PHP - How Can I Generate A Random Variable?

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?

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;
}
?>

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();

    }
?>

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 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;
}