Teach Me To Convert OOP Pagination To Procedural

phpsane · February 2, 2019

Folks,

Look what I found here:
https://codeshack.io/how-to-create-pagination-php-mysql/
It is oop pagination using mysqli.
I only know mysqli and procedural. So, teach me to convert it to procedural.

My procedural style code is this alongside their OOP:

	<?php 
if (!$conn) 
{ 
    $error = mysqli_connect_error(); 
    $errno = mysqli_connect_errno(); 
    print "$errno: $error\n"; 
    exit(); 
} 
	// Get the total number of records from our table "students".
$total_pages = $conn->query('SELECT * FROM browsing_histories')->num_rows; //I NEED HELP TO SUBSTITUTE THIS TO PROCEDURAL STYLE
	// Check if the page number is specified and check if it's a number, if not return the default page number which is 1.
$page = isset($_GET['page']) && is_numeric($_GET['page']) ? $_GET['page'] : 1;
	// Number of results to show on each page.
$num_results_on_page = 5;
	
//    if ($stmt = $conn->prepare('SELECT * FROM following_histories ORDER BY id LIMIT ?,?')) {
    if($query = "SELECT id,date_and_time,query_type,followed_word,query_string,browsed_page_original,browsed_page_converted,referral_page_original,referral_page_converted,username,gender,age_range,date_of_birth,skin_complexion,height,weight,sexual_orientation,religion,education,profession,marital_status,working_status,country_of_birth,home_town,home_neighbourhood,home_borough,home_council,home_city,home_county,home_district,home_region,home_state,home_country FROM browsing_histories WHERE username = ? ORDER BY id LIMIT ? OFFSET ?"){ //my substitution of above line
    $stmt = mysqli_prepare($conn,$query); //MY SUBSTITUTION OF ABOVE LINE
    
    // Calculate the page to get the results we need from our table.    
    $calc_page = ($page - 1) * $num_results_on_page;
    
    //$stmt->bind_param('ii', $calc_page, $num_results_on_page);
    mysqli_stmt_bind_param($stmt,'sii',$followee_username,$calc_page,$num_results_on_page); //MY SUBSTITUTION OF ABOVE LINE
    
    //$stmt->execute(); 
    mysqli_stmt_execute($stmt); //MY SUBSTITUTION OF ABOVE LINE
    
    // Get the results...
    //$result = $stmt->get_result();
    $result = mysqli_stmt_get_result($stmt)    //MY SUBSTITUTION OF ABOVE LINE
    
    ?>
    <!DOCTYPE html>
    <html>
        <head>
            <title>PHP & MySQL Pagination by CodeShack</title>
            <meta charset="utf-8">
            <style>
            html {
                font-family: Tahoma, Geneva, sans-serif;
                padding: 20px;
                background-color: #F8F9F9;
            }
            table {
                border-collapse: collapse;
                width: 500px;
            }
            td, th {
                padding: 10px;
            }
            th {
                background-color: #54585d;
                color: #ffffff;
                font-weight: bold;
                font-size: 13px;
                border: 1px solid #54585d;
            }
            td {
                color: #636363;
                border: 1px solid #dddfe1;
            }
            tr {
                background-color: #f9fafb;
            }
            tr:nth-child(odd) {
                background-color: #ffffff;
            }
            .pagination {
                list-style-type: none;
                padding: 10px 0;
                display: inline-flex;
                justify-content: space-between;
                box-sizing: border-box;
            }
            .pagination li {
                box-sizing: border-box;
                padding-right: 10px;
                }
            .pagination li a {
                box-sizing: border-box;
                background-color: #e2e6e6;
                padding: 8px;
                text-decoration: none;
                font-size: 12px;
                font-weight: bold;
                color: #616872;
                border-radius: 4px;
            }
            .pagination li a:hover {
                background-color: #d4dada;
            }
            .pagination .next a, .pagination .prev a {
                text-transform: uppercase;
                font-size: 12px;
            }
            .pagination .currentpage a {
                background-color: #518acb;
                color: #fff;
            }
            .pagination .currentpage a:hover {
                background-color: #518acb;
            }
            </style>
        </head>
        <body>
            <table>
                <tr>
                    <th>Name</th>
                    <th>Age</th>
                    <th>Join Date</th>
                </tr>
                <?php while ($row = $result->fetch_assoc()): ?>
                <tr>
                    <td><?php echo $row['id']; ?></td>
                    <td><?php echo $row['followee_username']; ?></td>
                    <td><?php echo $row['follower_username']; ?></td>
                </tr>
                <?php endwhile; ?>
            </table>
            <?php if (ceil($total_pages / $num_results_on_page) > 0): ?>
            <ul class="pagination">
                <?php if ($page > 1): ?>
                <li class="prev"><a href="pagination.php?page=<?php echo $page-1 ?>">Prev</a></li>
                <?php endif; ?>
	                <?php if ($page > 3): ?>
                <li class="start"><a href="pagination.php?page=1">1</a></li>
                <li class="dots">...</li>
                <?php endif; ?>
	                <?php if ($page-2 > 0): ?><li class="page"><a href="pagination.php?page=<?php echo $page-2 ?>"><?php echo $page-2 ?></a></li><?php endif; ?>
                <?php if ($page-1 > 0): ?><li class="page"><a href="pagination.php?page=<?php echo $page-1 ?>"><?php echo $page-1 ?></a></li><?php endif; ?>
	                <li class="currentpage"><a href="pagination.php?page=<?php echo $page ?>"><?php echo $page ?></a></li>
	                <?php if ($page+1 < ceil($total_pages / $num_results_on_page)+1): ?><li class="page"><a href="pagination.php?page=<?php echo $page+1 ?>"><?php echo $page+1 ?></a></li><?php endif; ?>
                <?php if ($page+2 < ceil($total_pages / $num_results_on_page)+1): ?><li class="page"><a href="pagination.php?page=<?php echo $page+2 ?>"><?php echo $page+2 ?></a></li><?php endif; ?>
	                <?php if ($page < ceil($total_pages / $num_results_on_page)-2): ?>
                <li class="dots">...</li>
                <li class="end"><a href="pagination.php?page=<?php echo ceil($total_pages / $num_results_on_page) ?>"><?php echo ceil($total_pages / $num_results_on_page) ?></a></li>
                <?php endif; ?>
	                <?php if ($page < ceil($total_pages / $num_results_on_page)): ?>
                <li class="next"><a href="pagination.php?page=<?php echo $page+1 ?>">Next</a></li>
                <?php endif; ?>
            </ul>
            <?php endif; ?>
        </body>
    </html>
	<?php
//$stmt->close();
mysqli_stmt_close($stmt); //MY SUBSTITUTION OF ABOVE LINE
}
?>

phpsane · February 2, 2019

I commented-out their lines and added mine beneath their lines that I substituted.

requinix · February 2, 2019

The only difference between the "OOP" and "procedural" versions is that one uses $object->function_name($arguments) and the other uses similar_function_name($object, $arguments).

I didn't look hard at what you did but I did see you did more than just change the function calls.

phpsane · February 3, 2019

14 hours ago, requinix said:

The only difference between the "OOP" and "procedural" versions is that one uses $object->function_name($arguments) and the other uses similar_function_name($object, $arguments).

I didn't look hard at what you did but I did see you did more than just change the function calls.

If you look closely then you will see I originally did what you suggested. However, saying all this, I am stuck on this line and so care to help me convert that ?

$total_pages = $conn->query('SELECT * FROM browsing_histories')->num_rows; //I NEED HELP TO SUBSTITUTE THIS TO PROCEDURAL STYLE

phpsane · February 3, 2019

I think this line found in the tutorial is an error:

$total_pages = $conn->query('SELECT * FROM browsing_histories')->num_rows;

It should not have been $total_pages but $total_records. Correct ?
Tutorial here:
https://codeshack.io/how-to-create-pagination-php-mysql/

requinix · February 3, 2019

8 hours ago, phpsane said:
If you look closely then you will see I originally did what you suggested. However, saying all this, I am stuck on this line and so care to help me convert that ?
$total_pages = $conn->query('SELECT * FROM browsing_histories')->num_rows; //I NEED HELP TO SUBSTITUTE THIS TO PROCEDURAL STYLE
	

->query is mysqli_query(), ->num_rows is mysqli_num_rows().'

8 hours ago, phpsane said:
I think this line found in the tutorial is an error:
$total_pages = $conn->query('SELECT * FROM browsing_histories')->num_rows; 
It should not have been $total_pages but $total_records. Correct ?
Tutorial here:
https://codeshack.io/how-to-create-pagination-php-mysql/

I think you should be able to answer that on your own.

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Teach Me To Convert OOP Pagination To Procedural

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