programming-examples/php/Basics/Pattern Problems in PHP.php

/* Pattern problems in PHP */
/* 1 */

<?php

for ($row = 1; $row <= 5; $row++)
{
 echo "* </br>";
}

?>
/*
Output
	
*
*
*
*
*
*/
/* Print Triangle of Stars in PHP */

<?php

for ($row = 1; $row <= 5; $row++)
{
 for ($col = 1; $col <= 5; $col++)
  {
   echo '* ';
  }
   echo "</br>";
}

?>

/*
Output
	
* * * * *
* * * * *
* * * * *
* * * * *
* * * * *
*/

/*Print Star Pattern in PHP */

<?php

for($i=0;$i<=5;$i++)
{
for($j=1;$j<=$i;$j++)
{
echo "* ";
}
echo "<br>";
}

?>

/*

Output
	
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
*/
/* Print Star Pattern in PHP */
<?php

for($i=0;$i<=5;$i++)
{
for($j=5-$i;$j>=1;$j--)
{
echo "* ";
}
echo "<br>";
}

?>

/*
Output
	
* * * * * * *
* * * * * *
* * * * *
* * * *
* * *
* *
*
*/

/* Print Triangle of Stars in PHP */

<?php

for($a=5; $a>=1; $a--)
{
if($a%2 != 0)
{
for($b=5; $b>=$a; $b--)
{
echo "* ";
}
echo "<br>";
}
}
for($a=2; $a<=5; $a++)
{
 if($a%2 != 0)
{
 for($b=5; $b>=$a; $b--)
{
echo "* ";
}
echo "<br>";
}
}

?>

/*
Output
	
*
* * *
* * * * *
* * *
* 
*/
/*
Print Star Pattern in PHP*/

<?php
for ($row = 1; $row <= 5; $row++)
{
    for ($col = 1; $col <= ($row > 3 ? 6 - $row : $row); $col++)
    {
        echo '* ';
    }

     echo "</br>";
}

?>
/*
Output
	
*
* *
* * *
* *
*
*/

/* Print Triangle of Stars in PHP*/

<?php

for($i=0;$i<=6;$i++)
{
for($k=6;$k>=$i;$k--)
{
echo "  ";
}
for($j=1;$j<=$i;$j++)
{
echo "*  ";
}
echo "<br>";
}
for($i=5;$i>=1;$i--)
{
for($k=6;$k>=$i;$k--)
{
echo "  ";
}
for($j=1;$j<=$i;$j++)
{
echo "*  ";
}
echo "<br>";
}

?>
/*
Output
	
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
* * * * * *
* * * * *
* * * *
* * *
* *
*
*/

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

<?php
 if(isset($_POST['sub']))
 {
   $rows=$_POST['row'];
   for($i=$rows;$i>=1;--$i)
     {
         for($space=0;$space<$rows-$i;++$space)
            echo "  ";
         for($j=$i;$j<=2*$i-1;++$j)
           echo "* ";
         for($j=0;$j<$i-1;++$j)
             echo "* ";
         echo "<br />";
     }
 }
 ?>

Program to print below format.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7
1 2 3 4 5 6
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
Hide Answer
<?php
 if(isset($_POST['sub']))
 {
   $rows=$_POST['row'];
   for($i=$rows;$i>=1;--$i)
     {
         for($j=1;$j<=$i;++$j)
         {
            echo $j;
         }
     echo "<br />";
     }
 }
 ?>

 Program to print below format
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
* * * * * * * *
* * * * * * * * *
Hide Answer
<?php
 if(isset($_POST['sub']))
 {
   $rows=$_POST['row'];
      for($i=1;$i<=$rows;$i++)
        {
 
           for($j=1;$j<=$i;$j++)
              {
                echo "*";
              }
            echo "<br />";
        }
 }
 ?>

 /* Write a program to print below format
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
*/
<?php
if(isset($_POST['sub']))
 {
   $row=$_POST['row'];
      for($i=1;$i<=$row;$i++)
        {
 
           for($j=1;$j<=$i;$j++)
              {
                echo $j;
              }
            echo "<br />";
        }
 }

/*
 Write a program to print the below format : 
1 5 9
2 6 10
3 7 11
4 8 12
*/
<?php
 
for($i=1;$i<=4;$i++)
{
 $i1=$i+4;
 $i2=$i+8;
echo $i." ".$i1." ".$i2;
echo "<br />";
}


?>


Write a program for this Pattern:
*****
*      *
*      *
*      *
*****
Hide Answer
<?php
for($i = 1; $i<=5; $i++){
            for($j = 1; $j<=5; $j++){
               if($i == 1 || $i == 5){
                   echo "*";
               }
               else if($j == 1 || $j == 5){
                   echo "*";
               }
               else {
                   echo "&nbsp;&nbsp;";
               }
                
            }
            echo "<br/>";
    }
?>



How to write a Floyd's Triangle? 
1
23
456
78910
1112131415
Hide Answer
 <?php
$a = 1;
for($i = 1; $i<=5; $i++)
{
    for($j = 1; $j<=$i; $j++)
    {
        echo $a;
        $a++;
    }
    echo '<br/>';
}
?>

Write a program to make a chess: 

Hide Answer
 <table width="270px" cellspacing="0px" cellpadding="0px" border="1px">  
   <!-- cell 270px wide (8 columns x 60px) -->  
      <?php  
      for($row=1;$row<=8;$row++)  
      {  
          echo "<tr>";  
          for($col=1;$col<=8;$col++)  
          {  
          $total=$row+$col;  
          if($total%2==0)  
          {  
          echo "<td height=30px width=30px bgcolor=#FFFFFF></td>";  
          }  
          else  
          {  
          echo "<td height=30px width=30px bgcolor=#000000></td>";  
          }  
          }  
          echo "</tr>";  
    }  
          ?>  
  </table>