How to set the width and height of the table in php

PHP is a scripting language widely used in server-side web development. It can handle rich data types and multiple databases such as MySQL. In website development, tables are a very common element, which can be used to display data, layout, etc. However, with the continuous development of web applications, we need to set the width and height of the table through code. In this article, we will explain in detail how to set the width and height of the table in PHP with examples.

1. Standard syntax of tables in HTML language

Before introducing how to set the width and height of tables in PHP, we need to first understand the standard syntax of tables in HTML language.

table is the tag of the table in HTML, tr is the row tag under the table tag, and td is the column tag under the tr tag. A basic table code is as follows:

<table>
  <tr>
    <td>第一列</td>
    <td>第二列</td>
  </tr>
  <tr>
    <td>第三列</td>
    <td>第四列</td>
  </tr>
</table>

This is a relatively simple table. You can see that there are two tags under the table, that is, two rows, and there are two < under each row. td> label, that is, two columns. Of course, we can set the width and height of the table through CSS.

2. Set the table width and height in PHP

1. Set the table width

In PHP, before creating and rendering the table again, we need to define the width of the table. This can be achieved by setting the $width variable. The code is as follows:

<?php
  $width = "400px";
?>

This is to define a variable with a table width of 400px. Next, we use HTML language to create the table and apply this variable to the table. The code is as follows:

<table width="<?php echo $width; ?>">
  <tr>
    <td>第一列</td>
    <td>第二列</td>
  </tr>
  <tr>
    <td>第三列</td>
    <td>第四列</td>
  </tr>
</table>

In this way, the width of the table is set to 400px.

2. Set the table height

Similar to setting the width, we can also set the height of the table by defining the variable $height and then applying it to the table. The code is as follows:

<?php
  $height = "200px";
?>

This is to define a variable with a table height of 200px. Then, we can apply it to the table, the code is as follows:

<table height="<?php echo $height; ?>">
  <tr>
    <td>第一列</td>
    <td>第二列</td>
  </tr>
  <tr>
    <td>第三列</td>
    <td>第四列</td>
  </tr>
</table>

In this way, the height of the table is set to 200px.

3. Set the width and height of the table at the same time

In addition to setting the width or height of the table separately, we can also set the width and height of the table at the same time. The code is as follows:

<?php
  $width = "400px";
  $height = "200px";
?>

This defines a variable with a width of 400px and a height of 200px. We can then apply the two variables to the table with the following code:

<table width="<?php echo $width; ?>" height="<?php echo $height; ?>">
  <tr>
    <td>第一列</td>
    <td>第二列</td>
  </tr>
  <tr>
    <td>第三列</td>
    <td>第四列</td>
  </tr>
</table>

In this way, we set the width and height of the table at the same time.

3. Summary

Through the above examples, we can see that setting the width and height of the table in PHP is very simple. You only need to define variables and apply them to the table labels. At the same time, we can also use CSS to further beautify the table and achieve more effects. Tables are a very commonly used element in web development. Knowing how to set their width and height is one of the most important skills for web developers. I hope this article will inspire readers.

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