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JordanMRichards 06-26-2012 03:27 PM
Paginating An Array
 
Hello everyone.
I am new to this forum.

I'm not sure how I'd paginate an array. I've worked out the $start and $limit. But I'm just not sure how I'd put that into my foreach loop.

May I stress that I've already handled displaying the links to the page etc.

All I need to do is implement pagination into an array of data.

Here's an example of my situation.

PHP Code:

    if($got_item_run = mysql_query($get_items_q)){
            if($item_data = mysql_fetch_assoc($got_item_run)) {
            $item_list = $item_data['catalog_items'];
            $items2 = explode(',',$item_list);
            $hasItem = false;
    
                  foreach($items as $curr_item) {

                $curr_items = explode('&', $curr_item);
                $array_length = count($curr_items);
                    if($array_length>=2) { 
I've made a pagination with mySQL because the "LIMIT" handled a lot of it. But you can't simply put "LIMIT $start, $limit" in a foreach loop.

I hope you understand my question.

Examples of your method of paginating an array in this situation would be appreciated.

Thank you.

DrDOS 06-26-2012 03:47 PM
This is where you need a for loop and not a for each loop. Then you just use arithmetic modulus to initiate the next page. I use for loops almost exclusively because they're simple, controlable and dependable, both in php and javascript.

JordanMRichards 06-26-2012 03:50 PM
Quote:
Originally Posted by DrDOS (Post 1245243)
This is where you need a for loop and not a for each loop. Then you just use arithmetic modulus to initiate the next page. I use for loops almost exclusively because they're simple, controlable and dependable, both in php and javascript.
I appreciate your feedback there DrDOS. However, the foreach loop is there to deal with the Array DATA. I can't use a for loop to do that can I?

If you could give me an example of such a for loop in my script I would really appreciate it. (I am 14 years of age and sometimes It's good to have an example just to make it "stick").

Thank you.

DrDOS 06-26-2012 05:26 PM
If you know the count of the array then you can use a for loop. I happen to have the code for a for loop right in my Clipboard.
PHP Code:
for ( $i = 0 ; $i < count($curr_items) ; $i++ )
{
if($i%24==0) Start a new page.
Whatever your are doing goes here.
} 
Starts a new page every 24th item.

JordanMRichards 06-26-2012 05:31 PM
Thanks, but how can I use my $limit and $start variables? Because it gets the $_GET['p'] from the url etc

PHP Code:
        if($got_item_run = mysql_query($get_items_q)){
            if($item_data = mysql_fetch_assoc($got_item_run)) {
            $item_list = $item_data['catalog_items'];
            $items2 = explode(',',$item_list);
            $hasItem = false;

                  foreach($items2 as $curr_item) {
    for ( $i = 0 ; $i < count($curr_item) ; $i++ )
{
if($i%1==0) {

                $curr_items = explode('&', $curr_item);
                $array_length = count($curr_items);
                    if($array_length>=2) {
                    $item_id = $curr_items[$start];
                    $item_serial = $curr_items[$start+1];
                        if (itemExists($item_id)) {
                        $item_name = getItemById($item_id, 'name');
                        $item_type = getItemById($item_id, 'type');
                        $item_gender = getItemById($item_id, 'gender');
                        $item_img = getItemById($item_id, 'display_image');
                        echo $item_name;
                        echo $item_serial; 

JordanMRichards 06-26-2012 05:40 PM
Here's more of my code.

It's getting really stressful now. I've been trying to do this for ages.

PHP Code:
//  ====================================================== //
//  ===================Pagination========================= //
//  ====================================================== //
//  ====================================================== //
    $adjacents = 1;
    $total_pages = 5;
    $total_pages = $total_pages[num];
    $limit = 1;     
    $limit = $limit * 2;                        
    
    if($page) 
        $start = ($page - 1) * $limit;             
    else
        $start = 0;                                
    
    /* Get data. */
    $get_items_q = $get_items_q." LIMIT $start, $limit";
    
    
    /* Setup page vars for display. */
    if ($page == 0) $page = 1;                    
    $prev = $page - 1;                            
    $next = $page + 1;                            
    $lastpage = ceil($total_pages/$limit);        
    $lpm1 = $lastpage - 1;                        
    
    $pagination = "";
    if($lastpage > 1)
    {    
        $pagination .= "<div class=\"pagination\">";
        //previous button
        if ($page > 1) 
            $pagination.= "<a href=\"$prev_page&p=$prev\">◄ previous</a>";
        else
            $pagination.= "<span class=\"disabled\">◄ previous</span>";    
        
        //pages    
        if ($lastpage < 7 + ($adjacents * 2))    //not enough pages to bother breaking it up
        {    
            for ($counter = 1; $counter <= $lastpage; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<span class=\"current\">$counter</span>";
                else
                    $pagination.= "<a href=\"$prev_page&p=$counter\">$counter</a>";                    
            }
        }
        elseif($lastpage > 5 + ($adjacents * 2))    //enough pages to hide some
        {
            //close to beginning; only hide later pages
            if($page < 1 + ($adjacents * 2))        
            {
                for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<span class=\"current\">$counter</span>";
                    else
                        $pagination.= "<a href=\"$prev_page&p=$counter\">$counter</a>";                    
                }
                $pagination.= "...";
                $pagination.= "<a href=\"$prev_page&p=$lpm1\">$lpm1</a>";
                $pagination.= "<a href=\"$prev_page&p=$lastpage\">$lastpage</a>";        
            }
            //in middle; hide some front and some back
            elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
            {
                $pagination.= "<a href=\"$prev_page&?p=\">1</a>";
                $pagination.= "<a href=\"$prev_page&p=2\">2</a>";
                $pagination.= "...";
                for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<span class=\"current\">$counter</span>";
                    else
                        $pagination.= "<a href=\"$prev_page&p=$counter\">$counter</a>";                    
                }
                $pagination.= "...";
                $pagination.= "<a href=\"$prev_page&p=$lpm1\">$lpm1</a>";
                $pagination.= "<a href=\"$prev_page&p=$lastpage\">$lastpage</a>";        
            }
            //close to end; only hide early pages
            else
            {
                $pagination.= "<a href=\"$prev_page&?p=\">1</a>";
                $pagination.= "<a href=\"$prev_page&p=2\">2</a>";
                $pagination.= "...";
                for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<span class=\"current\">$counter</span>";
                    else
                        $pagination.= "<a href=\"$prev_page&p=$counter\">$counter</a>";                    
                }
            }
        }
        
        //next button
        if ($page < $counter - 1) 
            $pagination.= "<a href=\"$prev_page&p=$next\">next ►</a>";
        else
            $pagination.= "<span class=\"disabled\">next ►</span>";
        $pagination.= "</div>\n";        
    }



//  ====================================================== //
//  ====================================================== //
//  ====================================================== //
//  ====================================================== //


        if($got_item_run = mysql_query($get_items_q)){
            if($item_data = mysql_fetch_assoc($got_item_run)) {
            $item_list = $item_data['catalog_items'];
            $items2 = explode(',',$item_list);
            $hasItem = false;


    for ( $i = 0 ; $i < count($items2) ; $i++ )
{
if($i%2==0) {

                $curr_items = explode('&', $curr_item);
                $array_length = count($curr_items);
                    if($array_length>=2) {
                    $item_id = $curr_items[$start];
                    $item_serial = $curr_items[$start+1];
                        if (itemExists($item_id)) {
                        $item_name = getItemById($item_id, 'name');
                        $item_type = getItemById($item_id, 'type');
                        $item_gender = getItemById($item_id, 'gender');
                        $item_img = getItemById($item_id, 'display_image');
                        echo $item_name;
                        echo $item_serial;

        if ($gender=='boy') {
        $gendericon = 'Images/boy_icon.png';
        }else if ($gender=='girl') {
        $gendericon = 'Images/girl_icon.png';
        }else{
        $gendericon = 'Images/no_gender_icon.png';
        }
        if($limited==1) {
            $total_available = $total_sold."/".$total_av;
            $item_special = 'Images/limited icon_over.png'; // Img source to "LIMITED" icon
        }else{
        $item_special = 'Images/item_transparent.png'; //Transparent image
        }
        
        if($item_type=='shoes') {
            $item_type = 'Shoes';
        }
        if($item_type=='trousers') {
            $item_type = 'Lower Wear';
        }
        if($item_type=='t_shirt') {
            $item_type = 'T-shirt|Vest';
        }
        if($item_type=='top') {
            $item_type = 'Top';
        }
        if($item_type=='face') {
            $item_type = 'Face';
        }
        if($item_type=='hair') {
            $item_type = 'Hair';
        }
        if($item_type=='acc') {
            $item_type = 'Accessory';
        }
        if($item_type=='hat') {
            $item_type = 'Hat';
        }
        
}  
                            }
                    }
                }
}
} 


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