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PHP - Loop Declaring Class Variables
I'm looking for a more efficient way of declaring variables within a class. What I normally use is a class which is actually a database object. Every time I make a new table in my database I make a new class and new attributes to match the fields in the db table. Looks something like this:
Code: [Select] protected static $table_name="myTable"; protected static $db_fields=array('id', 'name', 'address', 'tel_number', 'fax_number'); public $name; public $address; public $tel_number; public $fax_number; //etc. etc. At the moment I am manually adding the attribute, everytime I add a field to the db table. I'm guessing there should be a way to loop through the $db_fields array and add an attribute in the loop? Can anyone help me with the syntax for this. Is there also a way that I don't have to list the fields everytime in $db_fields....can $db_fields not just look at the relevant db table and pull out the field names in some kind of clever method? Similar TutorialsHi, I need to be able to call a class based on variables. E.G. I would normally do: Code: [Select] $action = new pattern1() but i would like to be able to do it dynamicaly: Code: [Select] $patNum = 1; $action = new pattern.$patNum.() Im wondering if that's possible? If so what would the correct syntax be? Many Thanks. I am getting the following error: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /Library/WebServer/Dev/classtest/lib/class_userdata.php on line 5 on this class code: Code: [Select] class userdata { public $name = ""; public $city = ""; public $phone = ""; function setData($n, $c, $p) { $name = $n; $city = $c; $phone = $p; } function getData() { $userdata=array('name'=>$name, 'city'=>$city, 'phone'=>$phone); return $userdata; } } I thought that was a proper way to set up some class variables. (http://www.victorchen.info/accessing-php-class-variables-and-functions/). Thanks. I think I need to use $this, but I need to be able to add the two values returned from both of my functions. How would I do that? Code: [Select] public function get_users_edge($uid) { $users_primary->get_users_primary_edge($uid); $users_dynamic->get_users_dynamic_edge($uid); echo $users_primary + $users_dynamic; } Does anyone know if it's possible to call a class with an arbitrary number of variables? I'll explain what I mean. Here is my class construct definition: Code: [Select] function __construct($file, $outFile = 'newpdf.pdf', $fontSize = 70, $alpha=0.6, $overlayMsg = 'N O T F O R S H O P', $degrees = 45) { I know that I have to pass over the $file variable for it to work now. But can I create the class passing just the $file var and the $overlayMsg var? Everything else I would want to leave as default. How would I do that? Thanks Mike I keep running into a bunch of error when I declare the page variable in my model. What syntax do I need to use throughout the class? Code: [Select] <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Header_Model extends CI_Model{ var $page = substr(end(explode(DIRECTORY_SEPARATOR, $_SERVER['PHP_SELF'])), 0, -4); function get_page_name() { $this->load->library('common'); $page_names = $this->common->page_names(); $title = (array_key_exists($page, $page_names) !== false) ? $page_names[$page]: ''; if (array_key_exists($page, $page_names) !== false) { $title .= " | Jason Biondo"; } return $title; } function get_js_page_file() { if (file_exists("./assets/js/pages/${page}.js")) { $javascript = "<script type=\"text/javascript\" src=\"./js/pages/${page}.js\"></script>"; } return $javascript; } } I'm confused as to why assigning these variables in the class causes the page not to load... var $RootFolder = '/shyid/'; var $PagePath = str_replace($this->RootFolder, '', dirname($_SERVER['PHP_SELF'])); var $PageSections = explode('/', $this->PagePath); but when i set them on the page, everything works correctly? $head->RootFolder = '/shyid/'; $head->PagePath = str_replace($head->RootFolder, '', dirname($_SERVER['PHP_SELF'])); $head->PageSections = explode('/', $head->PagePath); Insight? Thanks. What would be the simplest way? Do you use a method in the child class? Personally I use Code: [Select] parent::$this->whatever; But I was wondering what you guys do. Hi, I am fairly new to PHP but trying to pick it up as I go and Phpfreaks has been a great help thanks everyone much appreciated. The problem I am facing is I want to call a class which should have a while Loop I tried a few ways but no luck so I am just requesting if some one could post me an example how can I achieve this. Greatly Appreciated. All my code is returning is the username... Please help.
index.php
<?php
include('user.class');
$user = new user("Jbonnett", "0", "Admin", "Jamie", "Bonnett", "jbonnett@site.co.uk", "01/09/1992");
echo "username: " . $user->getUsername() . "<br/>";
echo "id: " . $user->getId() . "<br/>";
echo "level: " . $user->getLevel() . "<br/>";
echo "Forename: " . $user->getForename() . "<br/>";
echo "Surname: " . $user->getSurname() . "<br/>";
echo "Email: " . $user->getEmail() . "<br/>";
echo "Dob: " . $user->getDob() . "<br/>";
?>
user.class
<?php
class user {
private $username;
private $id;
private $level;
private $forename;
private $surname;
private $email;
private $dob;
public function user($username, $id, $level, $forname, $surname, $email, $dob) {
$this->setUsername($username);
$this->setId($id);
$this->setLevel($level);
$this->setForename($forename);
$this->setSurname($surname);
$this->setEmail($email);
$this->setDob($dob);
}
public function destroy() {
unset($this->username);
unset($this->id);
unset($this->level);
unset($this->forename);
unset($this->surname);
unset($this->uemail);
unset($this->dob);
}
public function setUsername($username) {
$this->username = $username;
}
public function getUsername() {
return $this->username;
}
public function setId($id) {
$this->id = $id;
}
public function getId() {
return $this->$id;
}
public function setLevel($level) {
$this->level = $level;
}
public function getLevel() {
return $this->level;
}
public function setForename($forename) {
$this->foreName = $forename;
}
public function getForename() {
return $this->forename;
}
public function setSurname($surname) {
$this->surName = $surname;
}
public function getSurname() {
return $this->surname;
}
public function setEmail($email) {
$this->email = $email;
}
public function getEmail() {
return $this->email;
}
public function setDob($dob) {
$this->dob = $dob;
}
public function getDob() {
return $this->dob;
}
};
?>
I think this is what it is called... I having a brain fart... And I don't play with classes that much... Plus I have been playing with trying to get pdf's to output correctly so my brain is toasty.... I'm trying to parse DICOM (medical file format) files and I have this class and I want to setup an array to pull what fields I want. Code: [Select] <?php require '../dicomparser/nanodicom.php'; $filename = 'B4IBG5A0'; // 5) Load simple and print certain value try { //echo "5) Load simple and print certain value\n"; $dicom = Nanodicom::factory($filename); $dicom->parse(); //echo $dicom->profiler_diff('parse').'<br>'; echo 'Patient Name: '.$dicom->value(0x0010, 0x0010).'<br>'; echo 'Operators Name: '.$dicom->value(0x0010, 0x0040).'<br>'; echo 'Patient ID: '.$dicom->value(0x0010,0x0020).'<br>'; unset($dicom); } catch (Nanodicom_Exception $e) { echo 'File failed. '.$e->getMessage()."\n"; } //} ?> So what I want to do is have the array contain 'Patient Name' => '(0x0010, 0x0010)' etc... And have it something like this so I don't have to echo all the lines I want. Code: [Select] foreach ($array as $key => $value) { echo $key': '.$dicom->value.$value.'<br>'; } I can't get it to work... I remember figuring it out once before but that was over a year ago... And I don't have the code I wrote. I know it's something simple stupid. like $$ or [] i'm not getting the combination right. Thanks in advance... Hello there
After a few years of spending less and less time coding, I've got a lot of catching up to do. Back when I left I usually would run without classes. Now this is a big deal for me today.
I do understand the concept of classes and already did some working models, mostly from my learning process.
Now here is what is bothering me:
<?PHP
class database {
// Variables
public $test;
// Constructor
public function __construct()
{
$test = "4";
}
// Functions
//
public function test()
{
var_dump($this->test);
}
}
$test = new database;
$test->test();
?>
Wether I run this script on itself, nor through another file, this does work.
What i get is:
NULL
The constructor does run, I did an echo inside it. Also it does not matter if the variable is public, private or protected - it will be always NULL.
Error_reporting is on E_ALL, does not show any errors.
What have I overlooked?
I guess I'll rephrase since my wording wasn't very clear. Why don't echo "<p>\n"; if (!empty($locations) && is_array($locations)) { foreach ($locations as $field => $val) { if ($field == "City") { echo $field . ' : ' . $val . "<br />\n"; $val = $cityvar; } if ($field == "ZipPostalCode") { echo $field . ' : ' . $val . "<br />\n"; $val = $zipvar; } if ($field == "CountryName") { echo $field . ' : ' . $val . "<br />\n"; $val = $countryvar; } } } echo "</p>\n"; Hi Already looked around, and although I've found some solution I simply don't understand them (not skilled at all). I'm getting 10 random results using this, which works fine and list 10 random results.
$sql = "SELECT name FROM db ORDER BY RAND() LIMIT 10;";
$result = mysqli_query($con,$sql);
while ($row=mysqli_fetch_array($result,MYSQLI_ASSOC))
{
echo $row['name']."<br>";
}
How can I make 10 new variables for each result? foreach ($_POST as $key => $value){ // Handle escape characters, which depends on setting of magic quotes if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1){ $value = urlencode(stripslashes($value)); } else { $value = urlencode($value); } $req .= "&$key=$value"; } $reg is not returning anything. I need to create a loop where I can cycle through three variables and determine the maximum output. Here is an example... First loop $var_one = .01 $var_two = .01 $var_three = .98 run calculation for vars Second Loop $var_one = .02 $var_two = .01 $var_three = .97 run calculation for vars This loop would run through ALL possible values making sure that the total of all variables would always equal 1. There could be more than three variables so this will be dynamic. I have no idea how to make this. Any thoughts? Hi guys, I am trying something fairly simple but I'm not sure if this would be a good practice. Basically I am using a big class called CommonLibrary that holds common functions as methods and common variables as static variables. But I have some variables here and there like $allAlphabet = range ('a' , 'z'), that cannot be declared as a property because it gives me a parse error. I don't want to call an object for this class because instancing it is of no use. Values will never change with regards to instances. So the next best thing that I tried was declaring all static variables first, and then changing thei property values inside the class __construct with self::$variable = 'somevalue', and then using this code below to assign values to the empty static variables. $dummyObject = new CommonLibrary; unset($dummyObject); echo CommonLibrary::$staticVariable; // This property is NULL before the constructer is triggered. Anyone recommend any better ways of doing this? Thanks in advance! Hello All, Attached are 2 screenshots of the form and output for better reference. What I am trying to do is select all or some checkboxes and for those boxes that are checked, echo out their Payment Method. ---If a checkbox is checked but the Payment Method box == select, give an error. ---If checkbox is checked and Payment Method != select, echo out the ID and selection from the drop down box. Currently, I am echoing the correct ID(s) when certain boxes are checked, but I'm getting every drop down box selection when the corresponding box is not selected. Any help would be greatly appreciated. This is the HTML / PHP Form: $results .= '<table align="center" width="70%" border="0" bgcolor="'.$bg.'" cellpadding="2" cellspacing="0" class="resultsUnderline">'; $results .= '<tr>'; $results .= '<td width="30%" align="left">'.'<input type="checkbox" name="checkbox[]" value="'.$app_pmt_id.'" id="checkbox" />' .$full.'<FONT size="1" color="maroon"> ( '.$app_id.' )</FONT></td>'; $results .= '<td width="30%" align="center">'.$created.'</td>'; $results .= '<td width="20%" align="center"> <select name="pay_method[]" class="drop" id="pay_method"> <option value="select">-- Method --</option> <option value="check">Check</option> <option value="credit">Credit Card</option></td>'; $results .= '<td width="10%" align="center">'.$paid.'</td>'; $results .= '<td width="10%" align="right">'.$fee.'</td>'; $results .= '</tr>'; $results .= '</table>'; Here is the PHP getting the results: if(isset($_POST['action_box']) && $_POST['action_box'] == 'mark_paid') { $checked = array(); $checked2 = array(); if(!isset($_POST['checkbox'])) { $val_error[] = 'You have not selected any applications.'; } elseif($_POST['pay_method'] == 'select') { $val_error[] = 'Please select a Payment Method.'; } else { foreach($_POST['checkbox'] as $value) { $checked[] = $value; } foreach($_POST['pay_method'] as $value2) { $checked2[] = $value2; } echo implode(",", $checked); echo implode(",", $checked2); //$result = mysql_query("UPDATE app_pmt SET paid = '1' WHERE app_pmt_id IN(" . implode(",", $checked) . ")"); //header('Location: bal_due.php?id='.$_GET['id']); } } This is really blowing my mind... the code is as follows the table, the column names everything is right and contains information but the variables aren't being filled... I don't get it... Anyone have any ideas or options I might not have thought of for debugging? $item_name = ("SELECT * FROM items WHERE id = '$grab_item'"); $que_items = mysql_query($item_name); while ($item_todel = mysql_fetch_array($que_items, MYSQL_BOTH)) { $name = $item_todel['name']; $desc = $item_todel['desc']; } echo ($name . "<br>" . $desc . "<br>" . $grab_item); the only variable thats set is grab_item, fetch_array throws no errors, if I plug in the query straight to the sql I get all the proper information... It's just not filling the two variables.... Hello, If I have this string: $tags="baseball glove face" (this can vary from 1 to 15 different words) how would i loop through and divide these into different $tag1=baseball $tag2=glove $tag3=face .. and so on (if more words) Thanks for help |
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