从PHP数组生成HTML表 [英] Generating HTML table from PHP array

问题描述

我不明白这一点.我需要解决看似简单的问题，但这超出了我的逻辑.我需要编写一个函数:table_columns($ input，$ cols)，该函数将输出一个表(示例):

I don't understand this. I need to solve seemingly simple problem, and yet it's beyond my logic. I need to write a function: table_columns($input, $cols) which would output a table(example):

$input = array('apple', 'orange', 'monkey', 'potato', 'cheese', 'badger', 'turnip');
$cols = 2;

预期输出:

<table>
  <tr>
    <td>apple</td>
    <td>cheese</td>
  </tr>
  <tr>
    <td>orange</td>
    <td>badger</td>
  </tr>
  <tr>
    <td>monkey</td>
    <td>turnip</td>
  </tr>
  <tr>
    <td>potato</td>
    <td></td>
  </tr>
</table>

推荐答案

这样思考.假设您有一系列这样的项目:

Think about it like this. Say you have an array of items like this:

a, b, c, d, e, f, g, h, i, j, k

将列设置为 2 时，您需要按以下顺序呈现它们:

With columns set to 2, you'd need to render them in this order:

a  g
b  h            0 6 1 7 2 8 3 9 4 10 5
c  i      --->  a g b h c i d j e  k f
d  j
e  k
f

包含三列:

a  e  i
b  f  j        0 4 8 1 5 9 2 6 10 3 7
c  g  k   ---> a e i b f j c g  k d h
d  h

因此，大致而言:

function cells ($input, $cols) {

  $num = count($input);
  $perColumn = ceil($num / $cols);

  for ($i = 0; $i < $perColumn; $i++) {

     echo "<tr>";

     for ($j = 0; $j < $cols; $j++) {
        // you'll need to put a check to see you haven't gone past the
        // end of the array here...

        echo "<td>" . $input[$j * $perColumn + $i] . "</td>";
     }
     echo "</tr>";
  }
}

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