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PHP - Making A Page Refresh Based On Server Timer
Hi,
i dont know how to explain this so ill start with what i want to do. Id like to create a simple text based game in php for learning purposes but im stuck on 1 thing, making a page refresh based on a server timer. Basically every 2 minutes is a server tick and at such time your character gets +gold based on resources etc. im just not sure what such a thing would be called so i havnt been able to google it, obviously the ticks need to be server controlled so a user cant just refresh a page to get a new tick. i would also need the page to display how long left till next tick. the only way i can see it possible is to have a server side application controlling timers, and the php page requests time remaining or something. Any help would be muchly appreciated, thanks. Similar TutorialsWhen it comes to php im still no expert, and when it comes to date/time within PHP my brain melts... what i want is a countdown timer in php that echos how long left is on a timer. i will set the timer for 60 minutes. and i want it to countdown in minutes (no need to display hours, seconds etc...) everytime the user refreshes the page the coundown will obivously refresh. how can i code this or anyone have any handy links to point me in the right direction. Thanks Hello, I'm working on a very simple strategy based game site (mainly to expand my knowledge). What I basically want it to do is, you send a solider to an area which takes, say 20 seconds. After 20 seconds, he battles for 30 seconds, and then arrived back home which takes another 20 seconds. All the user is going to be seeing is a 'status' echo'ed text saying "Arriving in 00:??", "Battle Over in 00:??", and "Home in 00:??". So its just using a time counter. But what makes it more complicated, is that I want the time progress to be saved (datebase), so say I have to wait 50 seconds, I can sign off, go on another computer, sign in and still see my timer going down according to the time that has just passed. So, what I've done so far is, have 4 variables: $realTime - Holds the actual time in seconds. $waitingTime - Holds how long I need to wait. (this is stored in my DB) $differenceTime - Difference between real time and my waiting time. (loaded from my DB) $soliderProgress - Progress of the solider, so: Arriving, Battle ... (stored on DB) Code: [Select] $realTime = date("s"); //soliderProgress is 'Starting' by default if(soliderProgress == "Starting"){ //solider is moving to area $differenceTime = $realTime + $waitingTime; $SQL = ("UPDATE users SET differenceTime='$differenceTime' WHERE username='$username'"); soliderProgress = "Arriving"; $SQL = ("UPDATE users SET soliderProgress='$soliderProgress' WHERE username='$username'"); } if(soliderProgress == "Arriving"){ echo "Arriving to area"; if($realTime >= $differenceTime){ //timer is complete soliderProgress = "Battle"; $SQL = ("UPDATE users SET soliderProgress='$soliderProgress' WHERE username='$username'"); } } This kind of works, but sometimes my $differenceTime is higher than 60 which messes it up, and also the timer isn't live ... so I have to keep refreshing the page Hey all! In the code in question I echo out individual records of data from MySQL successfully. For each record there is a number which is used as a var in the javascript that does the count-down-timer part. However when I view the resulting page the timer works dynamically only with the first record. With the rest, the timer is static. Code: [Select] <? $result0 = mysql_query("SELECT * FROM table WHERE field='$value'"); while ($riw0 = mysql_fetch_assoc($result0)) { $seconds1 = $riw0['seconds'] ; //// echo out data and set variable for the number of seconds to count down ?> <script language="JavaScript"> var countDownInterval=<?=$seconds1?>; var c_reloadwidth=200 </script> <ilayer id="c_reload" width=&{c_reloadwidth}; ><layer id="c_reload2" width=&{c_reloadwidth}; left=0 top=0></layer></ilayer> <script> var countDownTime=countDownInterval+1; function countDown(){ countDownTime--; if (countDownTime <=0){ countDownTime=countDownInterval; clearTimeout(counter) window.location.href="military3.php" //Redirection URL return } var mins = Math.floor(countDownTime/60) var secs = countDownTime-(mins*60) if (document.all) //if IE 4+ document.all.countDownText.innerText = mins+" minutes "+secs+ " "; else if (document.getElementById) //else if NS6+ document.getElementById("countDownText").innerHTML=mins+" minutes "+secs+ " " else if (document.layers){ document.c_reload.document.c_reload2.document.write('Soldiers will be ready in... <span id="countDownText">'+countDownTime+' </span> seconds') document.c_reload.document.c_reload2.document.close() } counter=setTimeout("countDown()", 1000); } function startit(){ if (document.all||document.getElementById) document.write('Soldiers will be ready in <span id="countDownText">'+countDownTime+' </span> seconds') countDown() } if (document.all||document.getElementById) startit() else window.onload=startit </script> <? } ?> I tried replacing the javascript vars with PHP echoes for unique variables, but then no timer shows up, even static. So could anyone advice me on how I could use this code to apply for all MySQL records? Thanks in advance, Thauwa P.S. If I am unclear with my quandary, do let me know. Thank you. Hello. I want to make a web-based rpg with mysql and php but need alot of help, I tryed once and failed. Please msn me: cginbarrhaven@hotmail.com I need LOTS of help. Im stuck! Zeroth I'm new to this form and php/mysql so sorry if this isn't the right place to post this. This is what is in the first dropdown box. Code: [Select] $selValues['john'] = "a, b, c, d, e"; These are the different lists I want it to put in the second drop down box depending on what they choose in the first. Code: [Select] $selValues['list1']= " a1, a2, a3, a4, a5"; $selValues['list2']= " b1, b2, b3, b4, b5"; This is how I made an attempt to make it work before posting here. Along with plently of other ways. Code: [Select] if ($selValues['john']=a) { $chan_input = selectBuilder($selValues['$list1'] }; else if ($selValues['john']=b) { $chan_input = selectBuilder($selValues['$list2'] }; Basicly how I need it to work is there are two drop down boxes. First they will chose between a,b,c,d,e. If they chose a then on the second drop down box I only want them to be able to select a1,a2,a3,a4,a5. Newbie PHP user here, so go easy on me . I've been trying to make a timer that starts on an arbitrary number of seconds, say 10 for example, then counts down to 0 (and refreshes itself every second for the user to see how much time is remaining), and then some more code is executed when 0 is reached. I attempted to do something like: <?php $goal = time() + 10; while($goal - time() >= 0) { echo "$goal - time()"; sleep(1); } ?> This didn't seem to work as my page just took a while to load - I suspect it was going through the entire while loop before displaying anything rather than just dynamically updating the timer every second. Also when I chose 100 instead of 10, the webpage didn't seem to even finish loading. Also it displayed a lot of odd text - not a timer at all! Help would be much appreciated ! This topic has been moved to HTML Help. http://www.phpfreaks.com/forums/index.php?topic=323045.0 i am creating a responsive website.
I'll give you an example.
I am retriving 100 items from mysql database using php. I am only showing 20 items per page using simple pagination with arrows. I keep this format on desktop and tablets. However, I would like to show less items when I am viewing the page on a smartphone. So instead of 20 items per page, it'll show 5 items per page along with the pagination arrows.
I was wondering if this is possible with PHP or would I have to use javascript?
i have already echoed title and included that file in my php script, a header file.... but now i want to refresh my php script if the comment has been successfully added else remain in the same page....it remains in the same page now with just a msg that the comment is added....but i cant see the comment unless i refresh the page... i get he headers already sent error when i put a header() there as i have included another php file which already echoes title to screen....so what do i do now? i want the comment to be displayed to the user once he clicks on save and not make it tedious for him to refresh....any suggestions?any way around? After I submit form data how can I force the page to refresh so I can see the changes take effect? I know this is probably a very basic question. I'm having trouble getting my script to refresh the page. If the username, password match it falls into this if statement. Sometimes it works and other times and won't refresh the page automatically. I'm trying to use this line to refresh the page Code: [Select] echo "<meta http-equiv='refresh' content='=2;index.php' />"; Here is the if statement Code: [Select] if(mysql_num_rows($checklogin) == 1) { // store the row returned from query $row = mysql_fetch_array($checklogin); // get email address from row returned $email = $row['EmailAddress']; // store user variables in session array $_SESSION['Username'] = $username; $_SESSION['EmailAddress'] = $email; $_SESSION['LoggedIn'] = 1; // boolean echo "<h1>Success</h1>"; echo "<p>We are now redirecting you to the member area.</p>"; echo "<meta http-equiv='refresh' content='=2;index.php' />"; } here is the entire index.php file Code: [Select] <?php include "base.php";?> <!-- base.php contains session_start() --> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>User Management System (Tom Cameron for NetTuts)</title> <link rel="stylesheet" href="style.css" type="text/css" /> </head> <body> <div id="main"> <?php // check if user is already logged in if(!empty($_SESSION['LoggedIn']) && !empty($_SESSION['Username'])) { ?> <h1>Pitch Shark Member Area</h1> <p>Thanks for logging in! You are <b><?=$_SESSION['Username']?><b> and your email address is <b><?=$_SESSION['EmailAddress']?></b>.</p> <ul> <!-- link that runs logout.php script --> <li><a href="logout.php">Logout.</a></li> </ul> <?php } // check login form elseif(!empty($_POST['username']) && !empty($_POST['password'])) { // strip away malicious code $username = mysql_real_escape_string($_POST['username']); // encrypt password $password = md5(mysql_real_escape_string($_POST['password'])); // return all matches to username and password $checklogin = mysql_query("SELECT * FROM haas12_test.users WHERE Username = '".$username."' AND Password = '".$password."'"); // if there is a match if(mysql_num_rows($checklogin) == 1) { // store the row returned from query $row = mysql_fetch_array($checklogin); // get email address from row returned $email = $row['EmailAddress']; // store user variables in session array $_SESSION['Username'] = $username; $_SESSION['EmailAddress'] = $email; $_SESSION['LoggedIn'] = 1; // boolean echo "<h1>Success</h1>"; echo "<p>We are now redirecting you to the member area.</p>"; echo "<meta http-equiv='refresh' content='=2;index.php' />"; } // if there information entered could not be found else { echo "<h1>Error</h1>"; echo "<p>Sorry, your account could not be found. Please <a href=\"index.php\">click here to try again</a>.</p>"; } } // display login form with link to register form else { ?> <h1>Member Login</h1> <p>Thanks for visiting! Please either login below, or <a href="register.php">click here to register</a>.</p> <form method="post" action="index.php" name="loginform" id="loginform"> <fieldset> <label for="username">Username:</label><input type="text" name="username" id="username" /><br /> <label for="password">Password:</label><input type="password" name="password" id="password" /><br /> <input type="submit" name="login" id="login" value="Login" /> </fieldset> </form> <?php } ?> </div> </body> </html> Hey guys! Merry Christmas!!!! Here's my problem. I have a script where I use the code include("pagerefresh.php"); where pagerefresh.php is <?php $page = $_SERVER['PHP_SELF']; $sec = "0"; header("Refresh: $sec; url=$page"); ?> I use the include function several times on the page and everything's cool with it. But once I put this: <html> <head> <title>Title</title> <script type="text/javascript"> <?php some mysql function include("timecounter.js"); ?> </script> </head> in the page, the following error pops out whenever I use some of the form functions in the page. I read the php.net manuals and discovered that the include part should come before Code: [Select] Warning: Cannot modify header information - headers already sent by (output started at D:\Hosting\rrr\html\rrr\rrr\rrr.php:191) in D:\Hosting\rrr\html\rrr\rrr\pagerefresh.php on line 4 Oh, and I also put the javascript code directly into the page, without the include function, the same results pop out. :/ . Though I suspect that it is immaterial here, the javascript code is: Code: [Select] var month = '<?php echo "$cmonth"; ?>'; // 1 through 12 or '*' within the next month, '0' for the current month m var day = '<?php echo "$cday"; ?>'; // day of month or + day offset d var dow = 0; // day of week sun=1 sat=7 or 0 for whatever day it falls on var hour = '<?php echo "$chour"; ?>'; // 0 through 23 for the hour of the day H var min = '<?php echo "$cminute"; ?>'; // 0 through 59 for minutes after the hour i var tz = -7; // offset in hours from UTC to your timezone var lab = 'cd'; // id of the entry on the page where the counter is to be inserted function start() {displayCountdown(setCountdown(month,day,hour,min,tz),lab);} loaded(lab,start); // Countdown Javascript // copyright 20th April 2005, 1st November 2009 by Stephen Chapman // permission to use this Javascript on your web page is granted // provided that all of the code in this script (including these // comments) is used without any alteration // you may change the start function if required var pageLoaded = 0; window.onload = function() {pageLoaded = 1;} function loaded(i,f) {if (document.getElementById && document.getElementById(i) != null) f(); else if (!pageLoaded) setTimeout('loaded(\''+i+'\','+f+')',100); } function setCountdown(month,day,hour,min,tz) {var m = month; if (month=='*') m = 0; var c = setC(m,day,hour,tz); if (month == '*' && c < 0) c = setC('*',day,hour,tz); return c;} function setC(month,day,hour,tz) {var toDate = new Date();if (day.substr(0,1) == '+') {var day1 = parseInt(day.substr(1));toDate.setDate(toDate.getDate()+day1);} else{toDate.setDate(day);}if (month == '*')toDate.setMonth(toDate.getMonth() + 1);else if (month > 0) { if (month <= toDate.getMonth())toDate.setFullYear(toDate.getFullYear() + 1);toDate.setMonth(month-1);} if (dow >0) toDate.setDate(toDate.getDate()+(dow-1-toDate.getDay())%7); toDate.setHours(hour);toDate.setMinutes(min-(tz*60));toDate.setSeconds(0);var fromDate = new Date();fromDate.setMinutes(fromDate.getMinutes() + fromDate.getTimezoneOffset());var diffDate = new Date(0);diffDate.setMilliseconds(toDate - fromDate);return Math.floor(diffDate.valueOf()/1000);} function displayCountdown(countdn,cd) {if (countdn < 0) document.getElementById(cd).innerHTML = "Building Completed"; else {var secs = countdn % 60; if (secs < 10) secs = '0'+secs;var countdn1 = (countdn - secs) / 60;var mins = countdn1 % 60; if (mins < 10) mins = '0'+mins;countdn1 = (countdn1 - mins) / 60;var hours = countdn1 % 24;var days = (countdn1 - hours) / 24;document.getElementById(cd).innerHTML = days+' days and '+hours+' : '+mins+' : '+secs;setTimeout('displayCountdown('+(countdn-1)+',\''+cd+'\');',999);}} Thanks in advance. And Merry Christmas!!!!! Thauwa anyone know how to get rid of an echo when you hit refresh on the browser? My browser is remembering the echo from with in a if statement when refresh is hit even if the if statement remains false on refresh. I would like the page orderform.php to reload or refresh to normal after I click this link: this is what i have and this link is on a different page though... if($myError==true) echo "<br /><br />Click here to <a href='orderform.php?nocache='.time().'>go back...</a>"; else header("location: orderform.php"); Hi All, I was wondering if there is any way that a PHP page can update itself when a row in a DB is added or updated? I am trying to get a feed up and running and want it to update when a row is updated/inserted. Thanks Matt Hi everyone, Im using the code below to insert an item to auction, then calculate and display the time remaining until the auction ends. As soon as the confirm auction submit button is clicked, the item appears at auction straight away, however the time remaining is 0s, i have to refresh the page in order to get the end time to appear correctly. Does anybody know why this is happening and what i can do to get the correct end time to appear straight away? Thanks <?php if ($_POST['confirm_auction']) { foreach ($_POST['checkbox'] as $checked) { $add_auction_query = mysql_query("SELECT * FROM offers WHERE seller='$username' AND buyer='$buyer' AND item='$checked'"); while ($row = mysql_fetch_assoc($add_auction_query)) { $starting_bid = $row['offer']; $current_bid = $starting_bid; $start_date = date("Y-m-d H:i:s"); $end_date = date("Y-m-d H:i:s", strtotime("+1 week")); mysql_query("INSERT INTO auctions VALUES ('','$checked','$username','$starting_bid','$current_bid','$buyer','1','At Auction','$start_date','$end_date')"); mysql_query("INSERT INTO bids VALUES('','$checked','$username','$buyer','$starting_bid','$start_date')"); mysql_query("UPDATE offers SET seller_status='At Auction',buyer_status='At Auction' WHERE item='$checked'"); } echo "Offer(s) Sent to Auction"; } } $x = 0; while ($auction_row = mysql_fetch_assoc($auction_query)) { $then = strtotime($auction_row['end_date']); $now = time(); $diff = $then - $now; $weeks = floor($diff / (60*60*24*7)); $diff = $diff - ($weeks * (60*60*24*7)); $days = floor($diff / (60*60*24)); $diff = $diff - ($days * (60*60*24)); $hours = floor($diff / (60*60)); $diff = $diff - ($hours * (60*60)); $minutes = floor($diff / 60); $diff = $diff - ($minutes * 60); $seconds = $diff; ?> <html> <table> <tr> <td> <?php if ($week > 0) {echo $weeks . "w ";} if ($days > 0) { echo $days . "d ";} if ($hours > 0) {echo $hours . "h ";} if ($minutes > 0) { echo $minutes . "m ";} if ($hours < 1) {echo $seconds . "s";} ?> </td> </tr> </table> </html> <?php $x++; } ?> Okey, after hours and hours of googling...all i found was some snippet that works so far that it displays the success and error message, however doesn't do any queries. Basically, what i need is this: I have a textarea where a user submits he's status a.k.a what he's doing, but then the page refreshes (you know, the oldschool plain php/html). However, I know this is doable via jQuery / Ajax ... all i need is a proper code that actually works. I have an issue with refreshing pages on the website. I have a simple code using php to login to the website fill in a form and exit. The code works fine and adds the enterd data correctly in the table in MySql. I have another link where the user can retrieve the recods to update any fields after logging in. The problem I encountered was that the retreving records page does not show the newly added records until the page is refreshed on the server. Whenever the new record does not show, I just open the php code page save without making any changes to the code (just to enforce new time stamp), upload the page to the server only when I do that the new record shows. I would appreciate any help to solve this problem and not having to upload the page to get it to work. Thanks, MB Is it possible to refresh parent page before header() So let say i have 2 page, and 1st page is parent page and the other is pop up window Assume that there is an execution of certain script at the pop up window and it redirected to another page and redirected back again to that page As certain data being displayed in both pop up window and parent page..so i wish to have parent page being refreshed once pop up window execute header() is that possible?? Hi, I have a form with a submit button (Delete button). after I click the button I do few changes in database. Problem is that in this form, after the submit made, it still shows me old data that deleted.... So, I guess I need somehow to make a page refresh through a GET method. How do I do this? Thank u! |
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