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Three numbers x, y and z are given and the smallest number among these three numbers can be found out using below methods.

Example: Using If statement

In the below example, only if conditional statements are used.

<?php

  function smallest($x, $y, $z) {
    $min = $x;
    if ($x <= $y && $x <= $z)
      {$min = $x;}
    if ($y <= $x && $y <= $z)
      {$min = $y;}
    if ($z <= $x && $z <= $y)
      {$min = $z;}
    echo "Smallest number among $x, $y and $z is: $min\n";
  }

  smallest(100, 50, 25);
  smallest(50, 50, 25);

?>

The above code will give the following output:

Smallest number among 100, 50 and 25 is: 25
Smallest number among 50, 50 and 25 is: 25

Example: Using If-else statement

It can also be solved using If-else conditional statements.

<?php

  function smallest($x, $y, $z) {
    $min = $x;
    if ($x <= $y && $x <= $z)
      {$min = $x;}
    elseif ($y <= $x && $y <= $z)
      {$min = $y;}
    else 
      {$min = $z;}
    echo "Smallest number among $x, $y and $z is: $min\n";
  }

  smallest(100, 50, 25);
  smallest(50, 50, 25);

?>

The above code will give the following output:

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using Nested If-else statement

The above problem can also be solved using nested if-else conditional statements.

<?php

  function smallest($x, $y, $z) {
    $min = $x;
    if ($x <= $y)
      {
        if($x <= $z) 
          {$min = $x;}
        else
          {$min = $z;}
      }
    else
      {
        if($y <= $z) 
          {$min = $y;}
        else
          {$min = $z;}
      }
    echo "Smallest number among $x, $y and $z is: $min\n";
  }

  smallest(100, 50, 25);
  smallest(50, 50, 25);

?>

The above code will give the following output:

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using ternary operator

The ternary operator can also be used here.

<?php

  function smallest($x, $y, $z) {
    $min = $x;
    $min = ($x < $y)? (($x < $z)? $x : $z) : (($y < $z)? $y : $z);
    echo "Smallest number among $x, $y and $z is: $min\n";
  }

  smallest(100, 50, 25);
  smallest(50, 50, 25);

?>

The above code will give the following output:

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25



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