first commit

tutorial.php

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+<?php
+require_once('database.php'); //connect to your database in this file
+define("NUMBER_PER_PAGE", 5); //number of records per page of the search results
+
+/****
+* Purpose: paginate a result set
+* Precondition: current page, total records, extra variables to pass in the page string
+* Postcondition: pagination is displayed
+****/
+function pagination($current_page_number, $total_records_found, $query_string = null)
+{
+    $page = 1;
+
+    echo "Page: ";
+
+    for ($total_pages = ($total_records_found/NUMBER_PER_PAGE); $total_pages > 0; $total_pages--)
+    {
+        if ($page != $current_page_number)
+            echo "<a href=\"?page=$page" . (($query_string) ? "&$query_string" : "") . "\">";
+
+        echo "$page ";
+
+        if ($page != $current_page_number)
+            echo "</a>";
+
+        $page++;
+    }
+}
+
+echo "<h2>Search Members</h2>
+<form action='{$_SERVER['PHP_SELF']}' method='post'>
+    <p>ID: <input type='text' name='id' /></p>
+    <p>Username: <input type='text' name='username' /></p>
+    <p>Email: <input type='text' name='email' /></p>
+    <p align='center'>
+        <input type='submit' name='submit' value='Search' />
+    </p>
+</form>";
+
+/**
+* Display Search Results Below Here
+**/
+
+//load the current paginated page number
+$page = ($_GET['page']) ? $_GET['page'] : 1;
+$start = ($page-1) * NUMBER_PER_PAGE;
+
+/**
+* if we used the search form use those variables, otherwise look for
+* variables passed in the URL because someone clicked on a page number
+**/
+$id = ($_POST['id']) ? $_POST['id'] : $_GET['id'];
+$username = ($_POST['username']) ? $_POST['username'] : $_GET['username'];
+$email = ($_POST['email']) ? $_POST['email'] : $_GET['email'];
+
+$sql = "SELECT * FROM members WHERE 1=1";
+
+if ($id)
+    $sql .= " AND id='" . mysql_real_escape_string($id) . "'";
+
+if ($username)
+    $sql .= " AND username='" . mysql_real_escape_string($username) . "'";
+
+if ($email)
+    $sql .= " AND email='" . mysql_real_escape_string($email) . "'";
+
+//this return the total number of records returned by our query
+$total_records = mysql_num_rows(mysql_query($sql));
+
+//now we limit our query to the number of results we want per page
+$sql .= " LIMIT $start, " . NUMBER_PER_PAGE;
+
+/**
+* Next we display our pagination at the top of our search results
+* and we include the search words filled into our form so we can pass
+* this information to the page numbers. That way as they click from page
+* to page the query will pull up the correct results
+**/
+pagination($page, $total_records, "id=$id&username=$username&email=$email");
+
+$loop = mysql_query($sql)
+    or die ('cannot run the query because: ' . mysql_error());
+
+while ($record = mysql_fetch_assoc($loop))
+    echo "<br/>{$record['id']}) " . stripslashes($record['username']) . " - {$record['email']}";
+
+echo "<center>" . number_format($total_records) . " search results found</center>";
+
+pagination($page, $total_records, "id=$id&username=$username&email=$email");
+?>