PHP - Testing The Value Of A Variable Holding An Array.

Hey guys im making a PHP page using PHP

So i have this

#####################################################

#                Make the PHP page                  #

#####################################################

$PHPCode = "

<?php 

//Title of page used to select the correct record from the database

$Title = '".$Name."';

//Use the database information stored in this file

include ($_SERVER['DOCUMENT_ROOT'].'/MySQL/Lighthouses-Database-Connection-Information.php');

//Take the information from the database using the method in this file

include ($_SERVER['DOCUMENT_ROOT'].'/MySQL/Retrieve-Information.php');

//Process the information using the methods in this file

include ($_SERVER['DOCUMENT_ROOT'].'/MySQL/Processing.php');

//Use the layout HTML held in this file

include ($_SERVER['DOCUMENT_ROOT'].'/MySQL/PageCode-Lighthouse-Information-Page.php');

//Display the page code made. Resulting in the page displayed.

echo $pagecode;

?>

";

However, i keep getting syntax errors, possibly due to the fullstops. How shall i get round this?!

Danny

HI - I'm trying to write an expression which tests the existence of a value within a POST variable. I have tried every which way ie isset, empty, ==0.00, NULL and yet I'm doing something wrong as nothing works. I hope you can help this student of PHP !  The expression is testing whether a price per lb exists ie the price of chicken per pound. But some products are not priced this way eg a jar of jam has no $pricelb[$i].  Here's some detail. The expression I am testing is:

Code: [Select]

if (!isset($pricelb[$i])){           // FIRST HALF FAILS
$ordervalue =  $price[$i];
$weight = '0.00';}
else                                       // SECOND HALF WORKS
$pricelb = $pricelb[$i];{
$weight = $weight[$i]; 
$ordervalue = $pricelb * $weight;




The $pricelb[$i] refers to an array of product weights coming off of the array $pricelb =  $_POST['pricelb'] which I then cycle through using a for Loop, hence $pricelb[$i].

Bottom  Line: if there is no pricelb then the then the ordervalue for the purchase is the same as the starting unit price.

Suppose I have 2 products on the order. One with a pricelb of 5 and one with none. Then I do print_r on $_POST['pricelb'] I get: Code: [Select]
Array ( [0] => 5 )  I.E. the second value is absent. YET, if I look into the DB table I see pricelb 0.00 for the second value  - very confusing !


MANY MANY thanks ! for all  your help !





 

Hi.  I am trying to test to see if a particular record id (int) is included in array.

This is the code I am using


                            $sql2 = "SELECT `id` FROM `orderitems` WHERE `orderid` = '" . $orderid . "'";
                            $orderlist = mysql_query($sql2) or trigger_error(mysql_error() . '<br />Query was:' . $sql2);
                            $orderarray = array();
                            while ($orderitem = mysql_fetch_array($orderlist));
                            (
                            $orderarray[] = $orderitem['id'];
                            )
                            $prodid=$row['prodid'];
                            if (in_array($prodid, $orderarray)) {
                                echo "<td> In.</td>";
                            } else {
                                echo "<td> Out.</td>";
                            }


Every case is outputting "Out" even though some should pass.  I have verified that the variables are outputting the correct thing, but am not sure about the array.

I am just a beginner, so i am hoping there is something really obvious I am doing wrong.


Thanks for reading this.

Hi All,

There is a very interesting solved topic here (http://www.phpfreaks.com/forums/index.php?topic=304966.0) about how to access elements in embedded _POST array.

But before accessing an element, it might be appropriate to check whether the array it is supposed to be in exists.

According to the solution given in the topic indicated above, Code: [Select]
$_POST['matType'] is an example of embedded array . Is there a way to check if this array exists?

Thanks in advance for your help.

Hi guys im in the middle of optimizing code..

Code: [Select]
$sql = "SELECT * FROM sa_enemystats WHERE username='$username'";
$res = mysql_query($sql);
while ($row = mysql_fetch_assoc($res)) {

$enemy['current_health'] = $row['current_health'];
$enemy['current_skill'] = $row['current_skill'];
$enemy['level'] = $row['level'];
$enemy['damage'] = $row['damage'];
$enemy['evade'] = $row['evade'];
$enemy['accuracy'] = $row['accuracy'];
$enemy['speed'] = $row['speed'];
$enemy['luck'] = $row['luck'];

echo 'debug: variables synced with db table';
}I know that the setting of these variables are messy  and can be done in a better way... but how? I have tried foreach and copying other's code for an array copy but it lead no where. Then again my syntax could be wrong... I used something like
Code: [Select]
foreach ( $enemy[$value] as $row => $value) {
$enemy[$value] = $row[$value];
}