what is this: $this ->

Can someone define what this is? What's happening here ?

	//public function fetchPagedNavigation($queryVars = "") {
	public function fetchPagedNavigation($queryVars) {
		return $this->getLayout()->fetchPagedLinks($this, $queryVars);
	}//end writeNavigation

PHP:

 

It's running the internal class method getLayout()
which then has a line:
return $this;

allowing method chaining (PHP 5 only)
which then runs fetchPagedLinks - passing $this and the original $queryVars as a second variable.

(Lots of carriage returns, hopefully it will make it easier to understand - try Googling 'method chaining'.

 

I'm trying to insert making $queryVars equal to this for-loop.

$queryVars = "";
//for the url
	for ($j=0; $j < count($newSearchTheseArr); $j++){
		if($j!= count($newSearchTheseArr)-1){
			$queryVars .= $newSearchTheseArr[$j]."+";
		}else{
			$queryVars .= $newSearchTheseArr[$j];
		}
	}
	//echo "hi".$queryVars."hi<br />";

PHP:

in this:

//public function fetchPagedNavigation($queryVars = "") {
public function fetchPagedNavigation($queryVars) {
	return $this->getLayout()->fetchPagedLinks($this, $queryVars);
}//end writeNavigation

PHP:

 

You'll need to post the whole class and any parent classes.

Btw, what's wrong with www.php.net/urlencode? Sounds like what you need.

Dan

 

There were a few files downloaded since it was a tutorial.

class Paginated {

	private $rs;                  			//result set
	private $pageSize;                      //number of records to display
	private $pageNumber;                    //the page to be displayed
	private $rowNumber;                     //the current row of data which must be less than the pageSize in keeping with the specified size
	private $offSet;
	private $layout;

	function __construct($obj, $displayRows = 10, $pageNum = 1) {
		$this->setRs($obj);
		$this->setPageSize($displayRows);
		$this->assignPageNumber($pageNum);
		$this->setRowNumber(0);
		$this->setOffSet(($this->getPageNumber() - 1) * ($this->getPageSize()));
	}

	//implement getters and setters
	public function setOffSet($offSet) {
		$this->offSet = $offSet;
	}

	public function getOffSet() {
		return $this->offSet;
	}


	public function getRs() {
		return $this->rs;
	}

	public function setRs($obj) {
		$this->rs = $obj;
	}

	public function getPageSize() {
		return $this->pageSize;
	}

	public function setPageSize($pages) {
		$this->pageSize = $pages;
	}

	//accessor and mutator for page numbers
	public function getPageNumber() {
		return $this->pageNumber;
	}

	public function setPageNumber($number) {
		$this->pageNumber = $number;
	}

	//fetches the row number
	public function getRowNumber() {
		return $this->rowNumber;
	}

	public function setRowNumber($number) {
		$this->rowNumber = $number;
	}

	public function fetchNumberPages() {
		if (!$this->getRs()) {
			return false;
		}
		
		$pages = ceil(count($this->getRs()) / (float)$this->getPageSize());
		return $pages;
	}

	//sets the current page being viewed to the value of the parameter
	public function assignPageNumber($page) {
		if(($page <= 0) || ($page > $this->fetchNumberPages()) || ($page == "")) {
			$this->setPageNumber(1);
		}
		else {
			$this->setPageNumber($page);
		}
		//upon assigning the current page, move the cursor in the result set to (page number minus one) multiply by the page size
		//example  (2 - 1) * 10
	}

	public function fetchPagedRow() {
		if((!$this->getRs()) || ($this->getRowNumber() >= $this->getPageSize())) {
			return false;
		}

		$this->setRowNumber($this->getRowNumber() + 1);
		$index = $this->getOffSet();
		$this->setOffSet($this->getOffSet() + 1);
		return $this->rs[$index];
	}

	public function isFirstPage() {
		return ($this->getPageNumber() <= 1);
	}

	public function isLastPage() {
		return ($this->getPageNumber() >= $this->fetchNumberPages());
	}

	/**
	 * <description>
	 * @return PageLayout <description>
	 */
	public function getLayout() {
		return $this->layout;
	}

	/**
	 * <description>
	 * @param PageLayout <description>
	 */
	public function setLayout(PageLayout $layout) {
		$this->layout = $layout;
	}

	//returns a string with the base navigation for the page
	//if queryVars are to be added then the first parameter should be preceeded by a ampersand


	//public function fetchPagedNavigation($queryVars = "") {
	public function fetchPagedNavigation($queryVars) {
		return $this->getLayout()->fetchPagedLinks($this, $queryVars);
	}//end writeNavigation
}//end Paginated

PHP: