# PHP program to print Triangle number in reverse pattern

## 1. Program to print Triangle number in reverse pattern

<?php
for(\$i=6;\$i>=1;\$i--)
{
for(\$j=\$i;\$j>=1;\$j--)
{
echo \$j." ";
if(\$j==1)
{
echo " ";
echo "<br />";
}
}
}
?>

6 5 4 3 2 1
5 4 3 2 1
4 3 2 1
3 2 1
2 1
1

## 2. Program to print Triangle number in reverse pattern

<?php
for(\$i=1;\$i<=6;\$i++)
{
for(\$j=\$i;\$j>=1;\$j--)
{ echo \$j." ";
if(\$j==1)
{
echo " ";
echo "<br />";
}
}
}
?>

### Output:

1
2 1
3 2 1
4 3 2 1
5 4 3 2 1
6 5 4 3 2 1
1. Tanvi Parekh says

33333
6666
999
1212
15

give this pattern.

1. Full Stack developer says

Hello Tanvi Parekh,

Please try this code:

<?php
\$num = 3;
for (\$i = 1; \$i <= 6; \$i++) {
for (\$j = 6 - \$i; \$j >= 1; \$j--) {
echo \$i * \$num . " ";
}
echo "<br>";
}
?>

2. vishal says

Hello sir,
1 2 3 4
8 7 6 5
9 10 11 12
16 15 14 13

give me this pattern ans.

1. Full Stack developer says

Hello Vishal,

Try this code –

\$k = 1;
for (\$i = 1; \$i <= 4; \$i++) {
if (\$i % 2 == 0) { // check here row start with even number
\$h = 4 * \$i;
for (\$j = 1; \$j <= 4; \$j++) {
echo \$h.' ';
\$h--;
\$k++;
}
echo "<br>";
} else {
for (\$j = 1; \$j <= 4; \$j++) {
echo \$k.' ';
\$k++;
}
echo "<br>";
}
}

3. siva says

hello sir
6,1,1,1,1,1
2,4,2,2,2,2
1,1,6,1,1,1
2,2,2,4,2,2
1,1,1,1,6,1
2,2,2,2,2,4
give me this pattern ans.

1. siva says
<?php
for (\$i = 1; \$i<= 6; \$i++) {
for (\$j = 1; \$j<= 6; \$j++) {
if(\$i%2 == 0){
if(\$i == \$j){
echo "4";
} else {
echo "2";
}
} else {
if(\$i == \$j){
echo "6";
} else {
echo "1";
}

}
}
echo "<br>";
}
?>

1. Vikas Kumar says

Dear Siva,
Thank you so much for the useful solution.

4. murshid says

1
2 6
3 7 10
4 8 11 13
5 9 12 14

1. murshid says

1. Vikas Kumar says

Try this code –

<?php
\$n = 5;
for (\$i = 1; \$i <= \$n; \$i++) {
\$diff  = \$n - 1;
\$value = \$i;
for (\$j = 1; \$j <= \$i; \$j++) {
echo \$value . " ";
\$value = \$value + \$diff;
\$diff--;
}
echo "<br />";
}
?>

5. Saranya E R says

A
C D
G H I
M N O P
U V W X Y

can you explain the PHP code for this pattern and hw it works?

1. Vikas Kumar says

Try this code –

<?php
\$num = 65;
for (\$i = 0; \$i < 5; \$i++) {
\$k = 1;
for (\$j = 0; \$j <= \$i; \$j++) {

if (\$k == 1) {
\$num = \$num + \$i;
}
\$ch = chr(\$num);
echo \$ch . " ";
\$num = \$num + 1;
\$k++;
}
echo "<br />";
}
?>

6. Saranya ER says

Thanku so much…😊

1. Vikas Kumar says

You’re welcome. Happing Coding.