PHP - Suggestions To Help My Googl'n...php Cache

I've tried to disable caching of HTML for certain pages but they seem to prevent the storing of the php sid cookies. Is there any way to prevent caching and keep cookie?

I did some research on the topic and came across no-cache='set cookie' but the description of that directive seems opposite my need.

Help is a greatly appreciated!

Hi,

I am looking for reliable, effective code to cache one or two of my website webpages. I know there are packages like the pear cache lite but is far beyond my needs and complex in terms of never used pear before etc.

I am looking for a good cache class perhaps or a link to a good cache script. Does anyone have any code they would like to share or know of any good cache classes etc?

I want to keep it relatively simple if possible.

Thanks for any suggestions, help.
PHPLOVER

I need to know when a file was last modified to see if the browser has an updated cached version, if the browser does use its cache otherwise get the most current version.

How can I do this?

I want to set the correct header / cache values for a site.

I am working on a social network / forum style site.

I want to ensure that every page a user requests results in a fresh one being requested from the server as most content changes by the minute.

(1) How would I set this?

(2) Also, can I prevent nav bars being reloaded as these never, ever change.

I have a question about caching files, the way i have seen people do it on tutorials is they save the file to a cache/ folder if non exists,  then check if it exists when the page loads so if it doesn't then load the file normally or if it does then include the cache/file but what is the difference? if the browser has to load the file every time someone goes to it so you cache it for better performance isn't including the cache/file just the exact same thing? the server still has to download the included cached file.

Hi Guys   I have recently been looking into implementing browser caching after reading this: https://developers.g...ctices/caching    There are a few things in that google article that don't make much sense to me so I'm hoping someone can clarify.   Firstly Question   The document says:   " we recommend that you configure your web server to explicitly set caching headers and apply them to all cacheable static resources"   This implies you can set caching headers for just some resources. How would you do this? Lets assume I only wanted to set caching headers for a file styles.css - would I need to output headers within the CSS file and then change the extension to .php? e.g.

<link rel="stylesheet" href="styles.php"/>

Second question   Etags have me very confused. How would you set etag headers for specific files and then generally? And if you set the etag in the header of the main php page does that mean everything gets cached?     Any help someone can provide would be very, very welcome!   Drongo

I've added a js scroller to a client's website, and they are able to edit the scroller text using a php text editor. The script is in a .txt file that is added to the homepage with a php include. Problem is, the edits don't show up right away, sometimes not until next day. I've had the same problem with Flash players (playlists are .txt files), and occassionally with image files, in both IE and FF. Browser continues to use the old file, even if cache is cleared, unless file is renamed. I've cleared cache, confirmed that the old file is gone, deleted the file entirely from the server, rebooted - pretty much everything. Tried onLoad="refresh()", no effect.

Anyone know what causes this, and how to fix it?

How can I delete cache files when any update take place.
I don't need to delete files after certain period of time pass.

I downloaded a script for a poll/voting kinda thing for all my site visitors a while ago and then I tweaked it a bit. It is linked to a database. It grabs the question and possible answers from one database. It also stores user votes, ip addresses, and the date they voted in a database.    I went to change the question and possible answers in my poll by simply changing the options in the Database. This worked fine, but I found a big problem! If you have already voted in the poll, then it displays the results to you every time you visit the site . I assumed this was based off your IP since it is recorded in the database. So logically I thought if you cleared all the IP's in the DB, then the new question would display for every user, but to my alarm it is based off cookies. This is problem because even though I changed the question and options, if people have not cleared their cookies from the last time then the poll still displays the results even though they have not voted on the new question yet. Is there someway to clear everyone cookies or make the poll start fresh for everyone without drastically changing the code and how the entire thing works?
Edited by ryanmetzler3, 24 May 2014 - 09:33 PM.

I have built a small database which use the Twitter API to extract data from the listed members XML files (http://twitter.com/users/show.xml?screen_name=username) and it works well, but since the database makes several calls everytime a page loads I get kicked out very quickly, even with a small memberbase. So I wonder what solution would help with this problem?

I have considered dropping the XML data into the database and saving each XML file on the server, but I am not sure what solution would be best?

what i want is to upload my informations to database when i press the submit button.
but if any field is empty it should show a text that all fields are required but in the same page(up or down to the form).
However with this code my database is not working>informations are not send to the database.
why?Any sggesstions?

Code: [Select]
<?php 
// Start a session for error reporting
session_start();
//Connect to database
require("includes/connect_to_mysql.php");

//check if the button is pressed
if(isset($_POST['submit'])){
// Check to see if the type of file uploaded is a valid image type
function is_valid_type($file)
{
// This is an array that holds all the valid image MIME types
$valid_types = array("image/jpg", "image/jpeg", "image/bmp", "image/gif", "image/png");


if (in_array($file['type'], $valid_types))
return 1;
    return 0;
}
// This variable is the path to the image folder where all the images are going to be stored
// Note that there is a trailing forward slash
$TARGET_PATH = "upload_form_images/";

// Get our POSTed variables
$name = $_POST['name'];
$surname = $_POST['surname'];
$email = $_POST['email'];
$city = $_POST['city'];
$details = $_POST['details'];
$price = $_POST['price'];
$image = $_FILES['image'];

// Sanitize our inputs
$name = mysql_real_escape_string($name);
$surname = mysql_real_escape_string($surname);
$email = mysql_real_escape_string($email);
$city = mysql_real_escape_string($city);
$details = mysql_real_escape_string($details);
$price = mysql_real_escape_string($price);
$image['name'] = mysql_real_escape_string($image['name']);

// Build our target path full string.  This is where the file will be moved do
// i.e.  images/picture.jpg
$TARGET_PATH .= $image['name'];

// Make sure all the fields from the form have inputs
if ( $name == "" || $surname == "" || $email == "" || $city == ""  || $details == "" || $price == ""|| $image['name'] == "" )
{
$_SESSION['error'] = "Te gjithe fushat duhet plotesuar";
echo "Te gjithe fushat duhet plotesuar";
header("Location: upload_form.php");
exit;
}

// Check to make sure that our file is actually an image
// You check the file type instead of the extension because the extension can easily be faked
if (!is_valid_type($image))
{
$_SESSION['error'] = "Fotografite duhet te jene te formateve jpg, jpeg, bmp, gif, ose png";
header("Location: upload_form.php");
exit;
}

// Here we check to see if a file with that name already exists
// You could get past filename problems by appending a timestamp to the filename and then continuing
if (file_exists($TARGET_PATH))
{
$_SESSION['error'] = "Ju lutem nderroni emrin e fotos.";
header("Location: upload_form.php");
exit;
}

/*
// See if that product name is an identical match to another product in the system
$sql = mysql_query("SELECT id FROM upload_form WHERE name='$name' LIMIT 1");
$productMatch = mysql_num_rows($sql); // count the output amount
    if ($productMatch > 0) {
$_SESSION['error'] = 'Ju lutem nderroni emrin sepse egziston ne databaze';
header("Location: upload_form.php");
exit();
}
*/

// Lets attempt to move the file from its temporary directory to its new home
if (move_uploaded_file($image['tmp_name'], $TARGET_PATH))
{
// NOTE: This is where a lot of people make mistakes.
// We are *not* putting the image into the database; we are putting a reference to the file's location on the server
$sql = "insert into people (name, surname, email, city, details, price, filename) values ('$name', '$surname', '$email', '$city', '$details',  '$price', '" . $image['name'] . "')";
$result = mysql_query($sql) or die ("Futja e te dhenave ne databaze DESHTOI: " . mysql_error());
echo "Shtimi i te dhenave u krye me SUKSES";
exit;
}
else
{
// A common cause of file moving failures is because of bad permissions on the directory attempting to be written to
// Make sure you chmod the directory to be writeable
$_SESSION['error'] = "Shtimi i te dhenave NUK u krye me Sukses.  Ju lutem provoni perseri";
header("Location: upload_form.php");
exit;
}
}
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title>Qiraja.com</title>
<link rel="stylesheet" href="css/style.css" type="text/css" media="all" />
<!--[if lte IE 6]><link rel="stylesheet" href="css/ie6.css" type="text/css" media="all" /><![endif]-->
<!--[if IE]><style type="text/css" media="screen"> #navigation ul li a em { top:32px; } </style><![endif]-->


</head>
<body>

<!-- Header -->
<div id="header">
<div class="shell">

<!-- Logo -->
<h1 id="logo"><a href="#">Company Name</a></h1>
<!-- End Logo -->

<!-- Navigation -->
<div id="navigation">

<ul>
    <li><a href="#">Prishtine<span><em></em></span></a></li>
    <li><a href="#">Prizren<span><em></em></span></a></li>
<li><a href="#">Ferizaj<span><em></em></span></a></li>
    <li><a href="#">Peje<span><em></em></span></a></li>
<li><a href="#">Mitrovice<span><em></em></span></a></li>
<li><a href="#">Gjilan<span><em></em></span></a></li>
    <li class="last"><a href="#">Gjakove<span><em></em></span></a></li>

</ul>
</div> 
</div>
</div>


<div id="slider">
<div class="shell">

<!-- Slides -->
<div class="slides">
<ul>
<!-- Slide -->
    <li>
               
               
<form action="upload_form.php" enctype="multipart/form-data" name="myForm" id="myform" method="post">
    <table width="90%" border="0" cellspacing="0" cellpadding="6">
      <tr>
        <td width="20%" align="center">Name</td>
        <td width="80%"><label>
          <input name="name" type="text" id="name" size="25" />
        </label></td>
      </tr>
      <tr>
        <td align="center">Surname</td>
        <td><label>
          <input name="surname" type="text" id="surname" size="25" />
        </label></td>
      </tr>
       <tr>
        <td align="center">Email</td>
        <td><label>
          <input name="email" type="text" id="email" size="25" />
        </label></td>
      </tr>
      <tr>
        <td align="center">City</td>
        <td><select name="city" id="city">
        <option value=""></option>
          <option value="Prishtine">Prishtine</option>
          <option value="Prizren">Prizren</option>
          <option value="Ferizaj">Ferizaj</option>
          <option value="Peje">Peje</option>
          <option value="Mitrovice">Mitrovice</option>
          <option value="Gjilan">Gjilan</option>
          <option value="Gjakove">Gjakove</option>
          </select></td>
      </tr>
      <tr>
        <td align="center">Cmimi</td>
        <td><label>
          <input name="price" type="text" id="price" size="10" />
          &euro;
        </label></td>
      </tr>
      <tr>
        <td align="center">Fotografite</td>
        <td><label>
          <input type="file" name="image" id="image" />
        </label></td>
      </tr>     
      <tr>
        <td>&nbsp;</td>
        <td align="right"><label>
        <input type="hidden" name="MAX_FILE_SIZE" value="100000" />
          <input type="submit" name="submit" id="submit" value="Shto te dhenat" />
        </label></td>
      </tr>
    </table>
    </form>

    </li>
    <!-- End Slide -->
   
    <!-- Slide -->
    <li>
    <div class="slide-info">
    <h2><span>Reklamo</span> Shtepine</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam arcu ligula, faucibus eu imperdiet eu, bibendum sit amet augue. Sed turpis sem, interdum sit amet egestas a, mattis non libero. Suspendisse tristique nisi sed justo accumsan vel mattis nulla fermentum. Etiam varius est id mi fermentum aliquam.</p>
    <p>Quisque quis vestibulum turpis. Sed venenatis ipsum laoreet elit pulvinar vitae pharetra massa dignissim. Curabitur ligula sapien, auctor ut porttitor a, ultricies lobortis dui. Suspendisse lacinia tellus a diam rutrum rhoncus. </p>

<a href="#" class="more">read more</a></p>
    </div>
    <span class="slide-image image1"></span>
    </li>
    <!-- End Slide -->
   
    <!-- Slide -->
    <li>
    <div class="slide-info">
    <h2><span>Reklamo</span> Apartmanin</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam arcu ligula, faucibus eu imperdiet eu, bibendum sit amet augue. Sed turpis sem, interdum sit amet egestas a, mattis non libero. Suspendisse tristique nisi sed justo accumsan vel mattis nulla fermentum. Etiam varius est id mi fermentum aliquam.</p>
    <p>Quisque quis vestibulum turpis. Sed venenatis ipsum laoreet elit pulvinar vitae pharetra massa dignissim. Curabitur ligula sapien, auctor ut porttitor a, ultricies lobortis dui. Suspendisse lacinia tellus a diam rutrum rhoncus. </p>

<a href="#" class="more">read more</a></p>
    </div>
    <span class="slide-image image1"></span>
    </li>
<!-- End Slide -->
   
    </ul>
</div>
<!-- End Slides -->

</div>
</div>
<!-- End Slider -->

<!-- Slider Nav -->
<div id="slider-navigation">
<div class="shell">
<ul>
    <li><a href="index.php" class="active">Kthehu ne fillim<strong>Home</strong><em class="ico1"></em></a></li>
    <li><a href="upload_form.php">Shto<strong>Upload</strong><em class="ico2"></em></a></li>
    <li class="last"><a href="contact_form.php">Kontakti<strong>Contact</strong><em class="ico3"></em></a></li>
</ul>
</div>
</div>
<!-- End Slider Nav -->

<!-- Main -->
<div id="main">
<div class="shell">

<!-- Cols -->
<div class="cols">
<div class="cl">&nbsp;</div>

<!-- Col -->
<div class="col">
<h3>Sed Turpis sem</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam arcu ligula, faucibus eu imperdiet eu, bibendum sit amet augue. Sed turpis sem, interdum sit amet egestas a, mattis non libero.<br /><a href="#" class="more">read more</a></p>
<p>Suspendisse tristique nisi sed justo accumsan vel mattis nulla fermentum. Etiam varius est id mi fermentum aliquam. <br /><a href="#" class="more">read more</a></p>
</div>
<!-- End Col -->

<!-- Col -->
<div class="col">
<h3>Ligula amet augue</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam arcu ligula, faucibus eu imperdiet eu, bibendum sit amet augue. <br /><a href="#" class="more">read more</a></p>
<p>Sed turpis sem, interdum sit amet egestas a, mattis non libero. Suspendisse tristique nisi sed justo accumsan vel mattis nulla fermentum. Etiam varius est id mi fermentum aliquam. <br /><a href="#" class="more">read more</a></p>
</div>
<!-- End Col -->

<!-- Col -->
<div class="col col-last">
<h3>Ligula amet augue</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam arcu ligula, faucibus eu imperdiet eu, bibendum sit amet augue. <br /><a href="#" class="more">read more</a></p>
<p>Sed turpis sem, interdum sit amet egestas a, mattis non libero. Suspendisse tristique nisi sed justo accumsan vel mattis nulla fermentum. Etiam varius est id mi fermentum aliquam. <br /><a href="#" class="more">read more</a></p>
</div>
<!-- End Col -->

<div class="cl">&nbsp;</div>
</div>
<!-- End Cols -->

</div>
</div>


</body>
</html>

Hi

I was playing with a poll, but for some reasons it won't email me(the bottom most part). Where did I go wrong?

Also any suggestions on how to improve this?

Thanks your the best guys!


<?php
include('config.php');
$name = strip_tags($_POST['name']);
$email = $_POST['email'];
$qst_id=strip_tags($_POST['qst_id']);
//if no ajax
$opt = strip_tags($_POST['opt']);
$s_id = $_SERVER['REMOTE_ADDR'];

//validate email 
if (!preg_match('/^.+@.+\..{2,3}$/',$email));
{
$email = 'email was blocked';
}
if (strlen($name) >= 50)
{
$name = 'name was blocked';
}


if ($opt == '')
{
$vote ="no";
}
elseif (($opt=='Yes') || ($opt=='No'))
{
$qt=mysql_query("insert into plus_poll_ans(s_id,qst_id,opt) values('".$s_id."','".$qst_id."','".$opt."')");
}
else
{
$vote = "no";
}

echo "<font size='2' face='Verdana' color='#000000' style='font-size:1.2em;'> Declaration of Faith</font>";

$qst_id=1; // change this to change the poll 

/* Find out the question first */
$fg=mysql_query("select qst from plus_poll where qst_id='".$qst_id."'");
$row=mysql_fetch_object($fg);

echo "<br><b><br>$row->qst</b><br>"; // display the question
/* for percentage calculation we will find out the total number
 of answers ( options submitted ) given by the visitors */
$rt=mysql_num_rows(mysql_query("select ans_id from plus_poll_ans where qst_id='".$qst_id."'"));


/* Find out the answers and display the graph */
$query="select count(*) as no,qst,plus_poll_ans.opt from plus_poll,plus_poll_ans where plus_poll.qst_id=plus_poll_ans.qst_id and plus_poll.qst_id='".$qst_id."' group by opt desc ";
$rs=mysql_query($query);

//count the answers by yes or no
$count= "SELECT opt, count(opt) FROM plus_poll_ans GROUP BY opt desc"; 
$result = mysql_query($count) or die(mysql_error());

//separate the results
while($row = mysql_fetch_array($result)){
$total_opt[] = $row['count(opt)'];
}

// Print out result
echo "<table cellpadding='0' cellspacing='0' border='0' width='100%' >";

$i = 0;
while($noticia = mysql_fetch_array($rs)){
 echo "<tr>
    <td width='5%' bgcolor='#F1F1F1'>&nbsp;<font size='1' face='Verdana' color='#000000'>$noticia[opt]</font></td>";
$width2=$noticia['no'] *10 ; /// change here the multiplicaiton factor //////////
$ct=($noticia[no]/$rt)*100;
$ct=sprintf ("%01.2f", $ct); // number formating 

echo "    <td width='20%' bgcolor='#F1F1F1'>&nbsp;<font size='1' face='Verdana' color='#000000'>($ct %)</font></td><td width='60%' align='left' bgcolor='#F1F1F1'>&nbsp;<img src='graph.jpg' height=10 width=$width2>";
 echo "</td><td width='15%' align='right'>";
 echo "<font size='1' face='Verdana' color='#000000'>".$total_opt[$i];
 echo " votes";
 echo "</font></td>";
 echo  "</tr>";
 echo "<tr>
    <td  bgcolor='#ffffff' colspan=2>"; 
 echo "</td>";
 echo "</tr>";
 $i=$i+1;
}
echo "<tr><td></td><td></td><td><font size='1' face='Verdana' color='#000000'>Total Votes:</font></td><td align='right'>";
//count the total votes
$count = 'select count(ans_id) from plus_poll_ans';
$count = mysql_query($count);
$count = mysql_fetch_array($count);
$total_count = $count['count(ans_id)'];

echo "<font size='1' face='Verdana' color='#000000'>".$total_count." votes</font>";
echo "</td></tr>";
echo "</table>";
echo "</font>";


if ($vote!='no')
{
//email
$to = 'person1@example.com, person2@example.com';
$subject = 'Someone just made a declaration of faith';
$message = "Someone from the ip address ".$s_id;
// Always set content-type when sending HTML email
$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type:text/html;charset=iso-8859-1" . "\r\n";
$headers .= 'From: Vote Detector <website@example.com>'. "\r\n";
if ($name!='')
{
$message = $message." with the name ".$name;
}
if ($email!='')
{
$message = $message." with email ".$email;
}
$message = $message." voted "."yes<br/>";
$message = $message."total number of people who declared their faith: ".$total_count." people<br/>";
$message = $message."with a total of ".$total_opt[0]." people saying yes";
$message = $message." and a total of ".$total_opt[1]." people saying no<br/>";
mail($to, $subject, $message, $headers);
}

?>

I am using php require to input a page of code.  I am including (require) that file several times within the page.  I am guessing that it executes the file every time, and does not save any page loading time, and in fact probably slowing it down because it has to make the request every time.   Just wanted an expert to confirm or deny my educated guess.  Would it be the same if it were including an html file instead of a php file?

<?php require ("$base_path/main_page_rotation/content4.php"); ?>

Code: [Select]
<?php
$img = $_GET['img'];
$wid = $_GET['wid'];
$hei = $_GET['hei'];
$xoff = $_GET['xoff'];
$yoff = $_GET['yoff'];

if($img == 0)
return;

$image = array("HyruleTown","Bosses","ForestNPCs","RoyalFamily","Rings");


header("Content-type: image/png");
$im = imagecreatefrompng($image[$img - 1] . ".png");
$dest = imagecreatetruecolor($wid, $hei);
imagecopy($dest, $im, 0, 0, $xoff, $yoff, $wid, $hei);

imagepng($dest);
imagedestroy($dest);
imagedestroy($im);
?>
This script allows you to take an image and only show parts of it. This script works great, but there's one problem. As I add more and more to a page, it takes longer and longer to load.

http://openzelda.thegaminguniverse.com/wiki/index.php5?title=OZWiki:Alien_Invasion

There will be a lot more php images added soon. I used this method so I don't have to upload a ton of images at once.
So is there a way to speed things up? Is it possible to have it save cache so the images don't reload everytime you refresh the page?

What's the best way to cache things on the server? I've found some SetEnv things but this all seems to be a single key/value.   I'd like to cache an array of things that I can access later. Right now it's cached in $_SESSION which is fine, but still there's overhead on every first-time visitor to a site. Is there a way to add something to $_SERVER or elsewhere that ALL visitors to a website will ultimately be able to access?   I guess I want something like web.config in C#, where the first time a page is visited, the "app starts", as it were, and those things are now in cache on the server.   What's the best way to do this?