objects in function?

gingar

Hi,

I've got the constructors for an object class in an include file. I've included this file in the page (main.php) that I intend to call it from. I need to instantiate the class from a function in main.php.

The class works fine when instantiate it directly from main.php, but when I put it into the function, it screws up!

It is possible to do this right? Instantiate a class and use it in the function from the function right?

Do I have to declare the object/class as a global? Or do I need to do some special stuff to do this?

😕

gripsh

main.php

include("include.php"); //Your class "YourClass" can be found in this file

function yourFunction($yourArg) {
	$yourNewInstance = new YourClass(); // Create new instance of your class
	$yourNewInstance->DoSomeStuff();
}

Are you saying this doesn't work, or are you trying to pass an instance that already exists? Are there any variables you've specified in main.php that are needed to create the new object?

alimadzi

Please post some PHP code so we can see exactly what you're trying to do...

gingar

this is the main.php

include("multisort.php"); 

//Instantiate the class
$temp_srt = new arr_multisort();
$available_srt = new arr_multisort();

//Set the array to be sorted
$temp_srt->setArray($temp_array);
$temp_srt->resetColumns();
$temp_srt->addColumn("NAME",SRT_ASC);
$temp_array = $temp_srt->sort();

for ($x=0;$x<count($temp_array);$x++)
{
	formatToDisplay($temp_array[$x]);
}


function formatToDisplay($nopromo)
{
	echo "<pre>";
	print_r($nopromo);
	echo "</pre>";

//Instantiate the class
$available_srt = new arr_multisort();
//Set the array to be sorted
$available_srt->setArray($nopromo);
$available_srt->resetColumns();
$available_srt->addColumn("AVAILABLE",SRT_ASC);

$nopromo = $available_srt->sort();	

echo "<pre>";
print_r($nopromo);
echo "</pre>";
}

this is the multisort.php

class arr_multisort{

  var $arr = NULL;
  var $sortDef = NULL;

  //Constructor
  function arr_multisort(){
    $this->arr = array();
    $this->sortDef = array();
  }

  //setArray method - sets the array to be sorted
  function setArray(&$arr){
    $this->arr = $arr;
  }

  function addColumn($colName="",$colDir=SRT_ASC,$compareFunc=NULL){
    $idx = $this->_getColIdx($colName);
    if($idx < 0){
      $this->sortDef[] = array();
      $idx = count($this->sortDef)-1;
    }
    $this->sortDef[$idx]["colName"] = $colName;
    $this->sortDef[$idx]["colDir"] = $colDir;
    $this->sortDef[$idx]["compareFunc"] = $compareFunc;
  }

  //removeColumn method - removes entry from sorting definition
  function removeColumn($colName=""){
    $idx = $this->_getColIdx($colName);
    if($idx >= 0) array_splice($this->sortDef,$idx,1);
  }

  //resetColumns - removes any columns from sorting definition. Array to sort is not affected.
  function resetColumns(){
    $this->sortDef = array();
  }

  //sort() method
  function &sort(){
    usort($this->arr,array($this,"_compare"));
    return $this->arr;
  }

  //_getColIdx method [PRIVATE]
  function _getColIdx($colName){
    $idx = -1;
    for($i=0;$i<count($this->sortDef);$i++){
      $colDef = $this->sortDef[$i];
      if($colDef["colName"] == $colName) $idx = $i;
    }
    return $idx;
  }

  //Comparison function [PRIVATE]
  function _compare($a,$b,$idx = 0){
    if(count($this->sortDef) == 0) return 0;
    $colDef = $this->sortDef[$idx];
    $a_cmp = $a[$colDef["colName"]];
    $b_cmp = $b[$colDef["colName"]];
    if(is_null($colDef["compareFunc"])){
      $a_dt = strtotime($a_cmp);
      $b_dt = strtotime($b_cmp);
      if(($a_dt == -1) || ($b_dt == -1) || ($a_dt == false) || ($b_dt == false))
        $ret = $colDef["colDir"]*strnatcasecmp($a_cmp,$b_cmp);
      else{
        $ret = $colDef["colDir"]*(($a_dt > $b_dt)?1:(($a_dt < $b_dt)?-1:0));
      }
    }
    else{
      $code = '$ret = ' . $colDef["compareFunc"] . '("' . $a_cmp . '","' . $b_cmp . '");';
      eval($code);
      $ret = $colDef["colDir"]*$ret;
    }
    if($ret == 0){
      if($idx < (count($this->sortDef)-1))
        return $this->_compare($a,$b,$idx+1);
      else
        return $ret;
    }
    else
      return $ret;
  }

}

my original array looks like this

this is what the array looks like before the class is run.

Array
(
    [NAME] => HOTEL 1
	[PRODUCT_ID] => 11111
	[IMAGE1] => 
	[ADDR] => GEYLANG
	[STAR] => 2 STARS
	[CHEAPEST_ROOM_PRICE] => 1
	[ROOM_AVAILABILITY] => y
	[NUMBER_ROOM_ROW] => 1
	[ROW1] => Array
		(
			[PRODUCT_ID] => 11111
			[NAME] => HOTEL 1
			[HOTEL_CODE] => 
			[AVAILABLE] => book
			[TOTAL_PRICE_AFT_MARKUP] => 1
			[CURRENCY] => 
			[CURRENCY_CODE] => USD
			[ROOM1] => Array
				(
					[ROOM_NAME] => Double
					[MEALS] => -
					[PAX_NO] => 1
					[ROOM_PRICE_AFT_MARKUP] => 1
				)

	)

)

and this is what happened to it after the class is run!

Array
(
    [0] => 
    [1] => 1
    [2] => GEYLANG
    [3] => HOTEL 1
    [4] => 2 STARS
    [5] => 1
    [6] => y
    [7] => 11111
    [8] => Array
        (
            [PRODUCT_ID] => 11111
			[NAME] => HOTEL 1
			[HOTEL_CODE] => 
			[AVAILABLE] => book
			[TOTAL_PRICE_AFT_MARKUP] => 1
			[CURRENCY] => 
			[CURRENCY_CODE] => USD
			[ROOM1] => Array
				(
					[ROOM_NAME] => Double
					[MEALS] => -
					[PAX_NO] => 1
					[ROOM_PRICE_AFT_MARKUP] => 1
				)

    )

)

it sorted the wrong column.. and messed up the array.. which leads me to conclude that the object was not called! am I right to say that? 😕

laserlight

Geylang? Are you from Singapore, by any chance?

Anyway, have you considered the use of [man]array_multisort/man or [man]usort/man? For example, usort() could be used with [man]create_function/man to sort by the NAME column:

usort($temp_array,
      create_function('$a, $b', 'return strcasecmp($a["NAME"], $b["NAME"]);'));

gingar

kekeke.. i've realised its not php's problem.. its the values i pass over that's the problem.. lol

yup, Singapore