PHP - Crazy Maker - Passing Variable To Variables With Quotes

Hello everyone!  This is my first post.  I am very new to php and mysql and coding in general.  It has not been made 100% clear to me as to when I should use single quotes, double quotes, and {}.  From what I gather you use single quotes for literal interpretation...  so if you put something like a variable in single quotes and echoed it, it would literally echo it as it is written and not the value of the variable.  in double quotes, I gather that it will echo the value of the variable.  as for {} I am unclear as to when to use the curly brackets for a variable.  I am assuming if you had a statement in single quotes and you put a variable in curly brackets you would get the value of the variable?
Edited by LazerOrca, 25 November 2014 - 11:20 PM.

Hi First post here. Long time reader!

I'm looking to gauge the general practices of dealing with variables between pages.

I'd always pass my variables through the POST. Im normally always doing a post back and processing the data at the top of the page.

 I never liked the query string as it open to manipulation, but can see its use for a search results page and saving the url.

I came from a ASP background and we would only use session variables for holding user login information as the windows server had a habit of restarting the pool and loosing the session. We didn't want this happening, for example, when doing an e-commerce transaction.  We always felt the post was the most robust method.

Now Im using php and all the great features it has. I was looking to see what the more experience php developers used and am I right sticking to the post method, or is utilising session a more modern way of doing things.

I've a few years experience doing web dev, just thought I touch base on a few issues to make sure I'm still heading in the right direction.

Thanks for any advice guys!

I have the following code that outputs a url. It searches my MySQL database for the name of a given item within a theme:


$relative = 'http://www.domain.com/wp-content/';
$url1= $relative . 'themes/arjuna-x/itemspec.php?type=';
$url2='&item=';

<a class="entry-thumbnails-link" href="<?php echo $url1.'Themes'.$url2.$rowThemes['Theme']; ?>">

The output is as follows:
http://www.domain.com/wp-content/themes/arjuna-x/itemspec.php?type=Themes&item=(insert variable here)

All is good up to this point.

My problem however, is that some items (in this case: theme names) have apostrophes in them. For example: April Fool's.

This results in breaking my php code.

How can I get php to call these variables with apostrophes so that they don't break my php?

The code below is a form the gets information from a database and post it into the appropriate field. I am having a problem with the while loop. All the variables before the while loop work just great and echo out how they should. But everything after the while loop does not work. I know it has something to do with the while loop because when I take the while loop out everything works as it should. Can anyone please help me with this?

  <? $id = $_POST["id"];
  $therapy = $_POST["therapy"];
  db_connect();
  $query=mysql_query("select * from student where student_id = $id") or die ("invalid query");
  $row=mysql_fetch_array($query);

print "<table width='330' border=0 align='center'>
  <form method='POST' action='table.php'>
    <td>*First Name:</td>
    <td>*Last Name:</td>
    <tr>";
?>
      <td width="157"><input size="23" name="first_name" value="<?php echo "$row[first_name]"; ?>" /></td>
      <td width="138"><input type="text" size="23" name="surname" value="<?php echo "$row[surname]"; ?>" /></td>
    </tr>
    <tr>
    <td>Level:</td>
     <td>Therapy:</td>
      
    </tr>
    <tr>
      <td>
      <select name="program_level">
        <option <?php if ($row[program_level]=='1') echo "selected=yes";  ?> value="1">O&A</option>
        <option <?php if ($row[program_level]=='2') echo "selected=yes";  ?> value="2">Student</option>
        <option <?php if ($row[program_level]=='3') echo "selected=yes";  ?> value="3">Supervisor</option>
        <option <?php if ($row[program_level]=='4') echo "selected=yes";  ?> value="4">Manager</option>
        <option <?php if ($row[program_level]=='5') echo "selected=yes";  ?> value="5">Director</option>
        <option <?php if ($row[program_level]=='6') echo "selected=yes";  ?> value="6">Graduate</option>
        </select>
      </td>
            <td>


<!-- Auto drop down for therapist names-->  
         
<? $query2=mysql_query("select * from therapy_info;"); ?>

<select name='therapy'>

<? while ($row=mysql_fetch_assoc($query2)){ ?>

<option value="<? echo "$row[therapy_name]"; ?>"> <? echo "$row[therapy_name]"; } ?> </option>

</select>
 
 <!-- End Auto drop down for therapist names-->



</td> 
   </tr>
    <tr>
      <td>Active:<?php echo "$row[active]"; ?></td>
    </tr>
    <tr>
      <td><select name='active' value='$row[active]'>
        <option <?php if ($row[active]=='1') echo "selected=yes";  ?> value='1'>Active</option>
        <option <?php if ($row[active]=='0') echo "selected=yes";  ?> value='0'>Inactive</option>
        </select>
        </td>
    </tr>
    <?php 
    print "<tr>
      <td><input type='submit' value='Change' name='button' /></td>
      <input type='hidden' name='id' value='$id' />";
  ?>
      <input type='hidden' name='$hardcode_session' />
      <?
 
      
    print "</tr>
  </form>
</table>";

hai everybody....   1. can any one let me know how to pass a variable from view to controller in CodeIgniter... 2. if possible send me a  complete login application...developed by using CodeIgniter....       Thanks & Regards, Shankaar.

Hi,
I'm trying to pass a variable into a URL and apparently I'm doing it wrong

this code is OK
Code: [Select]
$id = $3;
echo '<a href="newPage.php?id=3"></a>
If I use
Code: [Select]
$id = $_GET['id'];
echo $id;
on the newPage.php, I echo 3
whereas, if I do
Code: [Select]
$id = $3;
echo '<a href="newPage.php?id="'.$id.'"></a>
when echo out on the newPage.php it prints out nothing
also, in current url look like this:
Code: [Select]
www.site.com/newPage.php?id=

What am I doing wrong? 

Many thanks

I'm creating this URL to pass variables to use from one Page to another:   http://eg10basketbal...Borgman&team=16     My WP site is seeing the first variable but not the second.  After some searching I've found this suggestion, but it's not working for me:

function add_query_vars_filter( $vars ) {

	$vars[] = "nameFull";
	$vars[] = "team";

	return $vars;
}
add_filter( 'query_vars', 'add_query_vars_filter' );

I tried putting this in the wp-includes/functions.php file of the, but ended up with a fatal error.  I have since added it to my theme's functions.php file. There isn't an error, but it doesn't yield recognition of my second variable.     

I normally don't work with PHP or rather I'm learning as I go..and this is pretty much my last barrier between completing this project. Anyway here are my two files:

http://pastebin.com/aThU3akC - file i want to grab values from and pass to the file below
http://pastebin.com/kTYHr99p - file that is suppose to display the values in $transmessage

Basically I need the variables defined in the first file to be passed and usable in the second and I'm not sure why I can't

I'm a newbie here and to php and Javascript.  So hello all.

I am trying to get a portion of a file name passed from one file (first.php) which displays a MySql table.  One of the fields is a link that is supposed to open a popup window (second.php) and begin playing a mp3 file with the flash media player.

I have everything (almost) working.  The table displays as it should, the link is fine.  However, I can not get the popup to open with the dimensions I asked for.  It opens in a full size new window.  And the mp3 will not play.  I get the message from the player "we are unable to connect...etc  etc".  The file name shows up in the status bar and in the URL window.

In the file first.php, the table displays, the links appear to be active.  when clicked the new window opens, the file names carry over but I can not get the file to play.  The player loads (in file second.php) but I get the message from the player "we are unable to connect...etc  etc".

I suspect it is in the syntax.  I have tried so many combinations I can't list them here and so far I have been unable to find anything on google, etc to answer this.  After almost three days I have resorted to here.  This may not even be the right place for me.  Javascript may be my best bet for all I know.

Can someone please look over what I have and at least point me in the right direction?
Any help is greatly appreciated as this is my first attempt at a website.
Thanks


first.php

Code: [Select]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">


<html>
<head>

<script language="JavaScript">
<!-- Begin
function popUp(URL) {

playwindow=window.open(URL, 'name', 'toolbar=0,scrollbars=1,location=1,statusbar=1,menubar=0,resizable=1,width=350,height=250');
}
// End -->
</script>

<script language="JavaScript">
<!--
function openPlayer(URL) {
player = window.open('player10.php?','width=350,height=275')
}
// End -->
</script>



<?php
$username="myusername";
$password="mypassword";
$database="mydb";


mysql_connect('mydb',$username,$password);
@mysql_select_db($database) or die( "Unable to select database");
$query="SELECT * FROM mytable";
$result=mysql_query($query);

$num=mysql_numrows($result);

mysql_close();
?>


</head>
<body>
<table border="1" cellspacing="2" cellpadding="2">
<tr>
<th><font face="Arial, Helvetica, sans-serif">Listen</font></th>
<th><font face="Arial, Helvetica, sans-serif">f2</font></th>
<th><font face="Arial, Helvetica, sans-serif">f3</font></th>
<th><font face="Arial, Helvetica, sans-serif">f4</font></th>
<th><font face="Arial, Helvetica, sans-serif">f5</font></th>
<th><font face="Arial, Helvetica, sans-serif">f6</font></th>
</tr>

<?php
$i=0;
while ($i < $num) {

$f1=mysql_result($result,$i,"listen");
$f2=mysql_result($result,$i,"field2");
$f3=mysql_result($result,$i,"field3");
$f4=mysql_result($result,$i,"field4");
$f5=mysql_result($result,$i,"field5");
$f6=mysql_result($result,$i,"field6");
?>

<tr>
<td><font face="Arial, Helvetica, sans-serif"><a href="javascript:openPlayer('player10.php?<?php echo $f1?>')">Listen</a></font></td>
<td><font face="Arial, Helvetica, sans-serif"><?php echo $f2; ?></font></td>
<td><font face="Arial, Helvetica, sans-serif"><?php echo $f3; ?></font></td>
<td><font face="Arial, Helvetica, sans-serif"><?php echo $f4; ?></font></td>
<td><font face="Arial, Helvetica, sans-serif"><?php echo $f5; ?></font></td>
<td><font face="Arial, Helvetica, sans-serif"><?php echo $f6; ?></font></td>
</tr>

<?php
$i++;
}
?>
</body>
</html>


SECOND.PHP

Code: [Select]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

     
<head>         
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" >   
  <meta http-equiv="X-UA-Compatible" content="IE=8" >         
  <title>My Title             
  </title>             
  <link rel="shortcut icon" type="image/x-icon" href="/favicon.ico" >         
     

 <script language="JavaScript" type="text/javascript">
<!--
    //
    // Make sure there's some data
    //
if (location.search) {
        //
        // Extract the name of the graphics file
        //
    var mp3_filename = location.search.substring(1)
        //
        // Write the &ltIMG> tag using the name of the graphics
        // file (you may need to adjust the SRC text)
        //
 document.write('<a href="http://mywebsite.com/+mp3_filename">')
    }
//   End  -->
</script>



</head>                 
<body>
 
<object width="400" height="300">
  <param name="movie" value="http://fpdownload.adobe.com/strobe/FlashMediaPlayback.swf">
  </param>
  <param name="flashvars" value="src=http%3A%2F%2Fmywebsite.com%2Faudio%2F+mp3_filename">
  </param>
 
 
  <param name="allowFullScreen" value="true">
  </param>
  <param name="allowscriptaccess" value="always">
  </param>
  <embed src="http://fpdownload.adobe.com/strobe/FlashMediaPlayback.swf" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="400" height="300" flashvars="src=http%3A%2F%2Fmywebsite.com%2Faudio%2F+mp3_filename">
  </embed>
</object>

</body>
 </html>

Hello all,

So I've picked up a PHP book in an attempt to learn it.  The issue I'm having is preventing me from getting any further. 

They have me creating a simple order form, but the data is not passing from the HTML page to the PHP Processing file.  I know there are other ways of doing this that I'm unaware of, but this code is verbatam to what we are isntructed to type within the book itself.  Here is the code

orderform.html:
Code: [Select]
<html>
<body>
<form action="processorder.php" method="post">
<table border="0">
<tr bgcolor="#cccccc">
  <td width="150">Item</td>
  <td width="15">Quantity</td>
</tr>
<tr>
  <td>Tires</td>
  <td align="center"><input type="text" name="tireqty" size="3"
     maxlength="3"></td>
</tr>
<tr>
  <td>Oil</td>
  <td align="center"><input type="text" name="oilqty" size="3" maxlength="3"></td>
</tr>
<tr>
  <td>Spark Plugs</td>
  <td align="center"><input type="text" name="sparkqty" size="3"
     maxlength="3"></td>
</tr>
<tr>
  <td>How did you find Bob's?</td>
  <td><select name="find">
        <option value = "a">I'm a regular customer</option>
        <option value = "b">TV advertising</option>
        <option value = "c">Phone directory</option>
        <option value = "d">Word of mouth</option>
      </select>
  </td>
</tr>
<tr>
  <td colspan="2" align="center"><input type="submit" value="Submit Order"></td>
</tr>
</table>
</form>
</body>
</html>
processorder.php:

<!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>Bobs Auto Parts - Order Results</title>
</head>

<body>
<h1>Bobs Auto Parts</h1>
<h2>Order Results</h2>

<?php

$tireqty = $_post['tireqty'];
$oilqty = $_post['oilqty'];
$sparkqty = $_post['sparkqty'];

echo "<p>Order Processed at ";
echo date('H:i, jS F Y');
echo "</p>";


echo '<p>Your order is as follows: </p>';
echo $tireqty.' tires<br />';
echo $oilqty.' bottles of oil<br />';
echo $sparkqty.' spark plugs<br />';

$totalqty = 0;
$totalamount = 0.00;


define('TIREPRICE', 100);
define('OILPRICE', 10);
define('SPARKPRICE', 4);

?>
</body>
</html>

For some reason the values on the processing form dont show up.  The only text thats displayed is :

Bobs Auto Parts
Order Results

Order Processed at 17:07, 9th January 2011

Your order is as follows:
tires       <----  Should be showing the total quantity ordered
bottles of oil     <----  Should be showing the total quantity ordered
spark plugs    <----  Should be showing the total quantity ordered


Is anyone able to let me know where the error is in this code?  The writers website isnt any help....

Regards,

sapper6fd

Been trying to figure out...how can I delete the first input field box in a series? Under Presentations Requested, I want the delete the first short box.    http://myiwma.org/wo...servation-form/   Lauren

I have some function or method.  Is there a better design patter to implement this?

function myFunction($a=null,$b=null,$c=null,$d=null,$e=null,$f=null,$g=null,$h=null)
{
   //Do a bunch of stuff
}

Maybe the second function?

function myNewFunction($data=array())
{
   $data=array_merge(array('a'=>null,'b'=>null,'c'=>null,'d'=>null,'e'=>null,'f'=>null,'g'=>null,'h'=>null),$array);
   //Do a bunch of stuff
}

Please provide decision making factors why you would use one approach over the other.

Hi there,   I want to pass a input variable from login_success.php which will be sent to sqlprocess.php as the variable 'SQLinput';   sqlprocess.php

$link = mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB");

$query = $_REQUEST['SQLinput']; //You don't need a ; like you do in SQL
$result = mysql_query($query);
$numfields = mysql_num_fields($result);

login_sucess.php

<form action="" method="post"
   <label>
         <span>SQL Input :</span>
         <input type ="text" id="message" name="SQLinput" placeholder="Input SQL"></textarea>
     </label> 
	 <label>
         <span>SQL Output :</span>
         <output id="text" id="SQLoutput" ></input>	

<script type="text/javascript" charset="utf-8"> 
			
		// handles the click event for link 1, sends the query
function getOutput() {
  getRequest(
      'sqlprocess.php', // URL for the PHP file
       drawOutput,  // handle successful request
       drawError    // handle error
  );
  return false;
}  
// handles drawing an error message
function drawError () {
    var container = document.getElementById('output');
    container.innerHTML = 'Bummer: there was an error!';
}
// handles the response, adds the html
function drawOutput(responseText) {
    var container = document.getElementById('output');
    container.innerHTML = responseText;
}
// helper function for cross-browser request object
function getRequest(url, success, error) {
    var req = false;
    try{
        // most browsers
        req = new XMLHttpRequest();
    } catch (e){
        // IE
        try{
            req = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            // try an older version
            try{
                req = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e){
                return false;
            }
        }
    }
    if (!req) return false;
    if (typeof success != 'function') success = function () {};
    if (typeof error!= 'function') error = function () {};
    req.onreadystatechange = function(){
        if(req .readyState == 4){
            return req.status === 200 ? 
                success(req.responseText) : error(req.status)
            ;
        }
    }
    req.open("GET", url, true);
    req.send(null);
    return req;
}
</script>

<a href="#" onclick="return getOutput();"><button type="submit" id="search_btn" value="Submit">Submit</button> </a>
<div id="output">waiting for action</div>		

Prior to the JS code - I was able to peform this action - however the JS code enables me to post the query onto the same page. I would like essentially like to query the database through an input box and output the same result on the same page.   Thanks!  

Is it possible to use PHP variables in a jQuery file that is including in the header of the file? If so, how?