如何在表格内做一个菱形图案/形状（星号）？ （html + php）

Question

我必须制作一个钻石形的星号，用于表格内的循环。 星号前后必须有空格<td>空格，并使其看起来中心为，所以它看起来像一颗钻石。我怎么做？ （我用PHP的HTML代码中。）

代码没有<tr>和<td>标签，它看起来像一颗钻石，因为它是居中对齐：

<center> 
<?php 
echo "<table border = 1>"; 

    // loop for the pyramid 

     for($i = 1; $i <= 10; $i += 2) { 
      for($j = 1; $j <= $i; $j++) { 
       echo "* "; 
      } 
     echo "<br />"; 
     } 

    // loop for the inverted pyramid, so it looks like a diamond 

    for($i = 7; $i >= 1; $i -= 2) { 
     for($j = 1; $j <= $i; $j++) { 
      echo "* "; 
     } 
    echo "<br />"; 
    } 

echo "</table>"; 
?> 
</center> 

代码与<tr>和<td>标签，需要“空格“为它看起来像它的中心对齐：

<?php 
echo "<table border = 1>"; 

    // loop for the pyramid 

    echo "<tr>"; 
      for($i = 1; $i <= 10; $i += 2) { 
      echo "<tr>"; 
       for($j = 1; $j <= $i; $j++) { 
        echo "<td>* </td>"; 
       } 
      echo "</tr>"; 
     } 
    echo "</tr>"; 

    // loop for the inverted pyramid, so it looks like a diamond 

    for($i = 7; $i >= 1; $i -= 2) { 
    echo "<tr>"; 
     for($j = 1; $j <= $i; $j++) { 
      echo "<td>* </td>"; 
     } 
    echo "<br />"; 
    echo "</tr>"; 
    } 

echo "</table>"; 
?> 

请帮助！

Answer 1

这是新的代码与您的解决方案。我已经添加逻辑把空白td向前和向后*

<?php 
echo "<table border = 1>"; 

    // loop for the pyramid 

    echo "<tr>"; 
    $max = $initAmount = 10; 
      for($i = 1; $i <= $initAmount; $i += 2) { 
       $max = $max -2; 

        $halfTD = (int)$max/2; 
      echo "<tr>"; 
      for($b = 1; $b <= $halfTD; $b++){ 
         echo "<td></td>"; 
        } 
       for($j = 1; $j <= $i; $j++) { 


        echo "<td>* </td>"; 
       } 
       for($b = 1; $b <= $halfTD; $b++){ 
         echo "<td></td>"; 
        } 
      echo "</tr>"; 
     } 
    echo "</tr>"; 

    // loop for the inverted pyramid, so it looks like a diamond 
$max = $initAmount = 10; 
    for($i = 7; $i >= 1; $i -= 2) { 
     $max = $max -2; 
     $diff = $initAmount - $max; 
     $blankTd = $diff/2; 

    echo "<tr>"; 
     for($b = 1 ; $b <= $blankTd; $b++){ 
      echo "<td></td>"; 
     } 
     for($j = 1; $j <= $i; $j++) { 
      echo "<td>* </td>"; 
     } 
     for($b = 1 ; $b <= $blankTd; $b++){ 
      echo "<td></td>"; 
     } 
    echo "</tr>"; 
    } 

echo "</table>"; 
?>