }
    return $string;
}
?>

How do you generate a random number like say, 0 through 10?

I want to select random sites from my database that have IDs 0 through 10.

Hi there. I need a function that can generate 15 random numbers between (1,10) and then converts those numbers to Roman numbers. Anyone can help me?

Hi, im trying to apply a random css class to a div so that a random image is generated on each refresh. This is the code i am using to apply the class.

Code: [Select]
<div class="<?php echo($randomimage); ?>">
Say i have an array of $image1 $image2 $image3 etc, how can i make $randomimage = 1 of these at random on each refresh?

I've found lots of tutorials that generate a random number online but none that generate a random variable and am having trouble piecing this together.

Any help would be hugely appreciated.
Richard

Hi, I have a script to add images to my tabel and and upload them to my server, I have managed to get the upload script to rename the image with a 5 digit random number on the end to prevent overwriting, the only problem I can't seem to be able to add the same name to my tabel. Any ideas? Thanks in advance.

Code: [Select]
<?php

 $idir = "uploads/";   // Path To Images Directory


if (isset ($_FILES['fupload'])){

//upload the image to tmp directory
$url = $_FILES['fupload']['name'];   // Set $url To Equal The Filename For Later Use 
if ($_FILES['fupload']['type'] == "image/jpg" || $_FILES['fupload']['type'] == "image/jpeg" || $_FILES['fupload']['type'] == "image/pjpeg") { 
$file_ext = strrchr($_FILES['fupload']['name'], '.');   // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php 
$copy = copy($_FILES['fupload']['tmp_name'], $idir. basename($_FILES['fupload']['name'], $file_ext).rand(10000 , 99999).$file_ext);   // Move Image From Temporary Location To Perm 
}
}
if (isset ($_FILES['fupload2'])){

//upload the image to tmp directory
$url = $_FILES['fupload2']['name'];   // Set $url To Equal The Filename For Later Use 
if ($_FILES['fupload2']['type'] == "image/jpg" || $_FILES['fupload2']['type'] == "image/jpeg" || $_FILES['fupload2']['type'] == "image/pjpeg") { 
$file_ext = strrchr($_FILES['fupload2']['name'], '.');   // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php 
$copy = copy($_FILES['fupload2']['tmp_name'], "$idir" . $_FILES['fupload2']['name'] $file_ext).rand(10000 , 99999).$file_ext);    // Move Image From Temporary Location To Permanent Location 
}
}
if (isset ($_FILES['fupload3'])){

//upload the image to tmp directory
$url = $_FILES['fupload3']['name'];   // Set $url To Equal The Filename For Later Use 
if ($_FILES['fupload3']['type'] == "image/jpg" || $_FILES['fupload3']['type'] == "image/jpeg" || $_FILES['fupload3']['type'] == "image/pjpeg") { 
$file_ext = strrchr($_FILES['fupload3']['name'], '.');   // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php 
$copy = copy($_FILES['fupload3']['tmp_name'], "$idir" . $_FILES['fupload3']['name'] $file_ext).rand(10000 , 99999).$file_ext);      // Move Image From Temporary Location To Permanent Location 
}
}
if (isset ($_FILES['fupload4'])){

//upload the image to tmp directory
$url = $_FILES['fupload4']['name'];   // Set $url To Equal The Filename For Later Use 
if ($_FILES['fupload4']['type'] == "image/jpg" || $_FILES['fupload4']['type'] == "image/jpeg" || $_FILES['fupload4']['type'] == "image/pjpeg") { 
$file_ext = strrchr($_FILES['fupload4']['name'], '.');   // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php 
$copy = copy($_FILES['fupload4']['tmp_name'], "$idir" . $_FILES['fupload4']['name'] $file_ext).rand(10000 , 99999).$file_ext);      // Move Image From Temporary Location To Permanent Location 
}
}

 $usr = "user";
    $pwd = "pass";
    $db = "db";
    $host = "host";

    # connect to database
    $cid = mysql_connect($host,$usr,$pwd);
    if (!$cid) { echo("ERROR: " . mysql_error() . "\n");    }

    if ($_POST['submit']) {
$logo = mysql_real_escape_string("$idir" . $_FILES['fupload']['name']);
$image1 = mysql_real_escape_string("$idir" . $_FILES['fupload2']['name']);
$image2 = mysql_real_escape_string("$idir" . $_FILES['fupload3']['name']);
$image3 = mysql_real_escape_string("$idir" . $_FILES['fupload4']['name']);

$SQL = " INSERT INTO mhhire ";
        $SQL .= "  image1, image2, image3, logo) VALUES ";
        $SQL .= " ('$image1', '$image2', '$image3', '$logo') ";

$result = mysql_db_query($db,$SQL,$cid);
      $last=mysql_insert_id();

        if (!$result) { echo("ERROR: " . mysql_error() . "\n$SQL\n");    }

header("location:thanks.php");
exit();

    }
?>

Hi All,

I created this simple function to generate random doubles..... Please your opinions!


function GetRandomFloatNumber($min = false, $max = false, $dec_min = false, $dec_max = false)
{
// Seed the generator
mt_srand((double)microtime()*1000000);

// Set the default min and max if no parameter has been passed
if ($min === false)
$min = 0;
if ($max === false)
$max = mt_getrandmax();
if ($dec_min === false)
$dec_min = 0;
if ($dec_max === false)
$dec_max = mt_getrandmax();
// units
$units = mt_rand($min, $max);
// Decimals
$decimals = mt_rand($dec_min, $dec_max);
// Set double
$doublenumber = $units.'.'.$decimals;
// Return double
return $doublenumber;
}

Hello........

Currently i am struggling with php script....... can any one tell me or guide me how to code Automatically generating random number with in the range of 19 to 90 and the number has to change with in 24 hours time duration.........
It's urgent........

Thanks in advance.....
Rooban.S

Hi..

I started designing stock form.

and I need to display automatically the stock number, the format is:yymmddxxx for example : 120323001

I need to display that stock number in my textbox when I first visit in my form...

Thank you so much...

How can you use PHP to generate a serial number?

e.g. DF34-VB89-98AP-34NQ-QQUI-23AW

Hi,

What I'm trying to do is create a script that generates a random list of cars whenever it is run. I have a list of available cars in a MySQL database. I'm just not sure how to get php to generate a list of, say, 20 cars, that are randomly picked from the cars in the database. I may also want to add other statistics like MPG (also already in the database). Can anyone show me how to do this? And is it possible to format the returned data in a table or div format?

Thanks in advance
Unk

Basically I am setting up my own cricket management game, but there are 3 areas that I am slightly stuck on and would appreciate help:

1) When a use registers, I need to create 11 players for their team. For this, I am going to have one text files with first names and one text file with surnames. How can I open each file and select a name and then match them together?

2) I need to create the list of games to be executed at particular times through a cron job. How can I go through all the teams in a table and match them together in games, ensuring everyone plays everyone? If a new player registers, he will be put into a random league and so the games for that league will have to be redone

3) How can I set up a cron job to execute the above games? Each team should play once a day and so if there are 24 teams in a table, there will be 12 games that occur through this cron job. I assume cron jobs are the best thing for this.

Any help would be appreciated.
Thanks.

Hey folks!

I am looking to build a small adventure game in PHP and the key to this will be a 3x3 (or possibly bigger) grids of squares, with the user situated in the centre.

I therefore need to be able to figure out the co-ords of the surrounding squares.

Presumably I will need to define the size of the master grid, then using the co-ords of the current square (defined from a database containing the users location), calculate the co-ords for the surrounding 8 grid squares.

Has anyone had any experience with this? Where should I start? (Maths isn't my strong point tbh, but I can pick things up quickly)

Thanks in advance!

EDIT - in case it wasn't too clear, the "world map" would be something like 1000x1000 squares, but the player can only see the 3x3 grid  at there location.

is there a way to make a random number input into mysql?

like if i add a new customer to a table, i want to assign a random number to that customer.

Hi Guys

I have a code what inserts very simple queries to database, im trying to add a random reference number for each enrty using
$reference = rand(111111111111,999999999999);

but each time I add an entry it gives me the same random number previously generated for previous entry

can you help pleasE?