Button that increases the limit of mysql_query

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Hello everyone, I'm trying to get the following error: 

$albuns = mysql_query("SELECT * FROM albuns ORDER BY id DESC limit 4");

Make the limit increase +4 for each time you press, making 8,12,16 boxes appear. 

<ul>
                    <?php
                $albuns = mysql_query("SELECT * FROM albuns ORDER BY id DESC limit 4");
                while($lista_albuns = mysql_fetch_array($albuns)){
                    $id_album = $lista_albuns['id'];
                    if($lista_albuns['tipo'] == 'album'){
                        $capa = mysql_fetch_array(mysql_query("SELECT * FROM fotos_album WHERE id_album = '$id_album' AND capa = 1"));
            ?>
                <a rel="prettyPhoto[<?=$lista_albuns['id'];?>]" href="images/aconteceu/<?=$capa['foto'];?>" class="mosaic-block bar item" title="<?php
                                if($capa['comentario'] == ''){
                                    echo $lista_albuns['descricao'];
                                }
                                else{
                                    echo $capa['comentario'];
                                }
                            ?>">
                    <li class="mosaic-block">
                        <img src="images/aconteceu/<?=$capa['foto'];?>" />
                         <p><?=$lista_albuns['nome'];?></p> 
                    </li>



                    <?php
                        $fotos = mysql_query("SELECT * FROM fotos_album WHERE id_album = '$id_album' AND capa = 2");
                        while($lista_fotos=mysql_fetch_array($fotos)){
                    ?>
                            <a rel="prettyPhoto[<?=$lista_albuns['id'];?>]" class="ocult" href="images/aconteceu/<?=$lista_fotos['foto'];?>" title="
                            <?php
                                if($lista_fotos['comentario'] == ''){
                                    echo $lista_albuns['descricao'];
                                }
                                else{
                                    echo $lista_fotos['comentario'];
                                }
                            ?>"></a>
                    <?
                        }
                    ?>
                </a> 
            <?
                    }
                    else if($lista_albuns['tipo'] == 'video'){
                        $video = mysql_query("SELECT * FROM fotos_album WHERE id_album = '$id_album' LIMIT 1");
                        $row_video = mysql_fetch_array($video);
                        $url = $row_video['foto'];
                        preg_match("#(?<=v=)[a-zA-Z0-9-]+(?=&)|(?<=v\/)[^&\n]+|(?<=v=)[^&\n]+|(?<=youtu.be/)[^&\n]+#", $url, $output);
            ?>
                        <a rel="prettyPhoto" href="<?=$url;?>" class="mosaic-block bar item" title="<?=$lista_albuns['descricao'];?>">
                            <img src="images/__video.png" class="play_video" />
                            <li class="mosaic-block">
                                <div class="opacity_album">
                                </div>
                                <img src="http://img.youtube.com/vi/<?=$output[0]?>/0.jpg"/><p><?=$lista_albuns['nome'];?></p></li></a><?}}?></ul>

!

<ahref="#"><div class="botao"><p>veja mais</p></div></a>
    
asked by anonymous 19.04.2016 / 20:00

1 answer

1

You should either use OFFSET or use some other alternative, As shown here , making some minor adaptations. 

SELECT * FROM albuns ORDER BY id DESC LIMIT 4 OFFSET 0
// Irá listar todos os itens de id 0 até 3.


SELECT * FROM albuns ORDER BY id DESC LIMIT 4 OFFSET 4
// Irá listar todos os itens de id 3 até 7

So just use your imagination to change OFFSET dynamically, based on "see more" and collect

As this will depend on case by case, one thing you can do in your situation is to calculate the amount of existing items.

For example:

  

Note: This is an example and requires changes! 

$('div .botao').click(function(){

    var numeroExistente = $('a [rel]').size();

    $.post("api/proximo.php", {numero: numeroExistente}, function(data) {

      //...

    });    

});


<?php

  $numeroExistente = (int)$_POST['numero'];
  mysql_query("SELECT * FROM albuns ORDER BY id DESC limit 4 OFFSET ".$numeroExistente);

  //...

?>
  

Note: Do not use mysql _ *!

    
19.04.2016 / 20:29
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