PHP while loop split into two

问题

I'm running a while loop which is taking rows from mySQL and echo'ing them out. Pretty standard. However, there needs to be different HTML markup for the first item, next two items, then it continues as normal into the while loop.

Currently, my while loop looking something like this:

while( ( $row = mysql_fetch_object( $result ) ) !== false )
    {   

    // Places ad based of predefined variable frequency
    if ($ad == $adFrequency){

     echo '<div class="one-advertisement-article clearfix">';
     echo '<div class="grid_9 suffix_2"><img src="http://placehold.it/263x75/000000/ffffff"></div>';
     echo '<div class="grid_1"><a class="navigate-right-icon ss-icon" href="#">navigateright</a></div>';
     echo '</div>';

     $ad = 0;
    }

    echo '<div class="one-news-article clearfix">';
    if( $row->imagelibid )
            {
                $imageid = intval( $row->imagelibid );
                $image_result = mysql_query( "SELECT * FROM imagelib WHERE id = {$imageid}", $db );

                $image_row = mysql_fetch_object( $image_result );

                $image_url = "http://www.#.com/slir/w280/imagelib/" . $image_row->id . "_" . $image_row->filename;

                echo '<div class="grid_4"><a href="#"><img src="'.$image_url.'"></a></div>';        
            }
    else {
                echo '<div class="grid_4"><div class="news-placeholder"><span class="ss-icon">ellipsischat</span></div></div>';
        }

    echo '<div class="grid_7">';
    echo '<h2><a href="item-news.php?id='.$row->id.'">'.$row->title.'</a></h2>';

    $published_date = date('D, d M Y', strtotime($row->datein));
    echo '<p class="published-date">'.$published_date.'</p>';

    echo '</div>';
    echo '<div class="grid_1">';
    echo '<div class="news-item-vertical-sep">&nbsp;</div>';
    echo '<p></p>';
    echo '</div>';
    echo '</div>';

    $ad++;

    }

This works fine, but I need to take the first three news items and use this:

echo ' <div class="one-news-featured-article clearfix">';
    echo '  <div class="grid_12">';

    if( $row->imagelibid )
            {
                $imageid = intval( $row->imagelibid );
                $image_result = mysql_query( "SELECT * FROM imagelib WHERE id = {$imageid}", $db );

                $image_row = mysql_fetch_object( $image_result );

                $image_url = "http://www.#.com/slir/w280/imagelib/" . $image_row->id . "_" . $image_row->filename;

                echo '<div class="large-featured-image-container"><img src="'.$image_url.'">/div>'; 
            }   

    echo '      <div>';
    echo '        <h2><a href="item-news.php?id='.$row->id.'">'.$row->title.'</a></h2>';
    echo '      </div>';
    echo '    </div>';
    echo '  </div>';
    echo '  <div class="grid_6">';

Any help? Essentially, it needs to apply the second code to the first three items in the query, then follow through with the code included in the current while loop - like an offset I guess.

Thanks, R

回答1:

This is quite simple. I hope I understood your question correctly:

$i = 0;
while ( ( $row = mysql_fetch_object( $result ) ) !== false ) {
    if ($i < 3) {
        // First code
    } else {
        // Second code
    }
    $i += 1;
}

回答2:

Firstly, you should avoid using any mysql_ functions as they are all deprecated and will be removed from future versions of PHP. I'd recommend using PDO instead. See this tutorial to get started.

Then, it'll simply be a case of doing something like this:

foreach($db->query($query) as $index => $row) {
    if ($index < 3) {
        // first 3 items
    } else {
        // other items
    }
}

回答3:

You can do it easaly with an simple counter and an if statement:

$count = 0;

while(fetching) {
    if($count < 3) {
        // items 1, 2 and 3
    } else {
        // do normal
    }

    $count++;
}

来源：https://stackoverflow.com/questions/13838755/php-while-loop-split-into-two

标签

php

mysql

while-loop