A variable $irn input by the users, I need to pass the variable $irn one by one to a SQL and display the result in GR textbox after clicking the button
Generate Result, I want to split the $irn to an array so I can pass it one by one to the SQL query.
I tried mb_split and preg_split
<?php
include "big2gb.php";
ini_set('default_charset', 'utf-8');
$result = $_GET["listIRN"];
$irn = $_POST["irn"];
$serverName = "192.168.4.75";
$connectionInfo = array( "Database"=>"SAFHKG", "UID"=>"sa1", "PWD"=>"Azsxdc11", "CharacterSet" => "UTF-8");
$conn = sqlsrv_connect( $serverName, $connectionInfo );
if($conn){
//echo "connect DB success!!!<br />";
}
else
{
//echo "successfully failed!!!<br />";
die(print_r(sqlsrv_errors(),true));
}
//find irn
$sql="Select Top 1
[Expression] = CONCAT(OFFICIALNUMBER, ' for ', TITLE, ' in Class ', LOCALCLASSES)
From CASES
INNER JOIN OFFICIALNUMBERS On CASES.CASEID = OFFICIALNUMBERS.CASEID
Where NUMBERTYPE IN ('R', 'A') and CASES.IRN = ('".$array[$i]."')
Order By
CASE
When NumberType = 'R' then -2
When Numbertype = 'A' then -1
End";
echo"
<table>
<form action='test22.php' method='post'>
<tr>
<td>IRN:</td>
<td>
<input type='text' id='txtIRN' value='' style='text-transform:uppercase' >
<input type='button' value='Add IRN' onClick='addIRN()' name=''/>
<input type='submit' value='Genarate Result' id='GR' name=''/>
</td>
</tr>
<tr><tr><tr>
<td><td>
<textarea id='listIRN' name='irn' rows='40' cols='30' >
</textarea><textarea id='GR' rows='40' cols='80' ></textarea>
</td></td>
</tr></tr></tr>
</form>
</table><br/>";
echo"
<script type='text/javascript'>
function addIRN(irn) {
var IRNText = document.getElementById(\"txtIRN\").value;
var IRNList = document.getElementById(\"listIRN\").value;
var irn = IRNList + '\\n' + IRNText;
document.getElementById(\"listIRN\").value = irn.trim().toUpperCase();
}
</script>";
//////////////////your entered//////////////////*
echo "<p>You entered:<p>";
$array = mb_split('\\n', $irn);
foreach($array as $line)
{
$array = explode('\s', $irn);
echo "$line\n";
}
//////////////////////////////////////////////
print_r ($array);
//echo $array[3];
//echo $array[0];
for ($i = 0; $i <= 20; $i++)
{
$result = sqlsrv_query($conn, $sql );
while( $row = sqlsrv_fetch_array( $result, SQLSRV_FETCH_ASSOc) )
{
echo " ". $row["Expression"] ." <br />";
}
}
$conn->close();
?>
strong text
User input will be like TM1150CN31 TM2846CN35 TM2855CN35 TM2865CN35 TM2874CN43 TM3367CN05
You can use explode function like below
$var = 'TM1150CN31 TM2846CN35 TM2855CN35 TM2865CN35 TM2874CN43 TM3367CN05';
$array = explode(' ', $var);
Out put will be like
Array
(
[0] => TM1150CN31
[1] => TM2846CN35
[2] => TM2855CN35
[3] => TM2865CN35
[4] => TM2874CN43
[5] => TM3367CN05
)
I want to display checked checkbox which are stored as values in a mysql database.
For now the table stores the value of the checkbox being checked in the database. The header and first column are fetched from three different tables in the database. While the values of the checked check-boxes gets saved in a same table.
Here's the code for inserting the data.
$active = "CourseReport";
require_once 'pages/header.php';
require_once './functions/schema-functions.php';
require_once './functions/report-functions.php';
$course = Schema::getCourseReport();
$objective = Schema::getObjective();
$goals = Schema::getGoals();
$mainobj = Schema::getMainObjectives();
$subobj = Schema::getSubObjectives();
?>
<form id="addReport" action ='./functions/report-functions.php' method="post">
<table id="table1" class="table table-hover">
<thead>
<?php
echo '<tr><th>Goals</th>';
for ($i = 0; $i < count($course); $i++) {
echo '<th id = "rotate1">'. $course[$i]->commonName . '</th>';
}
echo '</tr>';
?>
</thead>
<tbody>
<?php
for ($y = 0; $y < count($goals); $y++) {
echo '<tr class="clickable"><th class="toggle">Goal#'.$goals[$y]['GoalId'].':'." " .' '.$goals[$y]['Goals'].'</th>
</tr>';
?>
<?php
for( $z = 0; $z < count($mainobj); $z++){
if($mainobj[$z]['GoalId'] == $goals[$y]['GoalId']) {
echo '<tr class="expander"><th class=row-header>Objective#'.$mainobj[$z]['MainObjId'].':'." ".' '.$mainobj[$z]['MainObjectives'].'</th>
</tr>';
?>
<?php
for ($j = 0; $j< count($subobj); $j++) {
if($mainobj[$z]['MainObjId'] == $subobj[$j]['MainObjId']){
echo '<tr class="expander"><td class=row-header>'.$subobj[$j]['SubObjId'].' ) '.$subobj[$j]['SubObjectives'].' </td>';
for ($x = 0; $x < count($course); $x++) {
echo "<td><input name='check[]' type=checkbox value=c".$course[$x]->courseId."-o".$subobj[$j]['SubObjId']." id=checked></td>";
}
echo '</tr>';
}
}
}
}
}
?>
</tbody>
</table>
<button class="button" name= "submit" value= "Submit">Submit</button>
</form>
report-functions.php
if( isset( $_POST['submit'], $_POST['check'] ) ){
try{
require_once 'db-connect.php';
$conn = DatabaseConnection::getConnection();
$sql= " insert into `Report` (`ColRow`) values (:value) ";
$stmt = $conn->prepare( $sql );
if( $stmt ){
$conn->beginTransaction();
foreach( $_POST['check'] as $index => $value ) {
$result = $stmt->execute( [ ':value' => $value ] );
if( !$result ) {
echo '
<script>
alert("Error, please try submitting again. Error code 1");
window.history.back();
</script>';
}
}
$conn->commit();
echo '<script>
alert("Report was submitted successfully.");
window.location = ".../";
</script>';
}
} catch( Exception $e ){
$conn->rollback();
exit( $e->getMessage() );
}
I expect that once I submit the table, the table should load the same table with the checked checkboxes. I should be able to make the changes and submit the table over and over again.
Please comment if I need to provide any additional information.
When you display your page (in your first section of code), at some point you do this:
echo "<td><input name='check[]' type=checkbox value=c".$course[$x]->courseId."-o".$subobj[$j]['SubObjId']." id=checked></td>";
The value is set to:
value=c"c.$course[$x]->courseId."-o".$subobj[$j]['SubObjId']";
This value is where you get the checked or not value you mentioned in the comments (like c1-o1.1).
Right. So before you do that echo, add a new if condition.
$value = "c$course[$x]->courseId" . "-o$subobj[$j]['SubObjId']";
if (verify_checked($value)) {
$checked_code = "checked=\"checked\"";
}
else {
$checked_code = "";
}
echo "<td><input name='check[]' type=checkbox value=$value id=checked $checked_code ></td>";
The verify_checked(value) function does (from what I understand of your database, you keep the "grid location" of checked elements):
function verify_checked($value)
{
// Connect to the database if needed
// Perform: SELECT count($value) FROM Report
// If the result is >0, return TRUE
// Else return FALSE
}
The idea here is to query the database every time your are about to echo the <input> element.
Note for concatenating text, I find it more legible to put spaces around the . to clearly split what is part of the text and what is the concatenation dot.
As mentioned previously, indentation is critical for understanding of the different contexts. Until I indented your code, I had not realized how the different loops worked in relation to the others.
I'm using HTML, PHP and Ajax to toggle switch in my website. However, only the top most switch is functional. The reason why I use PHP is to display results from my DB, and Ajax is there to toggle switch without reloading the website. Thanks in advance and comment for any questions!
Photo Here :D I have three rows in the DB. Data retrieve fine. Top button works!
ps : removed all classes for simplicity
About main.php and recipe.inc.php. They are separated because recipe.inc.php is used in many documents.
main.php
<?php
$conn = mysqli_connect(localhost,****,****,loginsystem);
//DB connection
$query="SELECT * FROM `recipe` WHERE creator='$uid'";
//SQL Query
$results = mysqli_query($conn,$query);
$array = array();
//Array to save key column of the result in order
while ($row = mysqli_fetch_assoc($results)) {
for ($i = 0; $i < count($row[recipe_ID]); $i++) {
$array[$i] = $row[recipe_ID];
echo '<input type="hidden" id="recipe_ID" name="recipe_ID" value="';
echo $array[$i];
echo '">';
//might confuse you. this is just to hand over recipe_ID to recipe.inc.php
echo '<li>';
echo '<label>';
if($row[status]==1){
echo '<input type="checkbox" id="checkStatus" name="checkStatus" checked="">';
//In case where row[status] is equal to 1. means it's ON
}else{
echo '<input type="checkbox" id="checkStatus" name="checkStatus">';
//OFF otherwise
}
echo '<span class="switcher-indicator"></span>';
echo '</label>';
echo '</li>';
}
}
?>
recipe.inc.php
<?php
if(isset($_POST['checkStatus'])){
$recipe_ID = $_POST['recipe_ID']);
if($_POST['checkStatus']=='ON'){
$status = 1; //to save in DB as boolean. if ON->1
}else if($_POST['checkStatus']=='OFF'){
$status = 0; //if OFF->0
}
$sql = "UPDATE `recipe` SET `status`=$status WHERE creator=$uid AND recipe_ID=$recipe_ID";
//nev
mysqli_query($conn,$sql);
}
?>
and the Ajax part is saved in another js file.
recipe.js
$(document).ready(function() {
$('#checkStatus').on('click', function() {
var checkStatus = this.checked ? 'ON' : 'OFF';
var recipe_ID = $("#recipe_ID").val();
$.post("loginsystem/includes/recipe.inc.php", {
"checkStatus": checkStatus,
"recipe_ID": recipe_ID
},
function(data) {
$('#checkStatus').html(data);
});
});
});
That sounds like all the switches have the same ID. If that is the case, only the first one will work.
Try changing your code to look like this:
<?php
$conn = mysqli_connect(localhost,****,****,loginsystem);
//DB connection
$query="SELECT * FROM `recipe` WHERE creator='$uid'";
//SQL Query
$results = mysqli_query($conn,$query);
$cnt = 1;
$array = array();
//Array to save key column of the result in order
while ($row = mysqli_fetch_assoc($results)) {
for ($i = 0; $i < count($row[recipe_ID]); $i++) {
$array[$i] = $row[recipe_ID];
echo '<input type="hidden" id="recipe_ID-' .$cnt. '" name="recipe_ID" value="'; <============== HERE
echo $array[$i];
echo '">';
//might confuse you. this is just to hand over recipe_ID to recipe.inc.php
echo '<li>';
echo '<label>';
if($row[status]==1){
echo '<input type="checkbox" id="checkStatus-' .$cnt. '" name="checkStatus" checked="">'; //<============== HERE
//In case where row[status] is equal to 1. means it's ON
}else{
echo '<input type="checkbox" id="checkStatus-' .$cnt. '" name="checkStatus">'; //<================ HERE
//OFF otherwise
}
echo '<span class="switcher-indicator"></span>';
echo '</label>';
echo '</li>';
}
$cnt++; <=========== HERE
}
?>
I've been around for years on Stack but this is my first time posting. I'm working on a website (php + mysql) and the following problem is driving me absolutely nuts.
I have a table with 2 columns: Size and Amount. The table is generated by a basic php script simply outputting values stored in the database as rows in the table. Super basic, no fancy stuff there:
SELECT Size, Amount FROM database WHERE product = 'product123' ORDER BY Size ASC
The php echo outputs an html table displaying Size and the corresponding available packs (Amount).
Echo '<td>'.$record['size'].'</td><td>'.$record['amount'].'</td>'
Some Sizes are available in different Amounts, so therefore a particular Size can appear multiple times. Example:
Size | Amount
1 | 10
1 | 50
2 | 10
2+ | 10
3 | 40
3+ | 25
3+ | 40
4+ | 25
What I'm looking to achieve is that rows containing the same Size have the same background color. So it should alternate, grouped by Size, and this is irregular unfortunately. Example:
Size | Amount
1 | 10 < yellow
1 | 50 < yellow
2 | 10 < transparent
2+ | 10 < yellow
3 | 40 < transparent
3+ | 25 < yellow
3+ | 40 < yellow
4+ | 25 < transparent
So if the next Size is different from the preceding one, the row background color should change. This way a single Size is alternately highlighted as a group. Note that Size 2 and 2+ (same for 3 and 3+) are considered to be different sizes, hence the background color should change.
I can't figure out how to achieve this with php. The difficulty is that I can't use an evaluation based on odd/even since there sometimes is a "+" involved, making not all Sizes numeric values. Changing the naming scheme to get rid of that "+" is not an option unfortunately.
I was thinking of somehow having php check, while generating the table row by row, if the next outputted Size is identical to the preceding one. If yes: no change in bg-color. If no: change bg-color. However I can't figure out what the best way is to code something like this. Any pointers in the right direction are much appreciated.
Just a MCVE:
// your data
$records[] = array('size' => "1");
$records[] = array('size' => "1");
$records[] = array('size' => "2");
$records[] = array('size' => "2+");
$records[] = array('size' => "3");
$records[] = array('size' => "3+");
$records[] = array('size' => "3+");
$records[] = array('size' => "4");
$lastSize = $records[0]['size'];
$color = "yellow";
foreach ($records as $record) {
if ($lastSize != $record['size']) {
$lastSize = $record['size'];
if ($color == "yellow") $color = "transparent";
else $color = "yellow";
}
$lastSize == $record['size'];
echo $record['size'].' - '.$color.'<br>';
}
// OUTPUT:
// 1 - yellow
// 1 - yellow
// 2 - transparent
// 2+ - yellow
// 3 - transparent
// 3+ - yellow
// 3+ - yellow
// 4 - transparent
Ok, we'll start at the end. You probably want to put your color on the <tr>. The cleanest way to do it would be using css classes.
if ($newSize) {
echo '<tr class="tranparentRow">';
} else {
echo '<tr class="yellowRow">';
}
We'll figure out how to get the right value into $newSize in a moment. Next, we need the css for classes above, so make sure this is in your styles somewhere:
.transparentRow {
background-color: transparent;
}
.yellowRow {
background-color: yellow;
}
Ok, lets rip the + off the size:
$plainSize = trim($record['size'], '+')
Ok, we use that for comparison, using an ever changing $oldSize valiable. Here is a full, functional, block:
$oldSize = 0;
foreach($whatever as $record) {
$plainSize = trim($record['size'], '+')
if ($plainSize == $oldSize) {
$newSize = false;
} else {
$newSize = true;
}
$oldSize = $plainSize;
if ($newSize) {
echo '<tr class="tranparentRow">';
} else {
echo '<tr class="yellowRow">';
}
echo '<td>'.$record['size'].'</td><td>'.$record['amount'].'</td>';
echo '</td>';
}
Some cleanup can lead to this:
$oldSize = 0;
foreach($whatever as $record) {
$plainSize = trim($record['size'], '+')
if ($plainSize == $oldSize) {
echo '<tr class="tranparentRow">';
} else {
echo '<tr class="yellowRow">';
}
$oldSize = $plainSize;
echo '<td>'.$record['size'].'</td><td>'.$record['amount'].'</td>';
echo '</td>';
}
I hope that helped not just with this problem, but with an example of how you can approach many other problems. Start at the end, work your way back.
As my comment suggested, use a double foreach() + implode() (and yet another solution):
<?php
$array[] = array("size"=>1,"amount"=>50);
$array[] = array("size"=>2,"amount"=>10);
$array[] = array("size"=>"2+","amount"=>10);
$array[] = array("size"=>3,"amount"=>40);
$array[] = array("size"=>"3+","amount"=>25);
$array[] = array("size"=>"3+","amount"=>40);
$array[] = array("size"=>"3+","amount"=>25);
$array[] = array("size"=>'4+',"amount"=>30);
// Sort by size
foreach($array as $row) {
$new[$row['size']][] = $row['amount'];
}
?>
<table>
<?php
$i = 0;
// Loop through the sorted groups
foreach($new as $size => $amts) {
// Determine odd or even
$color = ($i % 2 == 0)? "yellow":"transparent";
?> <tr>
<td class="<?php echo $color; ?>"><?php echo $size; ?></td>
<td class="<?php echo $color; ?>"><?php echo implode("</td>".PHP_EOL."</tr>".PHP_EOL."<tr>".PHP_EOL.'<td class="'.$color.'">'.$size.'</td><td class="'.$color.'">',$amts); ?></td>
</tr>
<?php $i++;
}
?>
</table>
You can do this using php sessions like this
session_start();
$_SESSION["pre_val"]='not set';
$_SESSION["pre_class"]='transparent';
//in your loop for showing table
//your loop starts
if($_SESSION["pre_val"]==$record['size']){
$suitable_class=$_SESSION["pre_class"];
}
else{
if($_SESSION["pre_class"]=='yellow'){$suitable_class='transparent';}
else{$suitable_class='yellow';}
}
//setting current values to session
$_SESSION["pre_class"] = $suitable_class;
$_SESSION["pre_val"] = $record['size'];
Echo '<tr class="$suitable_class"><td>'.$record['size'].'</td><td>'.$record['amount'].'</td></tr>';
//your loop ends
in your css
.yellow{background-color:yellow;}
.transparent{ background-color: rgba(255, 0, 0, 0.5);}
hope this solve your problem
Some for loop fun while printing out the table
$rows = array(
array("size"=>"1" ,"amount"=>"10"),
array("size"=>"1" ,"amount"=>"50"),
array("size"=>"2" ,"amount"=>"10"),
array("size"=>"2+","amount"=>"10"),
array("size"=>"3" ,"amount"=>"40"),
array("size"=>"3+","amount"=>"25"),
array("size"=>"3+","amount"=>"40"),
array("size"=>"4+","amount"=>"25")
);
echo "
<table>
<thead>
<tr><th>Size</th><th>Amount</th></tr>
</thead>
<tbody>";
$bgColors = ['transparent','yellow'];
$bgColor = 0;
echo "
<tr>
<td class='" . $bgColors[$bgColor] . "'>" . $rows[0]["size"] . "</td><td>" . $rows[0]["amount"] . "</td>
</tr>";
for($i = 1, $max = count($rows), $lastSize = $rows[0]; $i < $max; $lastSize = $rows[$i], $i++) {
if($rows[$i]["size"] !== $lastSize["size"])
$bgColor = ($bgColor + 1) % 2;
echo "
<tr>
<td style='background-color:" . $bgColors[$bgColor] . "'>" . $rows[$i]["size"] . "</td><td>" . $rows[$i]["amount"] . "</td>
</tr>";
}
echo "
</tbody>
</table>";
And an unasked for JS solution (assuming you've printed out the table as usual)
var rows = document.querySelectorAll('#sizeTable tbody td[name=size]');
var bgColors = ['transparent','yellow'];
var bgColor = 0;
for(var i = 1, lastSize = rows[0], max = rows.length; i < max; lastSize = rows[i],i++) {
if(rows[i].innerHTML !== lastSize.innerHTML) {
bgColor = (bgColor + 1) % 2;
}
rows[i].style['background-color'] = bgColors[bgColor];
}
you can keep the current size on a variable and if it changes you can change the color.
<html>
<head><title> Sample - Menukz </title></head>
<body>
<?php
/* Sample data array with size and amount */
$product['product123'] = array
(
array("size"=>"1", "amount"=>10),
array("size"=>"1", "amount"=>50),
array("size"=>"2", "amount"=>10),
array("size"=>"2+", "amount"=>10),
array("size"=>"3", "amount"=>40),
array("size"=>"3+", "amount"=>25),
array("size"=>"3+", "amount"=>40),
array("size"=>"4+", "amount"=>25)
);
$pre_size=0;
$pre_init=1;
echo "<table>";
foreach($product['product123'] as $row)
{
echo "<tr>";
/* Initialize */
if(strcmp($pre_size, $row['size']) !== 0 && $pre_init ===1)
{
$pre_size = $row['size'];
$pre_init = 0;
}
/* Change track */
if (strcmp($pre_size, $row['size']) !== 0 && $pre_init ===0)
{
echo "<td>Changed ... </td><td>". $row['size'] . "</td><td>" . $row['amount'] . "</td>";
$pre_size = $row['size'];
}
else
{
echo "<td>Not Changed ... </td><td>". $row['size'] . "</td><td>" . $row['amount'] . "</td>";
}
echo "</tr>";
}
?>
</body>
</html>
Thanks all for the proposed solutions. Berriel's MCVE works like a charm! However Stack doesn't let me +1 the answer yet.
I have one additional question:
I also have a second table in which the output of the first column can be any article code consisting of 10 chars limited to [a-z][0-9]. Since there is no predefined scheme such as in the Size table, I can't hardcode/predict any output like in most of the proposed solutions. However I still want to color the rows it in the same way described in my opening post.
I am not familiar with Stored Procedures or PDO in mysql. Is there any way to work around arrays with predefined content and still achieve the color grouping of rows with the same article code?
You can accomplish this using a nested repeat region.
First select your product by group WHERE product = 'product123' GROUP BY size
<?php
require ('conn.php');
try {
$prod = 'product123';
$sql = "SELECT * FROM sizes WHERE product=:prod GROUP BY size";
$query = $conn->prepare($sql);
$query->bindValue(':prod', $prod, PDO::PARAM_INT);
$query->execute();
$row = $query->fetch(PDO::FETCH_ASSOC);
$totalRows = $query->rowCount();
} catch (PDOException $e) {
die('failed!');
}
?>
Then get all the products in each group ordered by amount inside a nested repeat region.
Each "grouped row" will alternate colors.
<table width="200" border="0" cellspacing="0" cellpadding="5">
<tr>
<td>Size</td>
<td>Amount</td>
</tr>
<?php
$i = 0;
do {
$i = $i + 1;
if ($i % 2 == 0){
echo '<tr bgcolor=#E4E4E4><td colspan="2">';
} else {
echo '<tr bgcolor=#EEEEEE><td colspan="2">';
}
try {
$group = $row['size'];
$sql = "SELECT * FROM sizes WHERE size=:group ORDER BY amount ASC";
$nested = $conn->prepare($sql);
$nested->bindValue(':group', $group, PDO::PARAM_INT);
$nested->execute();
$row_nested = $nested->fetch(PDO::FETCH_ASSOC);
$totalRows_nested = $nested->rowCount();
} catch (PDOException $e) {
die('nested failed');
}
echo '<table border="0" cellpadding="0" cellspacing="0" width="200">';
do {
echo '<tr><td width="100">'.$row_nested['size'].'</td><td width="100">'.$row_nested['amount'].'</td></tr>';
} while ($row_nested = $nested->fetch(PDO::FETCH_ASSOC));
echo '</table>';
echo '</td></tr>';
} while ($row = $query->fetch(PDO::FETCH_ASSOC));
?>
</table>
I have a table in mysql.
Because it has many rows I want to put each 10 rows in a page and by clicking a link show me next 10 rows.
Is there any solution?
It was really really awesome http://www.phpsimplicity.com/tips.php?id=1
it is so simple! no need to work with huge classes! I'm Happy:D
<!DOCTYPE html>
<html lang="en">
<head>
<title>Paginate</title>
</head>
<body>
<form method='get'>
<?php
$connection = Mysql_connect( 'server', 'user', 'pass' );
if ( ! $connection ) {
echo 'connection is invalid';
} else {
Mysql_select_db( 'DB', $connection );
}
//Check if the starting row variable was passed in the URL or not
if ( ! isset( $_GET['startrow'] ) or ! is_numeric( $_GET['startrow'] ) ) {
//We give the value of the starting row to 0 because nothing was found in URL
$startrow = 0;
//Otherwise we take the value from the URL
} else {
$startrow = (int) $_GET['startrow'];
}
//This part goes after the checking of the $_GET var
$fetch = mysql_query( "SELECT * FROM sample LIMIT $startrow, 10" ) or
die( mysql_error() );
$num = Mysql_num_rows( $fetch );
if ( $num > 0 ) {
echo '
<table border=2>';
echo '
<tr>
<td>ID</td>
<td>Drug</td>
<td>quantity</td>
</tr>
';
for ( $i = 0; $i < $num; $i ++ ) {
$row = mysql_fetch_row( $fetch );
echo '
<tr>';
echo "
<td>$row[0]</td>
";
echo "
<td>$row[1]</td>
";
echo "
<td>$row[2]</td>
";
echo '
</tr>
';
}//for
echo '
</table>
';
}
//Now this is the link..
echo 'Next';
$prev = $startrow - 10;
//only print a "Previous" link if a "Next" was clicked
if ( $prev >= 0 ) {
echo 'Previous';
}
?>
</form>
</body>
</html>
By the way link of rickyduck was good too
I suggest checking out this link : http://php.about.com/od/phpwithmysql/ss/php_pagination.htm for basic pagination. Furthermore, if you have knowledge of javascript, you could use jQuery.