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Print Star pyramid pattern program in PHP

In these tutorials, you will learn to print the star pattern program in PHP, patterns like a half pyramid, full pyramid, etc.

Example 1: Half Pyramid of *


<?php

function star_pattern($row){
  for ($i = 1; $i <= $row; $i++)
  {
      for ($j = 1; $j <= $i; $j++)
      {
          echo " * ";
      }
      echo "\n";
  }
}
$row=5;
star_pattern($row);
?>

output

 * 
 *  * 
 *  *  * 
 *  *  *  * 
 *  *  *  *  *

Example 2: Inverted half pyramid of *


<?php
function star_pattern($row){
  for ($i = $row; $i >= 1; $i--)
  {
      for ($j = 1; $j <= $i; $j++)
      {
          echo " * ";
      }
      echo "\n";
  }
}
$row=6;
star_pattern($row);
?>

output

 *  *  *  *  *  * 
 *  *  *  *  * 
 *  *  *  * 
 *  *  * 
 *  * 
 *

Example 3: Full Pyramid of * (star)


<?php

function star_pattern($row){
 $k = 0;
 for ($i = 1; $i <= $row; $i++, $k = 0)
 {
      for ($space = 1; $space <= $row - $i; $space++)
      {
         echo "  ";
      }
      while ($k != 2 * $i - 1) {
        echo("* ");
         $k++;
      }
      echo "\n";
 }
}
$row=6;
star_pattern($row);
?>

output

          * 
        * * * 
      * * * * * 
    * * * * * * * 
  * * * * * * * * * 
* * * * * * * * * * *

Example 4: Inverted Full Pyramid of * (star)


<?php
function star_pattern($row){
 $k = 0;
 for ($i = $row; $i >= 1; $i--, $k = 0)
 {
      for ($space = 0; $space < $row - $i; $space++)
      {
         echo "  ";
      }
      for ($j = $i; $j <= 2 * $i - 1; $j++)
      {
        echo " * ";
      }
      for ($j = 0; $j < $i - 1; $j++)
      {
        echo " * ";
      }
      echo "\n";
 }
}
$row=6;
star_pattern($row);
?>

output

 *  *  *  *  *  *  *  *  *  *  * 
   *  *  *  *  *  *  *  *  * 
     *  *  *  *  *  *  * 
       *  *  *  *  * 
         *  *  * 
           *

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