core php programming examples

Core php Programming Examples 

core php programming examples to swap two numbers 

<?php
$a=20;
$b=10;
echo  "a="." ".$a."  "."b="."  ".$b;
$temp=$a;
$a=$b;
$b=$temp;
echo "<br>";
 echo "after swapping A is"."  ".$a." "."and b is"."  ".$b ;
?>

core php programming examples to Fahrenheit temperature into Celsius 

<?php
$f=55 ;
$c=($f-32)*5/9;
echo $c;
?>

Program to print even numbers between 1 and 20 in php

<?php
for($i=1;$i<=20;$i++)
{
if($i%2!=0)
{
echo $i."  ";
}
}

Program in php to print first 10 natural numbers

<?php
for($i=1;$i<11;$i++)
{
echo $i ."  ";
}
?>

Program in php to generate pyramid

<?php
$i=1;
for($i=1; $i<=3; $i++)
{
for($j=1; $j<=$i; $j++)
{
echo '*';
}
echo '<br/>';
}
?>