Swap Two number Program in PHP

Swap Two number Program in PHP

Swap two number with each other means interchange their value. Suppose you have two number a and b a contain 6 and b contain value 5 after swap their value, a have 5 and b have 6.

basically 2 method of interchange value
a-using third variable,
b-without using third variable(Using Arithmetic Operators),
c-usign multiplication,
d-bitwaise XOR operation,


a-swap two number using third

<?php

$a=10;
$b=20;

echo "Value of a: $a</br>";
echo "Value of b: $b</br>";

$a=$a+$b;
$b=$a-$b;
$a=$a-$b;

echo "Value of a: $a</br>";
echo "Value of b: $b</br>";

?>


b-without using third variable(Using Arithmetic Operators),

wap two number with each other means interchange their value. Suppose you have two number a and b a contain 10 and b contain value 20 after swap their value, a have 20 and b have 10.

<?php

$a=10;
$b=20;

echo "Value of a: $a</br>";
echo "Value of b: $b</br>";

$temp=$a;
$a=$b;
$b=$temp;

echo "Value of a: $a</br>";
echo "Value of b: $b</br>";

?>


c-usign multiplication,

Multiplication and division can also be used for swapping.

<?php

  $x = 10, $y = 5;
  // Code to swap 'x' and 'y'
  $x = $x * $y;  // x now becomes 50
  $y = $x / $y;  // y becomes 10
  $x = $x / $y;  // x becomes 5

  printf("After Swapping: $x, $y", $x, $y);

?>

d-bitwaise XOR operation,


The bitwise XOR operator can be used to swap two variables. The XOR of two numbers x and y returns a number which has all the bits as 1 wherever bits of x and y differ.

<?php

  int $x = 10, $y = 5;

  // Code to swap 'x' (1010) and 'y' (0101)
  $x = $x ^ $y;  // x now becomes 15 (1111)
  $y = $x ^ $y;  // y becomes 10 (1010)
  $x = $x ^ $y;  // x becomes 5 (0101)

  print_r("After Swapping: $x, $y ", $x, $y);

?>


list() :

list — Assign variables as if they were an array

<?php

$info = array('coffee', 'brown', 'caffeine');

// Listing all the variables
list($drink, $color, $power) = $info;


?>