PHP - Passing Class To Function

hello.

i have posted something similar before and people said i should go away and learn oop. I have since done the entire Linda training on oop, watched countless videos and build a photo gallery (from the training videos) but im still stuck on this silly little thing.

so please please could some one help. thanks

ok, so i have 2 classes. 1 called Pages and 1 called Templates.
each page has an id for the layout it wants to use.

so i want to get the layoutTemps_id from the pages class and use it in a function WHERE clause to get the correct layout for that page.

I cant seem to pass the layoutTemps_id into my Templates class from my Pages Class ???

i tried using a global but couldnt get it to work.

ANY IDEAS ?? thanks

this is the Pages class function that gets all the information for each page.

Code: [Select]
public static function find_by_pageName($pName){
global $database;
$sql = "SELECT * FROM ".self::$table_name." WHERE pageName='".$database->escape_value($pName)."'";
$result_array = self::find_by_sql($sql);
return !empty($result_array) ? array_shift($result_array) : false;
}

that works just fine. it gets the $pName on the page and is different each time.
i.e
Code: [Select]
$pName = "adminHome";
$page = Pages::find_by_pageName($pName);

echo $page->id."<br />";
echo $page->layoutTemps_id.'<br/>';




so that all seems to work fine. now i want to use the $page->layoutTemps_id in my Templates class.

this is the class
class Templates extends Pages {

this is the function im trying to write. i thought that because class Templates extends Pages i could put in $page->layoutTemps_id with no problem but in stuck.

Code: [Select]
public static function find_layoutTemp(){

$layoutTemps_id = Pages::layoutTemps_id;

$sql = "SELECT * FROM ".self::$table_name." WHERE id='".$database->escape_value($layoutTemps_id)."'";
$result_array = self::find_by_sql($sql);
return !empty($result_array) ? array_shift($result_array) : false;
}

this is the page where im echoing the layoutTemps_id

Code: [Select]
<?PHP
require_once("../includes/initialize.php");
$temp = Templates::find_layoutTemp();

echo "layoutTemp id " .$temp->id . " <br />";
echo "layoutTemp name " .$temp->name ." <br />";


now, i'm 100% sure there's lots wrong with my code but i'm ill be happy if someone could help.

thanks
rick

 

Hey Guys, So I am working on implementing zip codes to my database. I found a zip code calculator script, and I am forced to pass the database connection to the class. Although, I realize I use a mysqli connection and the zipcodes class uses mysql...

Appreciate if anyone could assist me in solving my issue. THANKS!

ERRORS...
Quote

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/bleeping/public_html/gregstechservices.com/gregphp/ZipCodesRange.class.php on line 287

Warning: mysql_errno(): supplied argument is not a valid MySQL-Link resource in /home/bleeping/public_html/gregstechservices.com/gregphp/ZipCodesRange.class.php on line 289

Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in /home/bleeping/public_html/gregstechservices.com/gregphp/ZipCodesRange.class.php on line 289
MySql Error #:



zip.php
<?php 
require_once("class/mysql_connect.php");
$mysql = New MySQL();
require_once("ZipCodesRange.class.php");
//initialization, pass in DB connection, from zip code, distance in miles.
$zip = new ZipCodesRange($mysql,'98303',50);

//configuration
$zip->setTableName('zipcodes'); //optional, default is zips.
$zip->setZipColumn('ZipCode'); //optional, default is zip.
$zip->setLonColumn('Longitude'); //optional, default is lon.
$zip->setLatColumn('Latitude'); //optional, default is lat.

//do the work
$zip->setZipCodesInRange(); //call to initialize zip array

//zip code output, other processing can be done from this array.
$zipArray = $zip->getZipCodesInRange();

echo '<pre>';
print_r($zipArray);
echo '</pre>';

?>

mysql_connect.php

<?php

require_once ("includes/constants.php");
class MySQL
{

    private $conn;

    /**
     * MySQL::__construct()
     * 
     * @return
     */
    function __construct()
    {
        $this->conn = new mysqli(DB_SERVER, DB_USER, DB_PASS, DB_NAME) or die("Problem connecting to database");
        $dbc = $this->conn;
    }


    /*
    * Query the database
    * Example: $result = $mysql->query($q);
    */
    /**
     * MySQL::query()
     * 
     * @param mixed $q
     * @return
     */
    function query($q)
    {
        return $this->conn->query($q);
    }

...CONTINUED


ZipCodesRange.class.php

<?php
/**
 * Class to find zip codes within an approximate
 * distance of another zip code. This can be useful
 * when trying to find retailers within a certain
 * number of miles to a customer.
 *
 * This class makes some assumptions that I consider
 * pretty safe.  First it assumes there is a database
 * that houses all of the zip code information. 
 * Secondly it assumes there is a way to validate a
 * zip code for a given country.  It makes one bad
 * assumption and that is that the world is flat. See
 * comments below for an explanation.
 *
 * @author  Scott Mattocks
 * @created 2004-05-03
 * @updated 2004-05-14
 * @updated 2006-05-22 - MySQL Conversion by Allan Bogh
 * - Added precisionDistance() function to make calculations
 * more accurate (within 2 miles).
 * - Modified class initialization to make custom database settings
 * more effective.
 * New initialization steps:
 * $zip = new ZipCodesRange($appconf['dbconnection'],'98303',50);
 * $zip->setTableName('zip_codes'); //optional
 * $zip->setZipColumn('zip'); //optional
 * $zip->setLonColumn('longitude'); //optional
 * $zip->setLatColumn('latitude'); //optional
 * $zip->setZipCodesInRange(); //call to initialize zip array
 * echo '<pre>';
 * print_r($zip->getZipCodesInRange());
 * echo '</pre>';
 */

class ZipCodesRange {

  /**
   * The conversion factor to go from miles to degrees.
   * @var float
   */
  var $milesToDegrees = .01445;
  /**
   * The zipcode we are starting from.
   * @var string
   */
  var $zipCode;
  /**
   * The maximum distance in miles to return results for.
   * @var float
   */
  var $range;
  /**
   * The country the zip code is in.
   * @var string Two character ISO code.
   */
  var $country;  
  /**
   * The result of our search.
   * array(zip1 => distance, zip2 =>distance,...)
   * @var array
   */
  var $zipCodes = array ();
  /**
   * The database table to look for zipcodes in.
   * @var string
   */
  var $dbTable = 'zips';
  /**
   * The name of the column containing the zip code.
   * @var string
   */
  var $dbZip = 'zip';
  /**
   * The name of the column containing the longitude.
   * @var string
   */
  var $dbLon = 'lon';
  /**
   * The name of the column containing the latitude.
   * @var string
   */
  var $dbLat = 'lat';
  
  var $db;

  /**
   * Constructor. Calls initialization method.
   *
   * @access private
   * @param  resource $db The link identifier for the database.
   * @param  string  $zipCode
   * @param  float   $range
   * @param  string  $country Optional. Defaults to US.
   * @return object
   */
  function ZipCodesRange($db, $zipCode, $range, $country = 'US') {
    
    $this->_initialize($db, $zipCode, $range, $country);
  }

  /**
   * Initialization method. 
   * Checks data and sets member variables.
   *
   * @access private
   * @param  resource $db The link identifier for the database.
   * @param  string  $zipCode
   * @param  float   $range
   * @param  string  $country Optional. Defaults to US.
   * @return boolean 
   */   
  function _initialize($db, $zipCode, $range, $country) {
    //set up the database connection
$this->db = $db;

    // Check the country.
    if ($this->validateCountry($country)) {
      $this->country = $country;
    } else {
      trigger_error('Invalid country: ' . $country);
      return FALSE;
    }

    // Check the zipcode.
    if ($this->validateZipCode($zipCode, $country)) {
      $this->zipCode = $zipCode;
    } else {
      trigger_error('Invalid zip code: ' . $zipCode);
      return FALSE;
    }

    // We don't need a special method to check the range.
    if (is_numeric($range) && $range >= 0) {
      $this->range = $range;
    } else {
      trigger_error('Invalid range: ' . $range);
      return FALSE;
    }

    // Set up the zip codes.
    //return $this->setZipCodesInRange();
  }

  /**
   * Get all of the zip codes from the database.
   * Currently this method is called on construction but
   * it doesn't have to be.
   *
   * @access public
   * @return boolean
   */
  function setZipCodesInRange() {
    
    // First check that everything is set.
    if (!isset($this->zipCode) || !isset($this->range) || !isset($this->country)) {
      trigger_error('Cannot get zip codes. Class not initialized properly.');
      return FALSE;
    }

    // Get the max longitude and latitude of the starting point.
    $maxCoords = $this->getRangeBox();
    
    // The query.
    $query = 'SELECT ' . $this->dbZip . ', ' . $this->dbLat . ', ';
    $query.=  $this->dbLon . ' ';
    $query.= 'FROM ' . $this->dbTable . ' ';
    $query.= ' WHERE ';
    $query.= '  (' . $this->dbLat . ' <= ' . $maxCoords['max_lat'] . ' ';
    $query.= '    AND ';
    $query.= '   ' . $this->dbLat . ' >= ' . $maxCoords['min_lat'] . ') ';
    $query.= '  AND ';
    $query.= '  (' . $this->dbLon . ' <= ' . $maxCoords['max_lon'] . ' ';
    $query.= '    AND ';
    $query.= '   ' . $this->dbLon . ' >= ' . $maxCoords['min_lon'] . ') ';

    // Query the database.
    $qry = mysql_query($query,$this->db);
    
    // Check for errors.
    if (!$qry) {
      trigger_error('MySQL Error #'.mysql_errno($this->db).': '.mysql_error($this->db), E_USER_ERROR);
    }

    // Process each row.
    while ($result = mysql_fetch_array($qry)) {

      // Get the distance form the origin (imperfect see below).
      $distance = $this->precisionDistance($result[$this->dbLat], $result[$this->dbLon]);
      // Double check that the distance is within the range.
      if ($distance < $this->range) {
// Add the zip to the array
$this->zipCodes[$result[$this->dbZip]] = $distance;
      }
    }
    return TRUE;
  }

  /**
   * Return the array of results.
   *
   * @access public
   * @param  none
   * @return &array
   */
  function &getZipCodesInRange() {
    return $this->zipCodes;
  }

  /**
   * Calculate the distance from the coordinates are from the
   * origin zip code.
   *
   * The method is quite imperfect.  It assumes as flat Earth.
   * The values are quite accurate (depending on the conversion
   * factor used) for zip codes close  to the equator. I found
   * some crazy formula for calulating distance on a sphere
   * but I am not good enough at calculus to convert that into
   * working code.
   *
   * @access public
   * @param  float $lat       The latitude you want to know the distance to.
   * @param  float $lon       The longitude you want to know the distance to.
   * @param  float $zip       The zip code you want to know the distance from.
   * @param  int   $percision The number of decimals places in the distance.
   * @return float            The distance from the zip code to the coordinates.
   */
  function calculateDistance($lat, $lon, $zip = NULL, $percision = 2) {
    
    // Check the zip first.
    if (!isset ($zip)) {
      // Make it default to the origin zip code.
      // Could be used to calculate distances from other points.
      $zip = $this->zipCode;
    }
    // Get the coordinates of our starting zip code.
    list ($starting_lon, $starting_lat) = $this->getLonLat($zip);

    // Get the difference in miles for both coordinates.
    $diffLonMiles = ($starting_lon - $lon) / $this->milesToDegrees;
    $diffLatMiles = ($starting_lat - $lat) / $this->milesToDegrees;
    
    // Calculate the distance between two points.
    $distance = sqrt(($diffLonMiles * $diffLonMiles) + ($diffLatMiles * $diffLatMiles));

    // Return the distance rounded to the defined percision.
    return round($distance, $percision);
  }
  
  /**
   * See the report for calculateDistance function.
   */
  function precisionDistance($lat, $lon, $zip = NULL, $precision = 2){
   $earthsradius = 3963.19;
// Check the zip first.
    if (!isset ($zip)) {
      // Make it default to the origin zip code.
      // Could be used to calculate distances from other points.
      $zip = $this->zipCode;
    }

// Get the coordinates of our starting zip code.
    list ($starting_lon, $starting_lat) = $this->getLonLat($zip);
$pi = pi();
   $c = sin($starting_lat/(180/$pi)) * sin($lat/(180/$pi)) +
     cos($starting_lat/(180/$pi)) * cos($lat/(180/$pi)) *
        cos($lon/(180/$pi) - $starting_lon/(180/$pi));

$distance = $earthsradius * acos($c);
return round($distance,$precision);
  }

  /**
   * Get the longitude and latitude for a single zip code.
   *
   * @access public
   * @param  string $zip  The zipcode to get the coordinates for.
   * @return array  Numerically index with longitude first.
   */
  function getLonLat($zip) {
    
    // Get the longitude and latitude for the zip code.
    $query = 'SELECT ' . $this->dbLon . ', ' . $this->dbLat . ' ';
    $query.= 'FROM ' . $this->dbTable . ' ';
    $query.= 'WHERE ' . $this->dbZip . ' = \'' . addslashes($zip) . '\' ';

$qry = mysql_query($query,$this->db);
if(!$qry){
echo "MySql Error #".mysql_errno($this->db).': '.mysql_error($this->db).'<br>';
die;
}
    return mysql_fetch_array($qry);
  }

  /**
   * Check to see if the country is valid.
   *
   * Not implemented in any useful manner.
   *
   * @access public
   * @param  string  $country The country to check.
   * @return boolean
   */
  function validateCountry($country) {

    return (strlen($country) == 2);
  }

  /**
   * Check to see if a zip code is valid.
   *
   * Not implemented in any useful manner.
   *
   * @access public
   * @param  string $zip     The code to validate.
   * @param  string $country The country the zip code is in.
   * @return boolean
   */
  function validateZipCode($zip, $country = NULL) {
    
    // Set the country if we need to.
    if (!isset($country)) {
      $country = $this->country;
    }
    
    // There should be a way to check the zip code for every
    // acceptabe country.
    return TRUE;
  }

  /**
   * Get the maximum and minimum longitude and latitude values
   * that our zip codes can be in.
   *
   * Not all zipcodes in this box will be with in the range.
   * The closest edge of this box is exactly range miles away
   * from the origin but the corners are sqrt(2(range^2)) miles
   * away. That is why we have to double check the ranges.
   *
   * @access public
   * @param  none
   * @return &array The edges of the box.
   */
  function &getRangeBox() {

    // Calculate the degree range using the mile range
    $degrees = $this->range * $this->milesToDegrees;

    // Get the coords for our starting zip code.
    list($starting_lon, $starting_lat) = $this->getLonLat($this->zipCode);
    
    // Set up an array to return.
    $ret_array = array ();

    // Lat/Lon ranges 
    $ret_array['max_lat'] = $starting_lat + $degrees;
    $ret_array['max_lon'] = $starting_lon + $degrees;
    $ret_array['min_lat'] = $starting_lat - $degrees;
    $ret_array['min_lon'] = $starting_lon - $degrees;

    return $ret_array;
  }

  /**
   * Allow users to set the name of the database table holding
   * the information.
   *
   * @access public
   * @param  string $table The name of the db table.
   * @return void
   */
  function setTableName($table) {
    $this->dbTable = $table;
  }

  /**
   * Allow users to set the name of the column holding the
   * latitude value.
   *
   * @access public
   * @param  string $lat The name of the column.
   * @return void
   */
  function setLatColumn($lat) {
    $this->dbLat = $lat;
  }

  /**
   * Allow users to set the name of the column holding the
   * longitude value.
   *
   * @access public
   * @param  string $lon The name of the column.
   * @return void
   */
  function setLonColumn($lon) {
    $this->dbLon = $lon;
  }

  /**
   * Allow users to set the name of the column holding the
   * zip code value.
   *
   * @access public
   * @param  string $zips The name of the column.
   * @return void
   */
  function setZipColumn($zip) {
    $this->dbZip = $zip;
  }

  /**
   * Set a new origin and re-get the data.
   *
   * @access public
   * @param  string $zip The new origin.
   * @return void
   */
  function setNewOrigin($zip) {
    
    if ($this->validateZipCode($zip)) {
      $this->zipCode = $zip;
      $this->setZipCodesInRange();
    }
  }
  
  /**
   * Set a new range and re-get the data.
   *
   * @access public
   * @param  float  $range The new range.
   * @return void
   */
  function setNewRange($range) {
    
    if (is_numeric($range)) {
      $this->range = $range;
      $this->setZipCodesInRange();
    }
  }

  /**
   * Set a new country but don't re-get the data.
   * 
   * It isn't any good to check a zip code in two 
   * countries cause the rules for zip codes vary from
   * country to country.
   *
   * @access public
   * @param  string $country The new country.
   * @return void
   */
  function setNewCountry($coutry) {

    if ($this->validateCountry($country)) {
      $this->country = $country;
    }
  }

  /**
   * Allow users to set the converstion ratio.
   * Hopefully you are changing the percision
   * and not setting a bad value.
   *
   * @access public
   * @param  float  $rate The new value.
   * @return void
   */
  function setConversionRate($rate) {
    
    if (is_numeric($rate)) {
      $this->milesToDegrees = $rate;
    }
  }
}
/* Debugging lines
$zcr = new ZipCodesRange(10965, 10);
print_r($zcr);
*/
?>

I don't know why it won't work.. as the topic titles says that I am trying to pass a mysqli object to a property in another class  but it keeps me getting an error. here's the code for the mysqli object that i want to pass to another class

class ConnectMe2Db
{
	public $dbname  = 'somedatabase';
	public $dbuname = 'root';
	public $dbpass  = '';
	public $dbhost  = 'localhost';
	
	function __construct()
	{
		$mysqli = new mysqli($this->dbhost,$this->dbuname,$this->dbpass,$this->dbname)
			or die ('ERROR: '.$mysqli->connect_errno);
		return $mysqli;
	}
       # OTHER CODES...
}

and here is the class that i want the Mysqli object to pass to:

class DatabaseUsers
{
	private $dbconnection;
	
        function __construct()
	{
		$this->dbconnection = new ConnectMe2Db();#mysqli object will be passed to this attribute '$dbconnection'
	}
	
	public function session($username, $password)
	{
		$UserName = mysqli_real_escape_string($this->dbconnection,$username);
		$Password = mysqli_real_escape_string($this->dbconnection,md5($password));
		$querry = "SELECT * FROM trakingsystem.login WHERE username='$username' and password='$password'";
		$result = mysqli_query($this->dbconnection,$querry) or die (mysqli_error($this->dbconnection));
		$count = mysqli_num_rows($result);
		$row = mysqli_fetch_array($result);
		if ($count > 0)
			{
                              #some code here
			}
	}
#some other code here
}

and this outputs 4  errors:

#outputs 2 of these:

Warning: mysqli_real_escape_string() expects parameter 1 to be mysqli

and some

mysqli_query() expects parameter 1 to be mysqli

mysqli_error() expects parameter 1 to be mysqli

is there something wrong with the logic that I've made? please help thanks

I need to call usort from a class function, and I'm puzzled about how to define the comparison function.

I've tried to define the comparison function in the same class, but I can't get usort to call it. I found one hint that it will work if I make the comparison function static, but I tried that, and it didn't work for me.

If I define the comparison function outside the class, it won't have access to object properties that it needs to operate.

The only solution I can think of is to define the comparison function outside the class and put the object properties it needs in globals. Is there a cleaner way to do this?

Hi I have a table class and functions I want to call in another function but can't get it working. Some help will be very welcome.

It seesm that the new table class is not working in this function if I pass the values to it, I have tested the class, it does get the post values I post to it so $_POST['id'] are being received as well as all the other $_POST's but the table class and find function is not working, it works fine if I don't put it in a function..

function edit() {
   
   if (isset($error)){ $error.="Please fix the error(s) above";}
   else {

      if ($_POST['id'] <> "") { 
                   
         $update =& new table($db, 'publisher');

         $update->find($_POST['id']);
         $update->name       = $_POST['name'];
         $update->url        = $_POST['url'];
         $update->contact    = $_POST['contact'];
         $update->address    = $_POST['address'];
         $update->phone        = $_POST['phone'];
         $update->email        = $_POST['email'];
         $update->save();

         $error = "The Publisher has been edited";   
                }
   }
  }