I'm a beginner at PHP and I have the following issue: I need to create a 5x5 table in PHP like this:
This is what I have so far:
echo '<table border="1" style="width:100px">';
for ($i=0; $i < 5; $i++) {
echo "<tr>";
for ($j=0; $j < 5; $j++) {
echo "<td>";
echo $j;
echo "</td>";
}
echo "</tr>";
}
echo "</table>";
Change echo $j; to:
echo ($i*5) + $j + 1;
Related
This question already has answers here:
PHP: How do you determine every Nth iteration of a loop?
(8 answers)
Closed last year.
I had a little problem, i cannot break the table because I'm looking for a 16 columns in these table to create a unicode table...
The aim is to find where i must break the line of the column as like as there:
<?php
$columnas = 16;
$filas = 16;
$word= 0;
$contador = 0;
print "<table border=\"1\">\n";
print "<caption>ASCII</caption>\n";
print "<tbody>\n";
print "<tr>\n";
for ($j = 1; $j <= $columnas; $j++){
if ($j%2 == 1){
print "<th>Codigo</th>\n";
}elseif ($j%2 == 0){
print "<th>Valor</th>\n";
}
}
print "</tr>";
for ($i = 1; $i <= $filas; $i++){
for($i = 1; $i <= 50000; $i++,$contador){
$unicodeChar = "&#{$i}";
$contador--;
print "<td>" .$i. "</td>\n";
print "<td>".$unicodeChar."</td> \n";
}
print "</tr>\n";
}
print "</tbody>\n";
print "</table>\n";
?>
enter image description here
You used the modulus in the first loop, so use it again in the second
print "</tr>";
print "<tr>";
for($i = 1; $i <= 50000; $i++){
$unicodeChar = "&#{$i}";
$contador--;
print "<td>$i</td><td>$unicodeChar</td>\n";
if ( $i % $columnas/2 ) == 0 ) {
print "</tr><tr>\n";
}
}
print "</tr>\n";
Thank you very much for this help, i have been fixed!!
here is the code that i fixed, with your idea :)
´´´´
<?php
$columnas = 16;
$filas = 16;
$word= 0;
$contador = 0;
print "<table border=\"1\">\n";
print "<caption>ASCII</caption>\n";
print "<tbody>\n";
print "<tr>\n";
for ($j = 1; $j <= $columnas; $j++){
if ($j%2 == 1){
print "<th>Codigo</th>\n";
}elseif ($j%2 == 0){
print "<th>Valor</th>\n";
}
}
print "</tr>";
for ($i = 1; $i <= $filas; $i++){
print "<tr>";
for($i = 1; $i <= 50000; $i++,$contador){
$unicodeChar = "&#{$i}";
$contador--;
print "<td>" .$i. "</td>\n";
print "<td>".$unicodeChar."</td> \n";
if (($i % 8 ) == 0 ){
print "</tr><tr>";
}
}
print "</tr>\n";
}
print "</tbody>\n";
print "</table>\n";
?>
´´´´
Like Riggsfolly said but maybe divide the columns number by 2 before the modulo, because there are 2 TDs / iteration:
if ( $i % ($columnas/2) ) == 0 ) {
print "</tr><tr>\n";
}
I made a script where it creates a pyramid using a php for loop and html table elements, but the pyramid isn't how I want it yet.
The code:
<?php
echo "<table width=400px";
echo "<tr>";
//Inner Loop
for ($x = 0; $x <= 8; $x++) {
//Outer loop
for ($z = 1; $z <= $x; $z++) {
echo "<td height=50px width=50px bgcolor=black></td>";
}
echo "\n";
echo "</tr>";
}
echo "</table>";
?>
Right now it looks like this:
But I want it to look like this:
Can someone help me with that?
Simply add cellspacing=0 to table
<?php
echo "<table cellspacing=0 width=400px";
echo "<tr>";
//Inner Loop
for ($x = 0; $x <= 8; $x++) {
//Outer loop
for ($z = 1; $z <= $x; $z++) {
echo "<td height=50px width=50px bgcolor=black></td>";
}
echo "\n";
echo "</tr>";
}
echo "</table>";
?>
Below is my code and it produces a table with 3 Columns and 6 Rows. I want the produced HTML syntax to stored the variable in PHP. Is there a way this is possible?
echo "<table border =\"1\" style='border-collapse: collapse'>";
for ($i=0; $i <= $col_count; $i++) {
echo "<tr>\n";
for ($j=0; $j <= $row_count; $j++) {
$p = $data2[$i][$j];
echo "<td>$p</td> \n";
}
echo "</tr>";
}
echo "</table>";
?>
Try below both way codes it's work proper..!
<?php
//one way
echo '<table border ="1" style="border-collapse: collapse">';
for ($i=0; $i <= $col_count; $i++)
{
echo '<tr>\n';
for ($j=0; $j <= $row_count; $j++)
{
$p = $data2[$i][$j];
echo '<td>'.$p.'</td> \n';
}
echo '/tr>';
}
echo '</table>';
//second way(all html tag and string store in one php variable and after echo in last)
$tbl = '<table border ="1" style="border-collapse: collapse">';
for ($i=0; $i <= $col_count; $i++)
{
$tbl .= '<tr>\n';
for ($j=0; $j <= $row_count; $j++)
{
$p = $data2[$i][$j];
$tbl .= '<td>'.$p.'</td> \n';
}
$tbl .= '/tr>';
}
$tbl .= '</table>';
echo $tbl;
?>
A quick and easy solution would be to use output buffering functions:
ob_start();
// echo your stuff here exactly as you are right now
$html = ob_get_clean();
Then you can echo $html (or <?= $html ?> if you're not in a PHP tag already) wherever / as many times as needed.
This should also be faster than using concatenation over and over again.
I want to iterate an array of data using foreach loop.
However, I want the first 4 results to display two items per row.Thereafter I want the rest of the data to display I item per row
i found a possible solution here
$data = range(1, 30);
for($count = 0; $count < count($data);)
{
echo "<tr>\n";
for($i = 0; $count < count($data) && $i < 2; $count++, $i++) {
echo "\t<td>$data[$count]</td>\n";
}
for(; $i < 2; $i++) {
echo "\t<td>-</td>\n";
}
echo "</tr>\n";
}
how the problem with this code is that it displays all the data in rows of two.i however only want the first 4 results to display that way.
You can do something like this:
$data = range(1, 30);
for($count = 0; $count < count($data); ++$count){
if($count < 4){
if($count % 2 == 0){
echo "<tr><td>" . $data[$count] . "</td>";
}else{
echo "<td>" . $data[$count] . "</td></tr>";
}
}else{
echo "<tr><td>" . $data[$count] . "</td></tr>";
}
}
Here's the demo
You're using the already incremented $i variable twice.
$i is never < 2
Add this instead
for($j = 0; $j < 2; $j++) {
echo "\t<td>-</td>\n";
}
Test here
Try with -
$data = range(1, 30);
for($count = 0; $count < count($data); $count++)
{
echo "<tr>";
if($count < 2) {
for($i = 1; $i <= 2; $i++) {
echo "<td>" . $data[$count] . "</td>";
if($i == 1) {
echo "</tr><tr>";
}
}
} else {
echo "<td>" . $data[$count] . "</td>";
}
echo "</tr>";
}
What about something like this?
echo '<table border=1>';
$data = range(1, 30);
for($count = 0; $count < count($data); $count++){
echo "<tr>\n";
if($count < 4) {
echo "\t<td>$data[$count]</td>\n";
$count++;
echo "\t<td>$data[$count]</td>\n";
} else {
echo "\t<td colspan=2>$data[$count]</td>\n";
}
echo "</tr>\n";
}
echo '</table>';
I am trying to create a simple multiplication grid in PHP
It should be of the format for example for a 2x2 grid:
0 1 2
1 1 2
2 2 4
My issue is getting it to start from 0.
This is my nested for loop so far:
for($i=0;$i<=$_POST['rows'];$i++)
{
echo "<tr>";
for($j=0;$j<=$_POST['columns'];$j++)
{
if($i==0)
{
echo "<td>" . 1*$j . "</td>";
}
else
{
$mult = $i * $j;
echo "<td> $mult </td>";
}
}
echo "</tr>";
}
But it gives the output:
0 1 2
0 1 2
0 2 4
I need the column of 0's to be appropriate.
The way you're getting the top row of 0 1 2 3 is by that special-case on the X-axis. Do a similar special-case for the Y-axis ($j):
if ($i == 0) {
... 1 * $j ...
}
else if ($j == 0) {
... $i * 1 ...
}
else {
... $i * $j ...
}
You not only have $i==0 as special case but also $j==0:
if($i==0)
{
echo "<td>" . 1*$j . "</td>";
}
elseif($j==0)
{
echo "<td>" . $i*1 . "</td>";
}
else
{
$mult = $i * $j;
echo "<td> $mult </td>";
}
I don't understand the way you construct your grid. All you need is a row indicator and the number for the multiplication not a nested loop. Second: Why don't you start with 1 instead of catching the case inside the loop. This would be my variant of the multiplication “grid”
<?php
$rows = $_POST['rows'];
$number = $_POST['columns'];
for( $i=1; $i <= $rows; $i++) {
$mult = $i * $number;
echo "<tr>
<td>" . $i.'*'. $j . "</td>
<td>".$mult."</td>
</tr>";
}
?>
This would to a simple grid (x * y) = result. If you want a complete multiplication table it would be something like this:
<?php
$rows = $_POST['rows'];
$number = $_POST['columns'];
echo "<tr><th></th>";
for( $j=1; $j <= $number; $j++) {
echo "<th>".$j."</th>";
}
echo "</tr>";
for( $i=1; $i <= $rows; $i++) {
echo "<tr>";
echo "<th>".$i."</th>";
for( $j=1; $j <= $number; $j++) {
$mult = $i * $j;
echo "<td>".$mult."</td>";
}
echo "</tr>";
}
?>