Alphabet Triangle Method

Alphabet Triangle Method

There are three methods to print the alphabets in a triangle or in a pyramid form.

• range() with for loop
• chr() with for loop
• range() with foreach loop

Logic:

• Two for loops are used.
• First for loop set conditions to print 1 to 5 rows.
• Second for loop set conditions in decreasing order.

Using range() function

This range function stores values in an array from A to Z. here, we use two for loops.

Example:

<?php  
$alpha = range('A', 'Z');  
for($i=0; $i<5; $i++){   
  for($j=5; $j>$i; $j--){  
    echo $alpha[$i];  
    }  
    echo "<br>";  
}  
?>  

?php  
for( $i=65; $i<=69; $i++){   
   for($j=5; $j>=$i-64; $j--){  
    echo chr($i);  
    }  
    echo "<br>";  
}  
?>  

<?php  
$k=1;  
foreach(range('A','Z') as $char){  
    for($i=5; $i>=$k; $i--){  
            echo $char;  
        }  
        echo "<br>";  
        $k=$k+1;