使用PHP设置表中的列数

Question

I have a piece of code which reads an XML catalog file with SimpleXMLElement and prints out the containing products of that catalog into a css styled table on a website.

The code outputs every product next to each other. However I only want to show 4 products in a row.

I therefore need to insert some

<tr> </tr> 

tags following every 4 (or x) number of products in the array.

How should I do this? My code is as follows:

echo '<table class="products">';

foreach (getProdutcsFromCatalog($grpName) as $product) {


                        $output = '

                        <td>
                            <h2>' .$product->title .'</h2>
                            <div class="img">
                                <img src="' .$product->img . '" height="150" width="100" class =""/>
                            </div>  
                            <div>
                                '.$product->description.'
                            </div>
                            </div>
                            <div class="price">
                                <b>
                                    '.$product->price . ' DKK' . ' 
                                </b>
                            </div>
                            <div class="addToCart">
                                <a href="#">Læg i kurv</a>
                            </div>
                        </td>   

                        ';

                        echo $output;
                    }

                echo '</table>';

Answer 1

Initialise $i = 0; before starting the foreach loop. Then change your

    echo $output;
}

to:

    if( $i % 4 == 0 ) echo "<tr>";
    echo $output;
    if( $i % 4 == 3 ) echo "</tr>";
    $i++;
}