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PHP - Creating Unique String
Can anyone help me with the following please.
Upon loading the page, I want to generate a random string based of the following... Select one value from the following array Code: [Select] $categories = array("easy", "medium", "hard")And generate a random number from one to five. The string would then look like hard1 or easy5 etc.. Then check if the string generated exists in the following session array Code: [Select] $_SESSION['asked']If not, add it to that array and continue, if it is, create a new random string and check if that one exists and loop until its found one that isn't. Thank you in advance Similar TutorialsHi everyone, I'm new here and really in need of some help with some script I've been trying to get right. Basically I'm trying to write a function that will interface with Gravity Forms and Wordpress but this is NOT a GForms or Wordpress issue it's pure PHP honest! The function will pull the post code a user has entered on the first page of a Gravity Form, and then take the spaces out of it and make sure it's in upper case. This much I've got working. Now I need it to add a hyphen and a three digit number starting at 001, so it'll look like AB12CD-001. Now it will need to check if this is username has already been used by calling the Wordpress function username_exists (http://codex.wordpress.org/Function_Reference/username_exists) and if it does increase the suffix number by one and recheck until it finds the next available number. This could result in the user living in the post code AB1 2CD ending up with the username AB12CD-021 if there are 20 others in the local area obviously. Now this will then post back to the Gravity Forms registration form on the next page and fill in the username for the user, this I can also do. So hopefully you can see it's the PHP bit I'm stuck on and I would really appreciate any help. Cheers guys Hey all, I'm trying to upload multiple image(which works great) but the problem I'm having is when an image is uploaded it over-rights a previous image if they are the same name and the old one is gone. Solution: create a unique name for each image before it's uploaded, change the name and then upload it. I can't seem to figure the correct syntax. My thought was to take the image name and add a random number to the front of it. Am i going about this the right way? thanks for the replies in advance. code below Code: [Select] if (isset($_POST['Submit'])) { $number_of_file_fields = 0; $number_of_uploaded_files = 0; $number_of_moved_files = 0; //creating my random number $random_digit=rand(0000,9999); $uploaded_files = array(); $upload_directory = dirname(__file__) . '/car-images/'; //set upload directory for ($i = 0; $i < count($_FILES['images']['name']); $i++) { $number_of_file_fields++; if ($_FILES['images']['name'][$i] != '') { //check if file field empty or not $number_of_uploaded_files++; $uploaded_files[] = $_FILES['images']['name'][$i]; if (move_uploaded_file($_FILES['images']['tmp_name'][$i], $upload_directory . $_FILES['images']['name'][$i])) { $number_of_moved_files++; } } } $image0 = $uploaded_files[0]; $image1 = $uploaded_files[1]; $image2 = $uploaded_files[2]; $image3 = $uploaded_files[3]; $image4 = $uploaded_files[4]; I've started a to-do app, and everything works fine. Every user has his own unique to-do items that he can add. The only issue is that when I log-in with a user, ALL the items of all users are displayed when I'm redirect to my main page. I want to make it as so every user has his own page where only the to-do items he has created are visible, not every item from every user. I'm a total beginner with PHP so I'm sorry if this is a stupid question. This is my todomain.php code
<?php
require 'db_conn.php';
require 'config.php';
session_start();
// If the session variable is empty, this
// means the user is yet to login
// User will be sent to 'login.php' page
// to allow the user to login
if (!isset($_SESSION['id'])) {
$_SESSION['msg'] = "You have to log in first";
header('location: login.php');
}
// Logout button will destroy the session, and
// will unset the session variables
// User will be headed to 'login.php'
// after loggin out
if (isset($_GET['logout'])) {
session_destroy();
unset($_SESSION['id']);
header("location: login.php");
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset= "UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<link rel="stylesheet" href="css/bootstrap-grid.min.css">
<link rel="stylesheet" href="css/bootstrap.min.css">
<link rel="stylesheet" href="style.css">
<a href="index.php?logout='1'" style="color: black;">
Click here to Logout
</a>
<?php if (isset($_SESSION['success'])) : ?>
<div class="error success" >
<h3>
<?php
echo $_SESSION['success'];
unset($_SESSION['success']);
echo $_SESSION["username"]
?>
</h3>
</div>
<?php endif ?>
<title>TODO App</title>
<script src="https://kit.fontawesome.com/d72928d9b9.js" crossorigin="anonymous"></script>
</head>
<body>
<div class="container m-5 p-2 rounded mx-auto bg-light shadow">
<!-- App title section -->
<div class="row m-1 p-4">
<div class="col">
<div class="p-1 h1 text-primary text-center mx-auto display-inline-block">
<i class="fa fa-check bg-primary text-white rounded p-2"></i>
<u>My Todo-s</u>
</div>
</div>
</div>
<!-- Create todo section -->
<form action="app/add.php" method="POST" autocomplete="off">
<div class="row m-1 p-3">
<div class="col col-11 mx-auto">
<div class="row bg-white rounded shadow-sm p-2 add-todo-wrapper align-items-center justify-content-center">
<div class="col">
<input class="form-control form-control-lg border-0 add-todo-input bg-transparent rounded" type="text" name="title" placeholder="Add new ..">
</div>
<div class="col-auto m-0 px-2 d-flex align-items-center">
<label class="text-secondary my-2 p-0 px-1 view-opt-label due-date-label d-none">Due date not set</label>
<i class="fa fa-calendar my-2 px-1 text-primary btn due-date-button" data-toggle="tooltip" data-placement="bottom" title="Set a Due date"></i>
<i class="fa fa-calendar-times-o my-2 px-1 text-danger btn clear-due-date-button d-none" data-toggle="tooltip" data-placement="bottom" title="Clear Due date"></i>
</div>
<div class="col-auto px-0 mx-0 mr-2">
<button type="submit" class="btn btn-primary">Add</button>
</div>
</div>
</div>
</div>
</form>
<?php
$todos=$conn->query("SELECT * FROM todos ORDER BY id ASC");
?>
<div class="row mx-1 px-5 pb-3 w-80">
<div class="col mx-auto">
<?php
while($todo=$todos->fetch(PDO::FETCH_ASSOC)){ ?>
<!-- Todo Item 1 -->
<div class="row px-3 align-items-center todo-item rounded">
<?php if($todo['checked']){ ?>
<input type="checkbox" class="check-box" data-todo-id="<?php echo $todo['id'];?>" checked />
<h2 class="checked"><?php echo $todo['title'] ?> </h2>
<div class="col-auto m-1 p-0 todo-actions">
<div class="row d-flex align-items-center justify-content-end">
</div>
</div>
<?php } else{ ?>
<input type="checkbox" class="check-box" data-todo-id="<?php echo $todo['id'];?>"/>
<h2><?php echo $todo['title'] ?></h2>
<?php } ?>
<div class="col-auto m-1 p-0 d-flex align-items-center">
<h2 class="m-0 p-0">
<i class="fa fa-square-o text-primary btn m-0 p-0 d-none" data-toggle="tooltip" data-placement="bottom" title="Mark as complete"></i>
</h2>
</div>
<div class="col-auto m-1 p-0 todo-actions">
<div class="row d-flex align-items-center justify-content-end">
<h5 class="m-0 p-0 px-2">
<i class="fa fa-pencil text-info btn m-0 p-0" data-toggle="tooltip" data-placement="bottom" title="Edit todo"></i>
</h5>
<h5 class="m-0 p-0 px-2">
<i class="remove-to-do fa fa-trash-o text-danger btn m-0 p-0" data-toggle="tooltip" data-placement="bottom" title="Delete todo" id="<?php echo $todo['id']; ?>"></i>
</h5>
</div>
<div class="row todo-created-info">
<div class="col-auto d-flex align-items-center pr-2">
<i class="fa fa-info-circle my-2 px-2 text-black-50 btn" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Created date"></i>
<label class="date-label my-2 text-black-50"><?php echo $todo['date_time'] ?></label>
</div>
</div>
</div>
</div>
<?php } ?>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="js/bootstrap.bundle.min.js"></script>
<script src="js/myjs.js" ></script>
<script src="js/jquery-3.3.1.min.js"></script>
<script>
$(document).ready(function(){
$(".remove-to-do").click(function(e){
const id = $(this).attr('id');
$.post('app/remove.php',
{
id: id
},
(data) => {
if(data){
$(this).parent().parent().parent().parent().hide(300);
}
}
);
});
$(".check-box").click(function(e){
const id = $(this).attr('data-todo-id');
$.post('app/checking.php',
{
id: id
},
(data) => {
if(data!='error'){
const h2= $(this).next();
if(data === '1'){
h2.removeClass('checked');
}else{
h2.addclass('checked');
}
}
}
);
});
});
</script>
</body>
</html>
I have a mysql table which will store users email addresses (each is unique and is the primary field) and a timestamp. I have added another column called `'unique_code' (varchar(64), utf8_unicode_ci)`. What I would very much appreciate assistance with is; a) Generating a 5 digit alphanumeric code, ie: 5ABH6 b) Check all rows the 'unique_code' column to ensure it is unique, otherwise re-generate and check again c) Insert the uniquely generated 5 digit alphanumeric code into `'unique_code'` column, corresponding to the email address just entered. d) display the code on screen. What code must I put and where? **My current php is as follows:** Code: [Select] require "includes/connect.php"; $msg = ''; if($_POST['email']){ // Requested with AJAX: $ajax = ($_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'); try{ if(!filter_input(INPUT_POST,'email',FILTER_VALIDATE_EMAIL)){ throw new Exception('Invalid Email!'); } $mysqli->query("INSERT INTO coming_soon_emails SET email='".$mysqli->real_escape_string($_POST['email'])."'"); if($mysqli->affected_rows != 1){ throw new Exception('You are already on the notification list.'); } if($ajax){ die('{"status":1}'); } $msg = "Thank you!"; } catch (Exception $e){ if($ajax){ die(json_encode(array('error'=>$e->getMessage()))); } $msg = $e->getMessage(); } } I've been struggling with being able to send an e-mail via the php mail() function when the body of the e-mail includes a "unique" URL. The string that will not work is: "https://p11.secure.hostingprod.com/@www.domain.com/dir/directory/file.ext" The point within the string that breaks the capability, is the "/" after www.domain.com. I have tried escaping it like so: "https://p11.secure.hostingprod.com/@www.domain.com\/dir/directory/file.ext" This allows the e-mail to successfully send, however the body of the e-mail contains the backslash as well as the frontslash. Any ideas? I have a string (Product1-Product2-Product3#2-4-1) where Product1-Product2-Product3 are products and 2-4-1 are quantities. I am struggling to make a table out of it where products and quantities are shown in rows. here is what i tried. Code: [Select] list($products, $quantities) = explode("#", $specs); //to separate Quantities from products <?php foreach(preg_split("/-/", $products) as $product_list) { ?> <tr> <td> <?php echo $product_list; ?></td><? } ?> <?php foreach(preg_split("/-/", $quantities) as $qtylist) { ?> <td></td> <td><?php echo $qtylist; ?></td> <?php } ?> </tr> <?php //} ?> </table> I know something is wrong with this and its giving me unexpected reasult Please help me create a table out of the above string. Many Thanks -Max Hi group, I need to create a string to be used by base64_encode to build an SVG file. The source for the string is an image I built in memory. Code: [Select] $img = imagecreatetruecolor( 50,50 ); Other stuff, draw circles, test, ect. I currently write it out to disk with: Code: [Select] imagepng( $img, "$Name.png" ); Then read it back in and process it to create an SVG file. I would like to avoid writing it to disk, so how can I create a string for base64_encode from an in memory image?? Thanks for your time. Hi, I am trying to make some adjustments to uploadify.php which comes with the latest version of uploadify (3.0 beta), so that it works with a session variable that stores the login username and adds it to the path for uploads. Here is uploadify.php as it currently looks: Code: [Select] <?php session_name("MyLogin"); session_start(); $targetFolder = '/songs/' . $_SESSION['name']; // Relative to the root if (!empty($_FILES)) { $tempFile = $_FILES['Filedata']['tmp_name']; $targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder; $targetFile = rtrim($targetPath,'/') .'/'. $_FILES['Filedata']['name']; // Validate the file type $fileTypes = array('m4a','mp3','flac','ogg'); // File extensions $fileParts = pathinfo($_FILES['Filedata']['name']); if (in_array($fileParts['extension'],$fileTypes)) { move_uploaded_file($tempFile,$targetFile); echo '1'; } else { echo 'Invalid file type.'; } } echo $targetFolder; ?> I added Code: [Select] echo $targetFolder; at the bottom so that I could make sure that the string returned was correct, and it is, i.e. '/songs/nick'. For some reason though, uploads are not going to the correct folder, i.e. the username folder, but instead are going to the parent folder 'songs'. The folder for username exists, with correct permissions, and when I manually enter Code: [Select] $targetFolder = '/songs/nick';all works fine. Which strikes me as rather strange. I have limited experience of using php, but wonder how if the correct string is returned by the session variable, the upload works differently than with the manually entered string. Any help would be much appreciated. It's the last issue with a website that was due to go live 2 days ago! Thanks, Nick Hey there, Thanks for taking the time to read my thread. My issue is that I can't think of a way to edit a XML file using PHP's XML functionality and then assign the edited contents to a string instead of saving the file. Because my issue is that I have to edit the XML file based upon a string brought from a remote location then give it back to that remote location using a string again, to be exact I am doing it via Linux command line utilizing SSH2. This is what I managed to complete on my own. function CheckIVMPConfig($ServerID) { global $Panel; if(is_numeric($ServerID) && $this->IsValidServer($ServerID)) { // We select the game server that the FTP account was created for. $Servers = mysql_query("SELECT * FROM control_servers WHERE server_id = '".mysql_real_escape_string($FTPAccount['ftp_server'])."'"); $Server = mysql_fetch_array($Servers); // Here we select the Box ID that the game server is on. $Boxs = mysql_query("SELECT * FROM control_machines WHERE machine_id = '".$Server['server_machine']."'"); $Box = mysql_fetch_array($Boxs); // Now we select the required package for the box. $Packages = mysql_query("SELECT * FROM control_packages WHERE package_id = '".$Server['server_package']."'"); $Package = mysql_fetch_array($Packages); // Retrive the file. $Config = $CProtocol->exec("cat /home/{$Server['server_id']}/{$Package['package_config']}"); $Parse = SimpleXMLElement($Config); foreach($Parse as $Entry) // loop through our books { if($Entry->port != $Server['server_port']) { // edit the value } else if($Entry->maxplayers > $Server['server_slots']) { // edit the value } } } } This topic has been moved to PHP Regex. http://www.phpfreaks.com/forums/index.php?topic=326004.0 Hello all, I'm trying to change the end of a javascript call based on the end of the url string. The common part of all the url strings is sobi2Id=, I'm trying to do this with strstr but am having no luck. I'm new to php so my syntax knowledge is terrible! at the moment i've got Code: [Select] <?php $url = $_SERVER['REQUEST_URI']; $tag = strstr ($url, 'sobi2Id='); echo $tag; ?> but this returns an unexpected T_STRING, expecting ',' or ';' Can anyone debug this? I may well be being really silly! Hello PHP freaks,
my codes dont allow me to log-in to Student Home with unique id. It says "Invalid Login or Password"
this is my form
<tr bgcolor="#E1E1E1" class="stylesmall">
<td width="35%" align="left" class="style7 style1">Learner Id : </td>
<td width="65%" align="left"><input name="learner_id" type="text" id="learner_id" action="Student_Home.php" method="post"></td>
</tr>
<tr bgcolor="#E1E1E1" class="stylesmall">
<td align="left" class="style7 style1">Password:</td>
<td align="left"><input name="student_password" type="password" id="student_password"><
/td>
and this is my handler.
<?php
session_start();
include 'Connect.php';
$flag = "";
$learner_id = $_POST['learner_id'];
$student_id = $_POST['student_id'];
$student_password = $_POST['student_password'];
$query = "select last_login_date from student_information where student_id='$student_id' and student_password='$student_password'";
$result = mysql_query($query,$link_id);
if(mysql_error() != null){
die(mysql_error());
}
if($date = mysql_fetch_array($result))
{
$lastdate = $date['last_login_date'];
$date2 = date("d-m-Y h:i A",strtotime($lastdate));
$_SESSION["student_id"] = $_POST["student_id"];
$_SESSION["lastlogin"] =$date2;
$_SESSION["type"] = "Student";
mysql_query("UPDATE student_information SET last_login_date=now() where student_id='$student_id'",$link_id);
if(mysql_error() != null){
die(mysql_error());
}
header("location: Student_Home.php?id={$student_id}");
die();
}
else
{
$flag = "invalid";
header("location:Student_login.php?flag=$flag");
die();
}
?>
PLease help me PHP friends to correct my codes.
I have the following function, which takes a string with commas in it and attempts remove those commas. The way I have it here is that I use explode to take out the commas, which makes an array, and then iterate through that array to put a string back together without the commas. function tags_to_sort_by( $sortMeta ) { $sortByArray = explode(",", $sortMeta); $sortByCount = count($sortByArray); for ($i = 0; $i < $sortByCount; $i++) { $sortByString += $sortByArray[$i]; } return $sortByString; } What does not work is the following line: $sortByString += $sortByArray[$i]; Somehow that outputs a 0, which I don't understand. It should output something like: arrayItem1 arrayItem2 array3 etc. My question is if there either is an easier way to remove the commas from the original string or what I am doing wrong in this line: $sortByString += $sortByArray[$i]; // I am trying to concatenate each part of the array back into the string. Thanks a lot for help with this! hey guys im trying to find a string inside a string which could be made up of different things eg... {$test}, {$test1}, {$test2} etc (but the varable inside could be called anything hence maybe using regex im not sure?) is this possible?...i hope you guys understand....thanks Hey guys. I need to know how to get a time that is constant. What I want to achieve: I need to make a clock on my website showing only one time (HH:MM:SS), wherever the page is requested from. And I need to use this "time" in calculations, like finding the time difference between two time values stored in my MYSQL Databases. I hope that I am clear with my question. Thanks for any help in advance! Hi i'm making a new website based on PHP. I bumped on a problem now... The problem is that I have a loop where i get all records out of my sql database and get them into a form. Every record has a differend form with a button to. Every button then has a unique ID. Now i tried everyting i could think of to get the value out of a button when a button is clicked. But nothing worked... here is the part of the code where everything is for the form and the POST. Code: [Select] while($record = mysql_fetch_object($result)){ $id = $record->id; echo"<form action='home.php' method='post'>"; echo"<b>name:</b>".$record->name." <b>Price: </b>".$record->price.""; echo'<input type="hidden" name="id" value='.$id.'>'; echo"<input type='submit' value='Buy' /><br />"; echo"</form>"; } if($_POST) { $ID = intval($_POST['id']); $query1 = "SELECT price FROM items WHERE id = ".$ID.""; $result1 = mysql_query($query1); list($cost) = mysql_fetch_row($result1); $gold = getStat('gc',$userID); if($gold > $cost) { setStat('gc',$userID,($gold - $cost)); $queryw = "INSERT INTO users_inventory(item_id,user_id, quantity) VALUES ('".$ID."','".$userID."','1')"; $resultw = mysql_query($queryw); } else { echo"You can't afford this weapons."; } } The only thing that doesn't seem to work is this part Code: [Select] $ID = intval($_POST['id']); is always gives me this error: Notice: Undefined index: id in shop.php on line 26 Please help me out here i have no idea what to do from here on... Hi: Not sure if this is where to ask this (maybe it's a mySQL Issue)?? I am working on a zip code locator. The field/column "zip" (which holds the zip codes) is set as a UNIQUE Key in the database. Problem is: I want to allow people to enter a new city if there is one they want to add. The only way I can do this is to remove the UNIQUE Key from the column, or I get an error. Some cities - like Malvern, PA and Frazer, PA - have the same zip code: 19355 This works fine, but the issue that now happens is the zip locator on the frontend will no longer find that zip code. Does anyone know what a solution might be? I can post the zip locator code, and maybe there's a chunk of code I can remove or alter to fix this? Not sure how to address this one. what is the easiest way to get unqiue sub arrays based on date from within my larger array? here is what i mean in detail. I have an array that outputs this... Code: [Select] [0] => Array ( [date] => 2010-11-02 [time] => 7:00 p.m. [location] => Illinois [team1] => [team1sc] => [team2] => [team2sc] => [winner] => Illinois ) [1] => Array ( [date] => 2010-11-02 [time] => 7:15 p.m. [location] => Purdue [team1] => University of Indianapolis [team1sc] => 59 [team2] => Purdue [team2sc] => 82 [winner] => Purdue ) [2] => Array ( [date] => 2010-11-06 [time] => 3:05 p.m. [location] => Southern Illinois [team1] => University of Indianapolis [team1sc] => 58 [team2] => Southern Illinois [team2sc] => 65 [winner] => Southern Illinois ) I don't need value [ 1 ] because value [ 0 ] already has the same date! My goal is to get a list of all the unique [date]s from this entire multidemonsional array. (FYI - I know I will be loosing blocks of arrays that have duplicate dates - THATS OK). But it's a bit of a struggle for me unique array sections out of this...any help or advice would be great! thanks! |
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