Is it possible to create a "Select All" check-box in a PHP program without using Javascript?:rolleyes:
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Is it possible to create a "Select All" check-box in a PHP program without using Javascript?:rolleyes:
PHP operates on the server. I have no idea what you mean by a "Select All" check-box, but I'm guessing no. Only Javascript can interact with the user when the webpage is active.
You could use PHP to generate a checkbox (the HTML element) and even add some Javascript commands to it, but the PHP itself won't create any sort of "selecting" action.
What about adding an additional checkbox labeled "all"?
If "all" is selected along with any other checkboxes the "all" checkbox will override the other checked off boxes.
I am not entirely sure this is what you are looking for though.
Hi james
I didn't get what you said.Can you please write the code?
p.s.: What I mean is that I want to create 5 checkboxes beside 5 files . Then there show be a a checkbox below the 5 files called "Select All" ,which one being selected ,selects /checks the 5 checkboxes. Hope you all get me now
Unfortunately you would need javascript.
It's a very simple script to make. Here's a working example:
HTML Code:<!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>
<!-- Page Title -->
<title>Select All Checkboxes Example</title>
<!-- Meta Block -->
<meta content="text/html; charset=iso-8859-1" http-equiv="content-type" />
<meta content="Select All Checkboxes Example" name="description" />
<meta content="Select All, Checkboxes, Example" name="keywords" />
<meta content="all,index,follow" name="robots" />
<meta content="noodp" name="msnbot" />
<meta content="global" name="distribution" />
<!-- Javascript Scripts -->
<script type="text/javascript">
//<![CDATA[
function selectAllFiles(c) {
for (i = 1; i <= 5; i++) {
document.getElementById('chkFile' + i).checked = c;
}
}
//]]>
</script>
</head>
<body>
<div id="page">
<p>
<input id="chkFile1" type="checkbox" title="File 1" />File 1</p>
<p>
<input id="chkFile2" type="checkbox" title="File 2" />File 2</p>
<p>
<input id="chkFile3" type="checkbox" title="File 3" />File 3</p>
<p>
<input id="chkFile4" type="checkbox" title="File 4" />File 4</p>
<p>
<input id="chkFile5" type="checkbox" title="File 5" />File 5</p>
<p>
<input id="chkAllFiles" type="checkbox" title="All Files" onchange="selectAllFiles(this.checked);" />All
Files</p>
</div>
</body>
</html>
If you don't mind reloading the page, you could have a button on it that would check all. It would be the submit button of a separate form that would get or post to the page itself data telling it to render all the boxes as checked. You could also have a check none button that would also be a separate form and work in a similar manner.
But any other data would have to be preserved somehow. If there were no other data or if all other data was already in session and not subject to change on that page, that would be fine. Otherwise, it wouldn't work well without javascript anyway.
What's the big problem with javascript? You can use it, and if there's none available on the user's end, you can make the check all checkbox unavailable.
Here's a working version in PHP.
default.php:
PHP Code:<?php
function checked() {
if(isset($_POST['chkAllFiles'])) {
return 'checked="checked" ';
}
else
{
return '';
}
}
?>
<!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>
<!-- Page Title -->
<title>Select All Checkboxes Example</title>
<!-- Meta Block -->
<meta content="text/html; charset=iso-8859-1" http-equiv="content-type" />
<meta content="Select All Checkboxes Example" name="description" />
<meta content="Select All, Checkboxes, Example" name="keywords" />
<meta content="all,index,follow" name="robots" />
<meta content="noodp" name="msnbot" />
<meta content="global" name="distribution" />
</head>
<body>
<div id="page">
<form action="default.php" method="post">
<p>
<input name="chkFile[]" type="checkbox" title="File 1" <?php echo checked(); ?>/>File 1</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 2" <?php echo checked(); ?>/>File 2</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 3" <?php echo checked(); ?>/>File 3</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 4" <?php echo checked(); ?>/>File 4</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 5" <?php echo checked(); ?>/>File 5</p>
<p>
<input name="chkAllFiles" type="checkbox" title="All Files" <?php echo checked(); ?> />
<input name="btnGo" type="submit" value="All Files" /></p>
</form>
</div>
</body>
</html>
Yes, but now the form is virtually useless for any other purpose.
This will do sort of the same thing, and when it's done, including optionally changing one or more checkboxes after checking them all or clearing them all, the actual form may be submitted to another page (processing.php in this example):
But there's still the problem of, what about other data if any in the main form? If there is any, like -say, username - that won't survive the reloads that check and uncheck the boxes unless it's in and drawn from the session and cannot be changed on this form.PHP Code:<?php
$checked = isset($_POST['chkAllFiles'])? 'checked' : '';
?>
<!DOCTYPE html>
<html>
<head>
<!-- Page Title -->
<title>Select All Checkboxes Example</title>
<!-- Meta Block -->
<meta content="text/html; charset=utf-8" http-equiv="content-type" />
<meta content="Select All Checkboxes Example" name="description" />
<meta content="Select All, Checkboxes, Example" name="keywords" />
</head>
<body>
<div id="page">
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input name="chkAllFiles" type="submit" value="All Files"/>
</form>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input name="unchkAllFiles" type="submit" value="No Files"/>
</form>
<form action="processing.php" method="post">
<p>
<input name="chkFile[]" type="checkbox" title="File 1" <?php echo $checked; ?>/>File 1</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 2" <?php echo $checked; ?>/>File 2</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 3" <?php echo $checked; ?>/>File 3</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 4" <?php echo $checked; ?>/>File 4</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 5" <?php echo $checked; ?>/>File 5</p>
<p>
<input type="submit" value="Submit" /></p>
</form>
</div>
</body>
</html>
So there's no options in PHP for AutoPostBack, like in ASP.NET? Or anyrunat:"server"equivalent?
This is possible in ASP.NET without using Javascript, but the OP was asking specifically for PHP.
If you can use ASP.NET, you can do this without using JavaScript, as it has AutoPostBack features added in.
default.aspx:
default.aspx.vb:HTML Code:<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!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>
<!-- Page Title -->
<title>Select All Checkboxes Example</title>
<!-- Meta Block -->
<meta content="text/html; charset=iso-8859-1" http-equiv="content-type" />
<meta content="Select All Checkboxes Example" name="description" />
<meta content="Select All, Checkboxes, Example" name="keywords" />
<meta content="all,index,follow" name="robots" />
<meta content="noodp" name="msnbot" />
<meta content="global" name="distribution" />
</head>
<body>
<form id="Form1" runat="server">
<asp:ScriptManager ID="AJAXHandler" runat="server" EnablePartialRendering="true">
</asp:ScriptManager>
<div id="page">
<asp:UpdatePanel ID="AjaxForm" runat="server">
<ContentTemplate>
<asp:CheckBoxList ID="chkFiles" runat="server">
<asp:ListItem Text="File 1" />
<asp:ListItem Text="File 2" />
<asp:ListItem Text="File 3" />
<asp:ListItem Text="File 4" />
<asp:ListItem Text="File 5" />
</asp:CheckBoxList>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="chkAllFiles" EventName="CheckedChanged" />
</Triggers>
</asp:UpdatePanel>
<asp:CheckBox ID="chkAllFiles" Text="All Files" runat="server" AutoPostBack="true" />
</div>
</form>
</body>
</html>
Code:Option Explicit On
Option Strict On
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub chkAllFiles_CheckedChanged(sender As Object, e As System.EventArgs) Handles chkAllFiles.CheckedChanged
For Each chk As ListItem In chkFiles.Items
chk.Selected = chkAllFiles.Checked
Next
End Sub
End Class
I hope you don't mind ApacheTech, I undeleted your post with code for ASP.NET because I think all options should be on the table.
But no, as far as I know PHP cannot do anything like that.
In the absence of server side code that can really handle this, like you say ASP.NET can, I think javascript is the right way to do this. It's a convenience to be able to check all/uncheck all. If javascript is unavailable, then the user is only mildly inconvenienced. About 99% of users have javascript enabled anyway.
If using javascript, you can have javascript create the check all/uncheck all checkbox. Non-javascript users won't even know what they're missing.
Or looking at it the other way, you could hard code it and have it disabled. If javascript is present, use javascript to enable it. You could even have a small subtext stating:
"Javascript required for this feature"
right by the disabled checkbox. If javascript is present, have it remove that subtext at the same time it enables the checkbox.
No, I don't mind. I deleted it because the OP was asking for PHP specific, I re-read it after posting. I thought they were just asking for "without using javascript".
Really, the ASP.NET way is cheating slightly. TheScriptManagerthat makes the AJAX work is a catalog of Javascripts which are run at the server. But, because they are run on the server rather than client-side, even if the client has disabled Javascript for some mind-boggling reason, it will still render correctly.
I still don't understand why you would need to try and support browsers that have Javascript disabled. Hel, even my washing machine can run Java code! Chances are, if a user has Javascript disabled, they are used to not being able to use 90% of the features of the websites they visit.
The one other way you could do this, which hasn't been mentioned (beyond moving to python, ruby on rails, or perl) is to set it up as a flash applet. But chances are, if someone is as hypochondriac to internet security enough to disable their javascript, they will almost definitely have flash disabled as well.
Your best bet is forget the 0.02% of internet users who don't have javascript enabled, add the extra 8 lines of code from my first example and please the 99.98% of users. Those 0.02% will just have to suffer, like they are used to on every website they visit.
OMG is this a virus? Whenever I am clicking on the folder that contains the above program given by apachetech it is opening this file!! How is that possible when the folder has other files too? :mad:
I wrote the above program and saved it in a folder which also contains other php programs,but when I am trying to open the folder through localhost in my Firefox 12 browser it is directly opening the above program without letting me to chose other files!!PHP Code:<?php
function checked() {
if(isset($_POST['chkAllFiles'])) {
return 'checked="checked" ';
}
else
{
return '';
}
}
?>
<!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>
<!-- Page Title -->
<title>Select All Checkboxes Example</title>
<!-- Meta Block -->
<meta content="text/html; charset=iso-8859-1" http-equiv="content-type" />
<meta content="Select All Checkboxes Example" name="description" />
<meta content="Select All, Checkboxes, Example" name="keywords" />
<meta content="all,index,follow" name="robots" />
<meta content="noodp" name="msnbot" />
<meta content="global" name="distribution" />
</head>
<body>
<div id="page">
<form action="default.php" method="post">
<p>
<input name="chkFile[]" type="checkbox" title="File 1" <?php echo checked(); ?>/>File 1</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 2" <?php echo checked(); ?>/>File 2</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 3" <?php echo checked(); ?>/>File 3</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 4" <?php echo checked(); ?>/>File 4</p>
<p>
<input name="chkFile[]" type="checkbox" title="File 5" <?php echo checked(); ?>/>File 5</p>
<p>
<input name="chkAllFiles" type="checkbox" title="All Files" <?php echo checked(); ?> />
<input name="btnGo" type="submit" value="All Files" /></p>
</form>
</div>
</body>
</html>
This is another added problem. Pls tell me what to do to correct this?
For the time being I have thrown it out of my webspace(outside my htdocs folder) ,but I am terrified with the thought that it may be tracking my every activities. I never expected such a virus-filled program/help from the senior coders of this forum. :(
Is the above program some spyware or virus?:eek:
No, it's definitely not a virus. Are you saving the file as index or index.*? Try renaming it, there maybe some odd htaccess indexing function you're unaware of.
Hmmm..... It's Definately not a virus, but I agree with Nile, on live web servers, when you type in just the folders nome on the URL, it will automatically open the index. Maybe the same kind of thing is happening with your local host?
Bernie
oh ok will check. thanks
The filename as given in ApacheTech's post is:
default.php
Now this varies by how a localhost or server is setup, but often if there are no other files in the folder named:
index.*
or:
home.*
Then default.* is the file that will open.
Rename it to demo.php and the 'problem' should disappear. However, be sure to also change:
to:Quote:
Code:<form action="default.php" method="post">
Code:<form action="demo.php" method="post">
Please let me assure you that I would never (intentionally) place any malicious code on these forums. There are plenty of forums I use for that, lol. This forum is for serious questions and answers about various aspects of Web Development.Quote:
Originally Posted by megha
I hope you do not think that any member of this forum would intentionally post any code that would damage or otherwise interrupt your machine.
As has been stated, your problem is that this file has (intentionally) been named as a standard default document. Default Documents are the files that open with yo load the directory in a web browser. This is why you only need to typewww.example.cominto your browser rather thanwww.example.com/default.phpevery time you wished to visit it. Otherwise, every website's files would be available for everyone to view... then you really would get viruses! :p
I hope this, and the last few posts, have put your mind at ease.
Just as a side note, I think a virus would be aiming for more then st opening when you open the folder in the local host :pQuote:
OMG is this a virus? Whenever I am clicking on the folder that contains the above program given by apachetech it is opening this file!!
I've been playing around with $_SERVER( "APPDATA") . "/Mozilla/Firefox/Profiles/########.default/signons.sqlite. If I was going to make a "virus", it'd email that file to an undisclosed address along with a few other files in that directory. Then compile the php script as an exe file and stick it onto a U3 Sandisk USB Drive... homemade USB Switchblade ftw!
I am no longer opening any attachments by you apache :pQuote:
Originally Posted by ApacheTech
Haha, don't worry, PHP doesn't work like that. I play around with the grey hat stuff because part of my degree is about ethical hacking. Nothing to worry about on here though. But, really, you shouldn't open any .exe file that a relative stranger sends you online, so you're right to be cautious. :D
Point taken, but ethical hacking? As in defining the difference between a white hat and a grey hat hacker? It sounds like ethics just got more fun :)Quote:
Originally Posted by ApacheTech
Without crossing the line... what's $_SERVER( "APPDATA") . "/Mozilla/Firefox/Profiles/########.default/signons.sqlite even do???
And that keyboard, is where a mystical force called google comes into play.Quote:
Originally Posted by keyboard1333
I've been busy for a couple days, so I didn't have time to check the forum. Getting back to the original question, there actually IS a way to do this using just PHP. But it won't be pretty.
The Select All checkbox can trigger PHP to assume all other checkboxes were checked. If (select all), then (assume all checkboxes=files are checked).
That's fine and not even very hard (assuming you can figure out which list of files was generated on the page). But it won't be nice for the user--
Only Javascript can actually display it as checking the other checkboxes. So you can "silently"* select all with another checkbox and PHP only. But you can't display this to the user. (Aside from reloading the page/submitting the form, as others pointed out.)
(*silent as in "silent alarm"-- nothing changes visibly, but then something has been changed on the server.)
Javascript is the answer here. And with a PHP backup (a "silent Select All") if you want.
oh yeah, original question.
I definitely think that javascript is the way to go here, it's definitely the quickest and easiest way to do this.
Just curious dcr33, is there any reason you can't use javascript (assignment, troublesome customer), or do you just not want to? This would definetely be a lot easier with javascript, but not impossible without...
@bernie1227:
I'll carry this conversation on in PM if you wish, save clogging the forum with tangents. To conclude for the lurkers though, rather than stop mid conversation; ethical hacking is white hat, cracking is black hat and hacking usually is grey or black. It's vague though. Ethical hacking is all about information security, computer forensics and penetration testing.
@djr33:
Would this be like a hidden input tag with values of all the checkboxes, which is sent with the form regardless of which are selected. When the form is being processed by the php in the following form, if chkAllFiles is checked, you use the data from the hidden input rather than the checked files list?
You could make this slightly more "pretty" by adding a button/link saying "or, select all files and continue." This way, at least the user knows they'll be redirected. Although, this may mean using a "checkout" style form if otherr information is needed.
Right, the Select All value would override all other values in your PHP (or ASP, whatever) while processing it.
Javascript can change a page while the user looks at it. Nothing else can (unless you want to use Flash, etc.). So the best metaphor I have is the following: send a paper letter to someone asking for information. If you can do it in that, then you can later process the response in PHP.
So imagine a wedding invitation that asks for food choices:
[]chicken []fish []steak []Select All
If "Select All" is checked, then assume they want chicken, fish and steak. Ignore the values of those first three checkboxes. That could be done by the wedding planner, or by PHP.
My method doesn't involve redirecting. It involves an overriding option. Imagine they checkbox says "Select All below and skip past this section".Quote:
You could make this slightly more "pretty" by adding a button/link saying "or, select all files and continue." This way, at least the user knows they'll be redirected. Although, this may mean using a "checkout" style form if otherr information is needed.
Sure, you could that, and it would be fine. But that would require that there is nothing else to submit on the page-- something John has addressed several times here and is a big problem if there is other data on the page. You can't submit half of a form easily, at least not without redesigning the form.