Programming Forums > Web Development and Design > PHP

ktsirig · Dec 16th, 2005, 10:53 AM

Hi all,
I am relatively new in PHP and I have come into a problem, that, I think, is solved by using Javascript

The problem is the following:

I have a form where the user inserts a query, e.g :"Retrieve all tha names of the students".
The next page, which is written in PHP gets the result, e.g: "Nick", "John", "Mary".
What I want to do is to have something like a small box near each name, which the user can tick and then see the student's page for examlpe.
It is sort of a 'select button', and the user can select one or more students to view their pages.

Q1: Is this done with Javascript only or can I use PHP as well?
Q2: Because I don't know anything about Javascript, is there any short code that can do my job easily?

Thanx in advance

MrMan9879 · Dec 16th, 2005, 10:59 AM

Well, I think you mean like a box with a checkmark in it. I don't know PHP, but I do know that you can have a checkbox with simply HTML. You can control what it does with PHP I'm guessing, but to make it, all you need to know is HTML.

(Toggle Plain Text)

<form>
<input type="checkbox" name="Nick">
Nick
<br>
<input type="checkbox" name="John">
John
<br>
<input type="checkbox" name="Mary">
Mary
<br>
</form>

This code will put 3 checkboxes with the words Nick, John and Mary beside them. Again, I don't know PHP, so you might want to wait for someone that does, but I think that you can control what happens when these checkboxes are selected with PHP.

DaWei · Dec 16th, 2005, 11:02 AM

It's hard to tell precisely what you realize. When you look at a page with PHP and HTML and Javascript intermixed, you are not looking at interactivity; you are looking at plans for constructing a page which will ultimately be sent to the client. The connection will then be dropped. It is a stateless protocol working in a request/response paradigm.

Any information you want to manipulate with Javascript (client-side JS, anyway) has to reside on the client. It may be present in a .js file or explicit inside of script tags or generated on the client. If you want information in the page that reflects the contents of PHP variables, then you have to put it there by one mechanism or another.

Quite often a new request is sent to the server which loads a new page, or reloads the existing page, with the expanded information. Sometimes the full set of information is conveyed in the original page, but hidden until some client-side action is taken. There are also ways of making ancilliary requests without reloading the entire page.

drifter · Dec 17th, 2005, 10:01 AM

You'll have to modify this, since this is for an online game we created for class.
But using checkboxes, this is a start on how you can grab just the ones checked and place them on a new page.

(Toggle Plain Text)

<script language="javascript" type="text/javascript">
// global variable to track the number of checkboxes that are checked
var checkCount = 0

// increment or decrement the checkbox counter
function validate(checkbox)
{
	if (checkbox.checked)
	{
		checkCount++
	}
	else
	{
		checkCount--
	}
}

// check that only 1 to 5 characters are checked before posting the form
function submitIt()
{
	if (checkCount > 5 || checkCount < 1)
	{
		alert ("Limit of 5 characters per party.")
	}
	
	return (checkCount <= 5 && checkCount > 0)
}

</script>

*Edited* actually this is for disbanding party members, so you might have to adjust it more than I thought.

Keep in mind you actually have to have your html form call this function.
I can't really give you much more than that, but perhaps there is someone that can help you figure it out with this tidbit of information.

If it helps you at all, you can actually generate PHP script using Javascript for dynamic updates.
Not too sure how you would do that with PHP, or if you can, I am fairly fimilar with PHP, but by no means a guru. lol

DaWei · Dec 17th, 2005, 10:07 AM

Quote:

generate PHP script using Javascript

Please elucidate as to means and application.

drifter · Dec 17th, 2005, 10:24 AM

Quote:

Originally Posted by DaWei
Please elucidate as to means and application.

Well in our case we used it to update statistics based on a choosen class for our game. (Str, Sta, Dex, etc...)

(Toggle Plain Text)

<script type="text/javascript" language="javascript">

strength = new Array;
vitality = new Array;
dexterity = new Array;
agility = new Array;
intelligence = new Array;
wisdom = new Array;

<?php
$sql = "SELECT ID, strength, vitality, dexterity, agility, intelligence, wisdom FROM Class";
$result = @mysql_query($sql,$db)or die(mysql_error());

while ($row = mysql_fetch_array($result))
{
	echo "strength[" . $row['ID'] . "] = " . $row['strength'] . ";\n";
	echo "vitality[" . $row['ID'] . "] = " . $row['vitality'] . ";\n";
	echo "dexterity[" . $row['ID'] . "] = " . $row['dexterity'] . ";\n";
	echo "agility[" . $row['ID'] . "] = " . $row['agility'] . ";\n";
	echo "intelligence[" . $row['ID'] . "] = " . $row['intelligence'] . ";\n";
	echo "wisdom[" . $row['ID'] . "] = " . $row['wisdom'] . ";\n";
}
?>

function updateStats()
{
	document.getElementById("strength").innerHTML = strength[document.charCreate.charClass.selectedIndex + 1];
	document.getElementById("vitality").innerHTML = vitality[document.charCreate.charClass.selectedIndex + 1];
	document.getElementById("dexterity").innerHTML = dexterity[document.charCreate.charClass.selectedIndex + 1];
	document.getElementById("agility").innerHTML = agility[document.charCreate.charClass.selectedIndex + 1];
	document.getElementById("intelligence").innerHTML = intelligence[document.charCreate.charClass.selectedIndex + 1];
	document.getElementById("wisdom").innerHTML = wisdom[document.charCreate.charClass.selectedIndex + 1];
}

</script>

I have to correct that, meaning you can place PHP code within a javascript tag, lol.

Mocker · Dec 17th, 2005, 10:52 AM

That would be generating Javascript using php

You CAN generate php using javascript if you really wanted, but not on the same page, you'd have to write the php to another file then request that file

drifter · Dec 17th, 2005, 10:57 AM

eh?
pfft.
LOL
Yea, I am backwards today.
Not much sleep.

Although that last bit is good to know.

DaWei · Dec 17th, 2005, 11:01 AM

Quote:

pfft.

Indeed.

Dec 16th, 2005, 10:53 AM	#1
ktsirig Programmer Join Date: Oct 2005 Posts: 54 Rep Power: 4	PHP + Javascript(?) Hi all, I am relatively new in PHP and I have come into a problem, that, I think, is solved by using Javascript The problem is the following: I have a form where the user inserts a query, e.g :"Retrieve all tha names of the students". The next page, which is written in PHP gets the result, e.g: "Nick", "John", "Mary". What I want to do is to have something like a small box near each name, which the user can tick and then see the student's page for examlpe. It is sort of a 'select button', and the user can select one or more students to view their pages. Q1: Is this done with Javascript only or can I use PHP as well? Q2: Because I don't know anything about Javascript, is there any short code that can do my job easily? Thanx in advance

Dec 16th, 2005, 10:59 AM	#2
MrMan9879 Programmer Join Date: Sep 2005 Location: Nanaimo, BC, Canada Posts: 97 Rep Power: 0	Well, I think you mean like a box with a checkmark in it. I don't know PHP, but I do know that you can have a checkbox with simply HTML. You can control what it does with PHP I'm guessing, but to make it, all you need to know is HTML. (Toggle Plain Text) <form> <input type="checkbox" name="Nick"> Nick <br> <input type="checkbox" name="John"> John <br> <input type="checkbox" name="Mary"> Mary <br> </form> <form> <input type="checkbox" name="Nick"> Nick <br> <input type="checkbox" name="John"> John <br> <input type="checkbox" name="Mary"> Mary <br> </form> This code will put 3 checkboxes with the words Nick, John and Mary beside them. Again, I don't know PHP, so you might want to wait for someone that does, but I think that you can control what happens when these checkboxes are selected with PHP.

Dec 16th, 2005, 11:02 AM	#3
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	It's hard to tell precisely what you realize. When you look at a page with PHP and HTML and Javascript intermixed, you are not looking at interactivity; you are looking at plans for constructing a page which will ultimately be sent to the client. The connection will then be dropped. It is a stateless protocol working in a request/response paradigm. Any information you want to manipulate with Javascript (client-side JS, anyway) has to reside on the client. It may be present in a .js file or explicit inside of script tags or generated on the client. If you want information in the page that reflects the contents of PHP variables, then you have to put it there by one mechanism or another. Quite often a new request is sent to the server which loads a new page, or reloads the existing page, with the expanded information. Sometimes the full set of information is conveyed in the original page, but hidden until some client-side action is taken. There are also ways of making ancilliary requests without reloading the entire page. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Dec 17th, 2005, 10:01 AM	#4
drifter Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia Posts: 39 Rep Power: 0	You'll have to modify this, since this is for an online game we created for class. But using checkboxes, this is a start on how you can grab just the ones checked and place them on a new page. (Toggle Plain Text) <script language="javascript" type="text/javascript"> // global variable to track the number of checkboxes that are checked var checkCount = 0 // increment or decrement the checkbox counter function validate(checkbox) { if (checkbox.checked) { checkCount++ } else { checkCount-- } } // check that only 1 to 5 characters are checked before posting the form function submitIt() { if (checkCount > 5 \|\| checkCount < 1) { alert ("Limit of 5 characters per party.") } return (checkCount <= 5 && checkCount > 0) } </script> <script language="javascript" type="text/javascript"> // global variable to track the number of checkboxes that are checked var checkCount = 0 // increment or decrement the checkbox counter function validate(checkbox) { if (checkbox.checked) { checkCount++ } else { checkCount-- } } // check that only 1 to 5 characters are checked before posting the form function submitIt() { if (checkCount > 5 \|\| checkCount < 1) { alert ("Limit of 5 characters per party.") } return (checkCount <= 5 && checkCount > 0) } </script> Edited actually this is for disbanding party members, so you might have to adjust it more than I thought. Keep in mind you actually have to have your html form call this function. I can't really give you much more than that, but perhaps there is someone that can help you figure it out with this tidbit of information. If it helps you at all, you can actually generate PHP script using Javascript for dynamic updates. Not too sure how you would do that with PHP, or if you can, I am fairly fimilar with PHP, but by no means a guru. lol __________________ Only two things are infinite, the universe and human stupidity, and im not sure about the former.

Dec 17th, 2005, 10:52 AM	#7
Mocker Hobbyist Programmer Join Date: Oct 2005 Location: Indiana Posts: 218 Rep Power: 0	That would be generating Javascript using php You CAN generate php using javascript if you really wanted, but not on the same page, you'd have to write the php to another file then request that file __________________ #programmingforums relay - http://thegupstudio.com/cgi-bin/pforelay.cgi freelance scripts - http://ryanguthrie.com/index.html

Dec 17th, 2005, 10:57 AM	#8
drifter Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia Posts: 39 Rep Power: 0	eh? pfft. LOL Yea, I am backwards today. Not much sleep. Although that last bit is good to know. __________________ Only two things are infinite, the universe and human stupidity, and im not sure about the former.

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Programming Forums > Web Development and Design > PHP

PHP + Javascript(?)