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How to use tables in PHP programming?

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Jun 12, 2023 am 08:24 AM

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PHP is a common web development programming language that can process data and generate dynamic web pages. To better display data, developers often need to use tables. Tables are designed using HTML markup and CSS styles and can be created and manipulated in PHP programming.

This article will introduce how to use tables in PHP programming, including creating tables, adding data, setting styles and processing form data.

1. Create a table

To create a table, you need to use the HTML

tag. In PHP, you can use the echo statement to output HTML code to the browser. The following is a simple example that creates a table with 3 rows and 2 columns:

<?php
echo "<table>";
echo "<tr><td>1</td><td>2</td></tr>";
echo "<tr><td>3</td><td>4</td></tr>";
echo "<tr><td>5</td><td>6</td></tr>";
echo "</table>";
?>

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The above code uses three echo statements to output HTML code to the browser. The

mark represents a row in the table, and the

mark represents a cell. Use this method to create simple tables in PHP.

2. Add data

In order to add data to the table, you can use loops and arrays in PHP. Here is an example of creating a table with 5 rows and 3 columns and adding random numbers to it:

<?php
echo "<table>";
for ($i=0; $i<5; $i++) {
    echo "<tr>";
    for ($j=0; $j<3; $j++) {
        $num = rand(1, 100);
        echo "<td>$num</td>";
    }
    echo "</tr>";
}
echo "</table>";
?>

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The above code uses two loops, one for rows and one for columns. Inside the loop, use the rand function to generate random numbers and add them to the table. Use this method to create tables with dynamic data in PHP.

3. Set the style

To set the style of the table, you can use a CSS style sheet. When introducing CSS style sheets into PHP, you need to use HTML's tag. The following is an example of setting the background color and font of the table:

<?php
echo '<link rel="stylesheet" type="text/css" href="style.css">';
echo "<table class='myTable'>";
for ($i=0; $i<5; $i++) {
    echo "<tr>";
    for ($j=0; $j<3; $j++) {
        $num = rand(1, 100);
        echo "<td>$num</td>";
    }
    echo "</tr>";
}
echo "</table>";
?>

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The above code first introduces a CSS style sheet named style.css. In HTML, use the class attribute to style elements. In this example, a class named myTable is added to the table. In the CSS style sheet, you can use this class to set the style of the table:

.myTable {
    background-color: #ccc;
    font-size: 20px;
}

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The above CSS code sets the background color of the table to gray and the font size to 20 pixels. Use this method to create beautiful and consistent tables in PHP.

4. Processing form data

Forms are one of the most commonly used elements in Web development. Therefore, it is also very important to know how to handle form data in PHP.

In PHP, form data can be obtained through the $_POST array. In the following example, we will create a table and an HTML page containing the form. When the user submits the form, the user input will be processed in PHP and the results will be displayed in the form:

HTML code:

<form method="post">
    <input type="text" name="num1">
    <input type="text" name="num2">
    <input type="submit" name="submit" value="Add">
</form>

<table>
    <?php
    if (isset($_POST['submit'])) {
        $num1 = $_POST['num1'];
        $num2 = $_POST['num2'];
        $sum = $num1 + $num2;
        echo "<tr><td>$num1</td><td>+</td><td>$num2</td><td>=</td><td>$sum</td></tr>";
    }
    ?>
</table>

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The above code will create a box with two input boxes and a submit Button form. When the user clicks the submit button, the user input is processed in the PHP code, the sum of the two numbers is calculated, and the result is added to the table. Use this method to create interactive forms in PHP and interact with users.

Summary:

Tables are very common in web development and are a useful way to display data. In PHP programming, tables can be created and manipulated using HTML markup and CSS styles. This article explains how to create tables, add data, set styles, and process form data in PHP. Whether you are a beginner or an experienced developer, mastering these tips will help you create better web applications.

The above is the detailed content of How to use tables in PHP programming?. For more information, please follow other related articles on the PHP Chinese website!

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