[PHP] array, trouble updating
I usually work with cold fusion and took on a little project to get my
feet wet in php and am spinning my wheels. What I thought might be
difficult was easy and what I thought would be a piece of cake has
caused me much grief over the last few days.
I'm making a little shopping basket, writing the results to a file,
ftping the file to a distributor and sending the CC data to merchant
services company.
Write to file - easy
FTP file to distributor - easy
Updating the array in the shopping basket -- not so easy !!??!!
A shopping basket should be able to add and delete items (done)
You should be able to delete the whole basket (done)
Now I need to be able to update quantity - I've spent at least 5 or 6
hours on this and have gotten nowhere!!! This learning exercise is
getting to be a major time drag.
Any hints would be good.
The code is below:
?php
if ($action == empty)
{
while ($ses_basket_items -1)
{
array_splice ($ses_basket_name,
$ses_basket_items, 1);
array_splice ($ses_basket_amount,
$ses_basket_items, 1);
array_splice ($ses_basket_price,
$ses_basket_items, 1);
array_splice ($ses_basket_id,
$ses_basket_items, 1);
$ses_basket_items--;
}
}
if ($action2 == deleteItem)
{
array_splice ($ses_basket_name, $position, 1);
array_splice ($ses_basket_amount, $position, 1);
array_splice ($ses_basket_price, $position, 1);
array_splice ($ses_basket_id, $position, 1);
$ses_basket_items--;
}
?
?php
if ($_GET['basket']!=){
if (session_is_registered('ses_basket_items')){
$basket_position_counter=0;
$double=0;
if ($_SESSION['ses_basket_items']0){
foreach ($_SESSION['ses_basket_name'] as $basket_item){
if ($basket_item==$_GET['basket']){
$double=1;
$subtract=1;
$basket_position=$basket_position_counter;
}
$basket_position_counter++;
}
}
if ($double==1){
$oldamount=$_SESSION['ses_basket_amount'][$basket_position];
$_SESSION['ses_basket_amount'][$basket_position]++;
$amount=$_SESSION['ses_basket_amount'][$basket_position];
$oldprice=$_SESSION['ses_basket_price'][$basket_position];
$newprice=($oldprice/$oldamount)*$amount;
$_SESSION['ses_basket_price'][$basket_position]=$newprice;
}else{
$_SESSION['ses_basket_name'][]=$_GET['basket'];
$_SESSION['ses_basket_amount'][]=1;
$_SESSION['ses_basket_price'][]=$_GET['price'];
$_SESSION['ses_basket_id'][]=$_GET['id'];
$_SESSION['ses_basket_items']++;
}
}else{
$_SESSION['ses_basket_items']=1;
$_SESSION['ses_basket_name'][0]=$_GET['basket'];
$_SESSION['ses_basket_amount'][0]=1;
$_SESSION['ses_basket_price'][0]=$_GET['price'];
$_SESSION['ses_basket_id'][0]=$_GET['id'];
session_register(ses_basket_items);
session_register(ses_basket_name);
session_register(ses_basket_amount);
session_register(ses_basket_price);
session_register(ses_basket_id);
}
}
if ($_SESSION['ses_basket_items']0){
for
($basket_counter=0;$basket_counter$_SESSION['ses_basket_items'];$basket
_counter++){
// basket output
$price=sprintf(%01.2f,$_SESSION['ses_basket_price'][$basket_counter]);
$amount=$_SESSION['ses_basket_amount'][$basket_counter];
$name=$_SESSION['ses_basket_name'][$basket_counter];
$aaa=$basket_counter;
echo $amount $name $price;
echo a href=\2.php?action2=deleteItemposition= . $aaa .
\DEL/a;
echo a
href=\2.php?id=1001price=25basket=mousesubtract=yes\-sub/a;
echo $aaa;
echo BR\n;
}
} else {
$_SESSION['ses_basket_items']=0;
unset($_SESSION['ses_basket_name']);
unset($_SESSION['ses_basket_amount']);
unset($_SESSION['ses_basket_price']);
unset($_SESSION['ses_basket_id']);
}
?
Re: [PHP] array, trouble updating
On Tuesday 17 May 2005 21:18, mayo wrote:
I usually work with cold fusion and took on a little project to get my
feet wet in php and am spinning my wheels. What I thought might be
difficult was easy and what I thought would be a piece of cake has
caused me much grief over the last few days.
It appears that your overall problem is a misunderstanding of how arrays
work in PHP and how easy it is to manipulate them.
First:
if (session_is_registered('ses_basket_items')){
In general, for practical purposes (if PHP is installed using the
recommended default setup, ie register_globals disabled),
session_is_registered() is deprecated and should not be used. Use:
if (isset($_SESSION['ses_basket_items'])) { ... };
Second:
if ($action == empty)
{
while ($ses_basket_items -1)
{
array_splice ($ses_basket_name,
$ses_basket_items, 1);
array_splice ($ses_basket_amount,
$ses_basket_items, 1);
array_splice ($ses_basket_price,
$ses_basket_items, 1);
array_splice ($ses_basket_id,
$ses_basket_items, 1);
$ses_basket_items--;
}
}
You seem to be using multiple single dimension arrays to store your basket
details. That is not the optimal way of doing things. You should have a
*single* multi dimension array, there are many ways to do this, here's a
couple:
1)
$basket[1] = array('name' = 'name of product',
'id' = 'product id',
'price' = 'price of product',
'amount' = 'quantity required');
$basket[2] = array('name' = 'name of product',
'id' = 'product id',
'price' = 'price of product',
'amount' = 'quantity required');
2)
$basket['a_product_id'] = array('name' = 'name of product',
'price' = 'price of product',
'amount' = 'quantity required');
$basket['another_product_id'] = array('name' = 'name of product',
'price' = 'price of product',
'amount' = 'quantity required');
OK, so how do you operate on them? In the examples below 2 forms will be
given corresponding to how you defined the arrays as per above.
To remove an item:
1) unset($basket[n]); // where n is an integer
2) unset($basket['product_id']; // if product_id is an integer
// then you don't need the single-quotes
// note that also applies when first
// define the array, ie:
// $basket[product_id] = array(...);
To change an attribute, eg the amount:
1) $basket[n]['amount'] = 5;
2) $basket['product_id'] = 10;
To display an attribute, eg price:
1) echo $basket[n]['price'];
2) echo $basket['product_id']['price'];
When playing around with arrays, print_r() is your friend, use it
liberally.
--
Jason Wong - Gremlins Associates - www.gremlins.biz
Open Source Software Systems Integrators
* Web Design Hosting * Internet Intranet Applications Development *
--
Search the list archives before you post
http://marc.theaimsgroup.com/?l=php-general
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RE: [PHP] array, trouble updating
Jason,
Thx. Even though I have what I need for the client (I finally got things
to work as desired), I'll rework it and update the client version.
I knew I was doing things poorly and it degenerated into simply get the
damn thing to work.
Thx, Mayo
-Original Message-
From: Jason Wong [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 17, 2005 5:56 PM
To: php-general@lists.php.net
Subject: Re: [PHP] array, trouble updating
On Tuesday 17 May 2005 21:18, mayo wrote:
I usually work with cold fusion and took on a little project to get my
feet wet in php and am spinning my wheels. What I thought might be
difficult was easy and what I thought would be a piece of cake has
caused me much grief over the last few days.
It appears that your overall problem is a misunderstanding of how arrays
work in PHP and how easy it is to manipulate them.
First:
if (session_is_registered('ses_basket_items')){
In general, for practical purposes (if PHP is installed using the
recommended default setup, ie register_globals disabled),
session_is_registered() is deprecated and should not be used. Use:
if (isset($_SESSION['ses_basket_items'])) { ... };
Second:
if ($action == empty)
{
while ($ses_basket_items -1)
{
array_splice ($ses_basket_name,
$ses_basket_items, 1);
array_splice ($ses_basket_amount,
$ses_basket_items, 1);
array_splice ($ses_basket_price,
$ses_basket_items, 1);
array_splice ($ses_basket_id,
$ses_basket_items, 1);
$ses_basket_items--;
}
}
You seem to be using multiple single dimension arrays to store your
basket
details. That is not the optimal way of doing things. You should have a
*single* multi dimension array, there are many ways to do this, here's a
couple:
1)
$basket[1] = array('name' = 'name of product',
'id' = 'product id',
'price' = 'price of product',
'amount' = 'quantity required');
$basket[2] = array('name' = 'name of product',
'id' = 'product id',
'price' = 'price of product',
'amount' = 'quantity required');
2)
$basket['a_product_id'] = array('name' = 'name of product',
'price' = 'price of product',
'amount' = 'quantity required');
$basket['another_product_id'] = array('name' = 'name of product',
'price' = 'price of product',
'amount' = 'quantity
required');
OK, so how do you operate on them? In the examples below 2 forms will be
given corresponding to how you defined the arrays as per above.
To remove an item:
1) unset($basket[n]); // where n is an integer
2) unset($basket['product_id']; // if product_id is an integer
// then you don't need the single-quotes
// note that also applies when first
// define the array, ie:
// $basket[product_id] = array(...);
To change an attribute, eg the amount:
1) $basket[n]['amount'] = 5;
2) $basket['product_id'] = 10;
To display an attribute, eg price:
1) echo $basket[n]['price'];
2) echo $basket['product_id']['price'];
When playing around with arrays, print_r() is your friend, use it
liberally.
--
Jason Wong - Gremlins Associates - www.gremlins.biz
Open Source Software Systems Integrators
* Web Design Hosting * Internet Intranet Applications Development *
--
Search the list archives before you post
http://marc.theaimsgroup.com/?l=php-general
--
New Year Resolution: Ignore top posted posts
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
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To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] array, trouble updating - SOLVED
Yikes,
Who would have thought something so easy would be such a pain in the
butt.
I solved it with embedded if-else clauses.
Thx all
-Original Message-
From: mayo [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 17, 2005 9:19 AM
To: 'php'
Subject: [PHP] array, trouble updating
I usually work with cold fusion and took on a little project to get my
feet wet in php and am spinning my wheels. What I thought might be
difficult was easy and what I thought would be a piece of cake has
caused me much grief over the last few days.
I'm making a little shopping basket, writing the results to a file,
ftping the file to a distributor and sending the CC data to merchant
services company.
Write to file - easy
FTP file to distributor - easy
Updating the array in the shopping basket -- not so easy !!??!!
A shopping basket should be able to add and delete items (done)
You should be able to delete the whole basket (done)
Now I need to be able to update quantity - I've spent at least 5 or 6
hours on this and have gotten nowhere!!! This learning exercise is
getting to be a major time drag.
Any hints would be good.
The code is below:
?php
if ($action == empty)
{
while ($ses_basket_items -1)
{
array_splice ($ses_basket_name,
$ses_basket_items, 1);
array_splice ($ses_basket_amount,
$ses_basket_items, 1);
array_splice ($ses_basket_price,
$ses_basket_items, 1);
array_splice ($ses_basket_id,
$ses_basket_items, 1);
$ses_basket_items--;
}
}
if ($action2 == deleteItem)
{
array_splice ($ses_basket_name, $position, 1);
array_splice ($ses_basket_amount, $position, 1);
array_splice ($ses_basket_price, $position, 1);
array_splice ($ses_basket_id, $position, 1);
$ses_basket_items--;
}
?
?php
if ($_GET['basket']!=){
if (session_is_registered('ses_basket_items')){
$basket_position_counter=0;
$double=0;
if ($_SESSION['ses_basket_items']0){
foreach ($_SESSION['ses_basket_name'] as $basket_item){
if ($basket_item==$_GET['basket']){
$double=1;
$subtract=1;
$basket_position=$basket_position_counter;
}
$basket_position_counter++;
}
}
if ($double==1){
$oldamount=$_SESSION['ses_basket_amount'][$basket_position];
$_SESSION['ses_basket_amount'][$basket_position]++;
$amount=$_SESSION['ses_basket_amount'][$basket_position];
$oldprice=$_SESSION['ses_basket_price'][$basket_position];
$newprice=($oldprice/$oldamount)*$amount;
$_SESSION['ses_basket_price'][$basket_position]=$newprice;
}else{
$_SESSION['ses_basket_name'][]=$_GET['basket'];
$_SESSION['ses_basket_amount'][]=1;
$_SESSION['ses_basket_price'][]=$_GET['price'];
$_SESSION['ses_basket_id'][]=$_GET['id'];
$_SESSION['ses_basket_items']++;
}
}else{
$_SESSION['ses_basket_items']=1;
$_SESSION['ses_basket_name'][0]=$_GET['basket'];
$_SESSION['ses_basket_amount'][0]=1;
$_SESSION['ses_basket_price'][0]=$_GET['price'];
$_SESSION['ses_basket_id'][0]=$_GET['id'];
session_register(ses_basket_items);
session_register(ses_basket_name);
session_register(ses_basket_amount);
session_register(ses_basket_price);
session_register(ses_basket_id);
}
}
if ($_SESSION['ses_basket_items']0){
for
($basket_counter=0;$basket_counter$_SESSION['ses_basket_items'];$basket
_counter++){
// basket output
$price=sprintf(%01.2f,$_SESSION['ses_basket_price'][$basket_counter]);
$amount=$_SESSION['ses_basket_amount'][$basket_counter];
$name=$_SESSION['ses_basket_name'][$basket_counter];
$aaa=$basket_counter;
echo $amount $name $price;
echo a href=\2.php?action2=deleteItemposition= . $aaa .
\DEL/a;
echo a
href=\2.php?id=1001price=25basket=mousesubtract=yes\-sub/a;
echo $aaa;
echo BR\n;
}
} else {
$_SESSION['ses_basket_items']=0;
unset($_SESSION['ses_basket_name']);
unset($_SESSION['ses_basket_amount']);
unset($_SESSION['ses_basket_price']);
unset($_SESSION['ses_basket_id']);
}
?
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