PHP - Could Anyone Give Me Some Exercides / Challenges?

Is it possible to feed the browser a default save as name for the image when outputting to the browser, instead of it defaulting to the .php file name?

So, instead of myimage.php I could use imagename.jpg or whatever I want.

Hi all, I need some help.

My ob_get_contents() is empty and gives me a empty file everytime. I tried different cache script it is still the same.

I have also tried
fwrite($fp, 'hello')

In this case, it successfully writes to the file. But when i use ob_start and ob_get_contents, it will be empty.

can anyone please advice. My simplified script is here

<?php

// Settings
$cachedir = 'cache/'; // Directory to cache files in (keep outside web root)
$cachetime = 600; // Seconds to cache files for
$cacheext = 'html'; // Extension to give cached files (usually cache, htm, txt)

// Ignore List
$ignore_list = array(
'/rss.php',
'/search/'
);

// Script
$page = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; // Requested page
$cachefile = $cachedir . md5($page) . '.' . $cacheext; // Cache file to either load or create

$ignore_page = false;
for ($i = 0; $i < count($ignore_list); $i++) {
$ignore_page = (strpos($page, $ignore_list[$i]) !== false) ? true : $ignore_page;
}

$cachefile_created = ((@file_exists($cachefile)) and ($ignore_page === false)) ? @filemtime($cachefile) : 0;
@clearstatcache();

// Show file from cache if still valid
if (time() - $cachetime < $cachefile_created) {

//ob_start('ob_gzhandler');
@readfile($cachefile);
//ob_end_flush();
exit();

}

// If we're still here, we need to generate a cache file

ob_start();

?>

All My HTML AND PHP CODES TO RUN THE SITE

<?php

// Now the script has run, generate a new cache file
$fp = @fopen($cachefile, 'w');

// save the contents of output buffer to the file
@fwrite($fp, ob_get_contents());
@fclose($fp);

ob_end_flush();

?>

Hi everyone, first thanks for caring to read my post!

I am very very new to php but have a really good idea for a site so thought this could be a good chance to finally learn.

The site is basically going to be a simple yet very well structured and organised repository for articles with the ability for users to post comments at the bottom of each article (logged in users).  The users can also post articles and select which sections they want to put them in.  The admin could then review all submissions and accept and then put them in the order in which they best fit (since the articles will usually be relevant to different stages and should be placed in order of assumed knowledge, if that makes sense) Kind of like a tutorials site with content being submitted.

I imagine a really uncluttered site that looks more old school than web 2.0. From the first page is just like a simple search engine and underneath a kind of sitemap with each topic showing how many articles are in each.  Then as you click into the topic area you are shown another sitemap like display of the articles in this which are perhaps some sectioning to define the type of article it is.

As I say, I am quite new so I wondered if you had some suggestions of the top 'aids' to achieving this, and how you would suggest I progress to get it all setup? Or indeed any frameworks already that fit my needs?

I hope to be active here and look forward to being to give something back some day.

Edit: after reading this through,, I realise I just described a kind of wiki, but thats not really what I had in mind- more just how the old school basic but very clean and functional sites were back in the day (meaning no disrespect to any of the newer ones!).
Thank you for reading.

Alright, this is the code that i cant seem to get working. Its supposed to update the pin_lock field in my database. I have two databases that it needs to read from, the Account database to verify the login, then the Game database to modify the pin_lock field. It comes up that its sucessfully modified the entry but when i check it, its still the same as it was before.

session_start();
if ($_POST["vercode"] != $_SESSION["vercode"] OR $_SESSION["vercode"]=='') 
{ print("<center>Incorrect verification code!"); die(); }
require_once('config.php');
mysql_select_db($accdb);
$accountid=$_POST['accountid'];
$pass=$_POST['pass'];
$email=$_POST["email"];
$idnumber=$_POST["question"];
$phone=$_POST["answer"];
session_start(); 
if(!$_POST["accountid"]) { print("<center>Account ID Field Empty!"); die(); }
if(!$_POST["email"]) { print("<center>E-mail Address Field Empty!"); die(); }
if(!$_POST["question"]) { print("<center>Security Questions Field Empty!"); die(); }
if(!$_POST["answer"]) { print("<center>Answer Field Empty!"); die(); }
if(!ereg("^[0-9a-z]{4,12}$",$accountid)) { print("<center>Account ID Only letters from \"a\" to \"z\" and numbers, lenght of 4 to 12 characters"); die(); }
if(!ereg("^[0-9a-z]{4,14}$",$pass)) { print("<center>Password Only letters from \"a\" to \"z\" and numbers, lenght of 4 to 14 characters"); die(); }
if(!ereg("^[0-9a-zA-Z_]{4,128}$", (strtr($email, Array('@'=>'','.'=>'')))))  { print("<center>E-mail Only letters a to z and special chars @ . are allowed!"); die(); }
if($_POST["pass"]!=$_POST["pass2"]) { print("<center>Passwords do not match!"); die(); }

$ac = mysql_fetch_array(mysql_query(sprintf("SELECT * FROM account WHERE name='$accountid'")));
if (!$ac)
{ print("<center>Account ID does not exist!"); die(); }

$em = mysql_fetch_array(mysql_query(sprintf("SELECT * FROM account WHERE name='$accountid' AND email='$email'")));
if (!$em)
{ print("<center>E-mail is incorrect!"); die(); }

$q = mysql_fetch_array(mysql_query(sprintf("SELECT * FROM account WHERE name='$accountid' AND idnumber='$idnumber'")));
if (!$q)
{ print("<center>Security Question is incorrect!"); die(); }

$an = mysql_fetch_array(mysql_query(sprintf("SELECT * FROM account WHERE name='$accountid' AND phone='$phone'")));
if (!$an)
{ print("<center>Answer is incorrect!"); die(); }
$ac = mysql_fetch_array(mysql_query(sprintf("SELECT * FROM account WHERE name='$accountid'")));
mysql_select_db($gamedb);
$temp["query"] = sprintf("UPDATE cq_user SET lock_key='0' WHERE account_id='$selectedid'");
  if (!mysql_query($temp["query"])) { die(mysql_error()); }
  else { print("<center>You bank pin has been removed!"); }

Any ideas what is wrong with it?

Hello,

I have made a PHP script that will feed an existing XML file. The file stores song details like, title, name of singer etc ...
Now the file structure is like this for the moment:

Code: [Select]
<?xml version="1.0" encoding="UTF-8"?>
<music>
  <song>
    <title>Without me</title>
    <artist>Eminem</artist>
    <url>songs/coreIssues.mp3</url>
    <image>img/den.jpg</image>
    <discspeed>11</discspeed>
  </song></music>
But I need it to be:

Code: [Select]
<?xml version="1.0" encoding="UTF-8"?>
<music>
  <song mainTitle="Eminem - Without me">
    <title>Without me</title>
    <artist>Eminem</artist>
    <url>songs/coreIssues.mp3</url>
    <image>img/den.jpg</image>
    <discspeed>11</discspeed>
  </song></music>
I need it to be like that so if I want to delete a song from the list I just check for the element which will have a unique mainTitle and then delete that element with all it's details.

Now, I've searched on Google for some solutions but didn't find any yet.

Anyone here knows how to do this?

Thanks!

Awhile ago I wrote a simple form to except image specific uploads from users and chmoded the directory to 777... worked great...

Till there was a hack and then I found that chmod 777 is bad

So changed the folder to 775, but now the upload script won't work.

Can somebody point me to a post or article on how to give a file ownership or group permissions so it can safely run its uploads to the folder?

I have tried google but keep getting Linux and Window OS results.. its a tough question to google.

Any help is very much appreciated.

i want the code for review approval platform (costumer reviews for a product  )and in backend editing the code and updating it

is this a good way of doing a simple admin different rights e.g   if secret word then go to adminpage.php


Code: [Select]
session_start();
$captcha = $_POST["captcha"] ;
$secretword = $_SESSION["secretword"] ;

if (strcmp( $captcha, $secretword )) {
  // it's a bot
}
else {
  // matched -- it's a human
}

Please take a look at the following code (this would work if the statement was SELECT instead of UPDATE) But I need to grab the following:

Code: [Select]
$result = mysql_query("UPDATE `AUCTIONS_MAIN` SET Current_Price = Current_Price + '$increase_price', Last_Bidder_Time = '$last_bidder_time' WHERE PId = '$id'");
//grab the new updated current price to save on different bidding history DB
while($row=mysql_fetch_array($result))
{
$current_price = $row['Current_Price'];
    }

As you can see, I need to give the new Current_Price value to the $current_price variable.
Obviously the while function is incorrect,
I would really appreciate any ideas and/or suggestions on how I can grab this value.

PS: I can't make a new query call with a select statement in order to know the new Current_Price. I need the direct updated value coming from the Update Statement, is this possible?

Thanks a lot in advance!!

Hi, sorry for a noob question, but I'm having problem with this small code that doesn't work.

I have secret image path written in php file which must be given to HTML parameter. After this I want to make PHP send file of mime type "audio/mpeg3".

The thing is to hide actual file paths.

Every code is as simple as it can get hopefully. I run these files locally with Firefox and they are located in the same folder: phptest.html, phptest.php, car.jpg.

I have HTML file:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
</head>
<body>
    <p>Image given by .php file:</p>
    <img src="phptest.php?id=1">
</body>
</html>

It's really simple, just look at body tag. The whole phptest.php file:

<?php
$path='';
if ($_GET["id"] === "1"){ //More "if" statements planned
    $path = 'car.jpg';
}

header('Content-Type: image/jpeg'); //Don't need too much headers?

readfile($path);

exit();

?>

PHP is supposed to read file with "id" paramenter. But Somehow this doesn't work.

I'm using the following code. I have tried placing parenthesis around $date1 and $date2 to separate them. No matter where I place the parenthesis  Dreamweaver keeps giving me a syntax error. If I remove the second operator $date2 with the && the error goes.

checked all my books but I can't see what is probably a stupid error !

Code: [Select]
if ($row_sales_shipping_tax['cdate']  >= $date1 && <=$date2 )
Thanks for the help !

Hi all,

I am trying to figure out how to calculate 5 working days prior to a given date.

I have done some googling but can only see examples of how to add 5 working days onto a date, such as this:

Code: [Select]
$holidayList = array();
$j = $i = 1;

while($i <= 5)

{
    $day = strftime("%A",strtotime("+$j day"));
    $tmp = strftime("%d-%m-%Y",strtotime("+$j day"));
    if($day != "Sunday" and $day != "Saturday" and !in_array($tmp, $holidayList))
    {
        $i = $i + 1;
        $j = $j + 1;
    }
    else
        $j = $j + 1;
}
    $j = $j -1;
echo strftime("%A, %d-%m-%Y",strtotime("+$j day"));
Does anyone know how to calculate 5 working days prior to a date?

Many thanks,

Greens85

I want to create an application for sending mails using PHPMailer by placing it on my website

server (using SMTP),
but I can not get object of class phpmailer to change its properties of:

to_name
to_email
ContentType

from default (i.e. null).
Why are the properties keeping default values from the PHPMailer class, and not accepting my

once, though I check values i get from DB and they are good. ContentType is set in a config file.


Here is part of var_dump ($mailer); object of my extended class:
object(MyMailer)#2 (56) { ["priority"]=> int(3) ["to_name"]=> NULL ["to_email"]=> NULL ...
["ContentType"]=> string(10) "text/plain"...

also I get value of ["Port"]=> int(26) but ["SMTP_PORT"]=> int(25).
I need to use smtp port  26.


And here is the extended class of phpmailer

require_once './PHPMailer/class.phpmailer.php';
require_once 'mailer-config.php';

class MyMailer extends PHPMailer
{
    var $priority = 3;
    var $to_name = null;
    var $to_email = null;
    var $From = null;
    var $FromName = null;
    var $Sender = null;
    var $ContentType = null;
   
    function MyMailer()
       {
       global $eSlanje;
       
       // Comes from mailer-config.php $eSlanje array
       
        if($eSlanje['smtp_mode'] == 'enabled')
           {
            $this->Host = $eSlanje['smtp_host'];
            $this->Port = $eSlanje['smtp_port'];
            if($eSlanje['smtp_username'] != '')
               {
                $this->SMTPAuth = true;
                $this->Username = $eSlanje['smtp_username'];
                $this->Password = $eSlanje['smtp_password'];
               }
            $this->Mailer = "smtp";
           }
        if(!$this->From)
           {
            $this->From = $eSlanje['from_email'];
           }          
        if(!$this->FromName)
           {
            $this->FromName = $eSlanje['from_name'];
           }
        if(!$this->Sender)
           {
            $this->Sender = $eSlanje['from_email'];
           }
        $this->Priority = $this->priority;
        //echo "<br>eSlanje[content_type]";
        //var_dump ($eSlanje['content_type']);
       $this->ContentType = $eSlanje['content_type'];   
       }
}

and here is the cofig file:

mailer-config.php

<?php
$eSlanje['from_email'] = "hi@mysite.com";
$eSlanje['from_name'] = "Joe Blog";
$eSlanje['title'] = "hi there";
$eSlanje['content_type'] ="text/html";

$eSlanje['smtp_username'] = null;
$eSlanje['smtp_mode'] = "enabled";
$eSlanje['smtp_port'] = 26;
$eSlanje['smtp_host'] = "mail.mysite.com";



Here is where I insert values of email and name into the object:
<?php session_start();
   include ("password.php");
   require_once 'class_lib/MyMailer.php';
   require "class_lib/MySQL_Database.php";
   require "get_email_template.php";
   
   $db = new MySQL_Database ();
   
   $id = isset($_GET['id']) ?  $_GET['id'] : false;
   $sql = "select email,ime from ".TABLE." where id = $id";
   $query = mysql_query ($sql);
   $toClient = mysql_fetch_array($query);
   
   $to = isset($toClient['email']) ? $toClient['email'] : false;

   var_dump($to); // here I get a valid email address

   $to_name = isset($toClient['ime']) ? $toClient['ime'] : false;

   //var_dump($to_name); // here I get a valid preson's name
   
   $mailer = new MyMailer();
   $mailer->AddAddress($to, $to_name);
   $mailer->Body = get_htmlBody();
   $mailer->AltBody = get_txtBody();
   if(!$mailer->Send())
      {
      echo "<br> Mailer Error: " . $mailer->ErrorInfo."&nbsp";   
      }
      else {
         echo "<br>message not sent &nbsp";
         }
   $mailer->ClearAddresses();
            
   var_dump($mailer); // this is where the object trace comes from
?>   

Hi friends i have latest rss news feed im my php site, i would like to share latest 5 rss feed so some of our partners can publish in thier site . How to do it ?