Q:

Number Triangle in Php

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robaa
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2022-11-13
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Number triangle in PHP can be printed using for and foreach loop. There are a lot of patterns in number triangle. Some of them are show here.

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robaa
2022-11-13
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Pattern1

<?php  
$k=1;  
for($i=0;$i<4;$i++){  
for($j=0;$j<=$i;$j++){  
echo $k." ";  
$k++;  
}  
echo "<br>";  
}  
?>

Output:

 

Pattern 2

<?php  
$k=1;  
for($i=0;$i<5;$i++){  
for($j=0;$j<=$i;$j++){  
if($j%2==0)  
{  
$k=0;  
}  
else   
{  
$k=1;  
}  
echo $k." ";  
}  
echo "<br>";  
}  
?>

Output:

 

Pattern 3

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

Output:

 

Pattern 4

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

Output:

 

Pattern 5

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

Output:

 

Pattern 6

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

Output:

 

Pattern 7

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

 

Output:

 

 

Pattern 8

<?php  
for($i=5;$i>=1;$i--){  
for($j=$i;$j>=1;$j--){  
echo $i." ";  
}  
echo "<br>";  
}  
?>

 

Output:

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