php tips, php codes, php articles
if you are taking a warning such as;
Notice: Use of undefined constant _HC_PKG_THEME – assumed ‘_HC_PKG_THEME’ in ~\phpcoin\config.php on line 141
Notice: Use of undefined constant DIR – assumed ‘DIR’ in ~\phpcoin\config.php on line 146
Notice: Use of undefined constant _HC_PKG_LANG – assumed ‘_HC_PKG_LANG’ in ~\phpcoin\config.php on line 153
find this in php.ini
error_reporting = E_A
and change with
error_reporting = E_ALL & ~E_NOTICE
than restart apache.
Tags: error, Php, undefined constant
I needed a function to get (learn) url with php.
Here are the codes.
<?php
function curPageURL() {
$pageURL = ‘http’;
if ($_SERVER["HTTPS"] == “on”) {$pageURL .= “s”;}
$pageURL .= “://”;
if ($_SERVER["SERVER_PORT"] != “80″) {
$pageURL .= $_SERVER["SERVER_NAME"].”:”.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
} else {
$pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
}
return $pageURL;
}
?>
To use this function write
<? echo curPageURL(); ?>
Tags: current page url, get, page url, Php
To add a array with a array, you can use array_combine(),but to use this function arrays size must be same.
for example:
$array1=array(1,4,5,6);
$array2=array(A,K,M,P);
$array3= array_combine($array1,$array2);
//array3 will be
$array3=
array(
[1]=>A,
[4]=>K,
[5]=>M,
[6]=>P,
)for more information you can visit php.net/array_combine
Tags: adding two array, arrays, array_combine, functions
I found two model two make to make category system with unlimited category one oft them is Tree traversal, and other is Adjacency list model.
I will use adjacency list model because it is more understandable than tree traversal. In tree traversal model , insterting and editing categories is unclear , also this model is for bigger database. However, i advice you to look up Tree traversal’s logic, i liked it 
.
Let’s start with creating database;
–
– Tablo döküm verisi `category`
–
INSERT INTO `category` (`id`, `name`, `top_id`) VALUES
(1, ‘Computer’, 0),
(2, ‘Laptop’, 1),
(3, ‘Asus’, 2),
(4, ‘Phones’, 0);
We want to make sth like this:
-Computer
— PCS
——Laptop
———Asus
-Phone
We use functions that call itself named recursive functions.
while($select = mysql_fetch_assoc($sql))
{
$this->x = $this->x.str_repeat(‘_’, $space).$select['name'].’-'; // making a list with all categories names. we add "_" to in front of category name. It adds degree of category times. For example asus deggre is 2 therefore it will be __asus, pda’s degree is one therefore it will be _pda
$this->x = $this->cat($select['id'], ($space+1), $this->x); // function calls itself, with this, it finds subcategory of a category.
}
return $this->x; // This is list of all categories. Each category is separating with "-", be careful this is not an array , this is a string
}
function get_cat($cat_id)
{
$list = $this->cat($cat_tid);
$arr = explode(‘-’, $list); // making array with categories
unset($arr[count($arr-1]);// deleting last element of array, because it is a blank
return $arr // return a array;
}
}
To use it
I wrote this to show you how you can make a category system with unlimited subcategory. If my codes don’t woking fine, please
inform.
Tags: category system, Php, recursiveadjacency list model, unlimited subcategory
While i was talking to mehmet ,he mentioned about php frameworks. I heard somethings about them but not realy knew what they do.
After some research i found codeigniter. Codeignter is an open source php framework. You can use it to make faster, easier web applications. Also it has rich php library. To understand how it works , you can watch video tutorial of Codeigniter from here
This code gets all information from your database table named category
To get last 2 data i used only this code:
Codeigniter makes up a form for your database tables to instert your data, you don’t have to write any mysql, and html code
i hope you like it
Tags: code igniter, codeigniter, framework, Php
mysql_insert_id() is a very usefull function..
what does it do ?
it returns id generated from previous insert query.
Could you give some example ?
!: to use mysql_insert_id your cloumn should be an auto_increment cloumn
Tags: functions, mysql, mysql_insert_id, Php
Q. How do I change MySQL root password under Linux, FreeBSD, OpenBSD and UNIX like operating system over ssh / telnet session?
A. Setting up mysql password is one of the essential tasks. root user is MySQL admin account. Please note that Linux / UNIX login root account for your operating system and MySQL root are different. They are separate and nothing to do with each other (indeed some admin removes root account and setup admin as mysql super user).
mysqladmin command to change root password
Tags: change, mysql, mysql password, password, reset
Difference between include and require: if you use include and there is not page that you include , you get a warning. Otherwise if you use require instead of include you will get a fatal error.
for more information
http://tr2.php.net/include/
http://tr2.php.net/require
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