How can I create a pyramid from using php?

Question

I need to create a pyramid using asterisks. I specify a value which becomes the base of the pyramid. The base contains as much asterisks as the value specified and the pyram

Answer 1

From what I understand, what you are looking for is an Odd numbered pyramid, i.e. the number of * in each row is as per odd number series, like 1,3,5,7. If you wish to include "if-else" statements then you can go with the above answered loops, but if you only wish to use "for" loops, then you can use the following code:

<?php
$x=1;
  for($i=1;$i<7;$i++)
      {
      for($j=7;$j>$i;$j--)
          {
            echo '&nbsp;&nbsp;';
          }
      for($k=1;$k<=$x;$k++)
          {
            echo '*';
          }
          $x=$x+2;  
          echo "<br/>";
      }
?>

Answer 2

Just make it simpler:

function create_pyramid($limit) {
    for($row = 1; $row < $limit; $row ++) {
        $stars = str_repeat('*', ($row - 1) * 2 + 1);
        $space = str_repeat(' ', $limit - $row);
        echo $space . $stars . '<br/>';
    }
}
echo "<pre>" ;
create_pyramid(10);

Answer 3

<?php

ini_set('display_errors', 1);

/**
 * Here is my solution for printing the pyramid using a class 
 */

class pyramid 
{
    function __construct($rows)
    {

        for ($k=1; $k <= $rows ; $k++) { 
            $this->space($rows,$k);
            $this->left($k);
            $this->right($k);
            echo "<br>";
        }
    }


    public function left($k)
    {
        for ($i=1; $i < $k ; $i++) { 
            echo $i;
        }
    }
    public function right($i)
    {
        for ($j=$i; $j >= 1 ; $j--) { 
            echo $j;
        }
    }
    public function space($rows,$k)
    {
        for ($i=$rows-$k; $i > 0 ; $i--) { 
            echo "&nbsp;";
        }
    }
}

$pyramid =  new pyramid(5);

?>
<style type="text/css">
    body{
        font-family: monospace;
        font-size: 24px;
    }
</style>

Answer 4

<?php

$n=9;
for($i=0; $i<=$n; $i++)
{

for($j=1; $j<=$i; $j++)

                echo "&nbsp;";


    for($k=1; $k<=$n-$i; $k++)

        echo $k;


        for($j=($k-2); $j>0; $j--)

                  echo $j;





            for($k=1; $k<=$i; $k++)

                        echo "&nbsp;";






    echo "</br>";

}





?>

Answer 5

<?php 
$l=5;
for ($i=1; $i <=5; $i++) { 

    for ($k=1; $k < $l ; $k++) { 

        echo '&nbsp;';

    }

    for ($j=0; $j<$i; $j++) {



        echo '*';
    }

    $l--;

    echo "<br>";

}

?>

Answer 6

function create_row($num, $limit) {

    $append = '';

    if($limit > $num && ($limit - $i) % 2 == 0) {

        $append .= '-';

    }

    $stars = str_repeat('*', $num);

    $ap_len = floor(($limit - $num) / 2);

    $prepend = str_repeat('-', $ap_len);

    $append .= str_repeat('-', $ap_len);

    return $prepend . $stars . $append;

}

function create_pyramid($limit){

    if ($limit > 0){

        $no_last = false;

        for($i = 1; $i <= $limit; $i += 2) {

            print create_row($i, $limit) . PHP_EOL;

            if($i == $limit) {

                $no_last = true;

            }

        }

        if(!$no_last) {

            print create_row($limit, $limit) . PHP_EOL;

        }

    }

}

create_pyramid(10);