[wawa]

Hi.. is anyone can help me to solve this prob..

The Question: To compare between 3 variables which is x=50, y=350 and z=250 and find the largest value and the smallest value between this 3 variables.

My answer:
<?php

$x = 50;
$y = 350;
$z = 250;

echo "x value is $x<br>";
echo "y value is $y<br>";
echo "z value is $z<br>";

if ($x > $y || $x >$z)
{
echo "Value x is $x";
echo "Value x is large than value y and z";
}

else if ($x < $y || $x < $z)
{
echo "Value x is $x";
echo "Value x is small than value y and z";
}

else if ($y > $x || $y >$z)
{
echo "Value y is $y";
echo "Value y is large than value x and z";
}
else if ($y < $x || $y < $z)
{
echo "Value y is $x";
echo "Value y is small than value x and z";
}
else if ($z > $x || $z < $y)
{
echo "Value z is $z";
echo "Value z is small than value x and y";
}
else if ($z < $x || $z < $y)
{
echo "Value z is $z";
echo "Value z is small than value x and y";
}

?>

i want to find a small and large number from this 3 number, but the output from this coding only the small number appear.... i want large and small number appear..is there anyone can help me or correct my prob and show whre wrong..?

[kummu4help]

try this

<?php
	$x=30;
	$y=40;
	$z=60;
	
	$maxValue=max($x,max($y,$z));
	$minValue=min($x,min($y,$z));
	
	print $maxValue;
	print $minvalue;
?>

[wawa]

kummu4help, on 22 Dec, 2008 - 02:35 AM, said:

try this

<?php
	$x=30;
	$y=40;
	$z=60;
	
	$maxValue=max($x,max($y,$z));
	$minValue=min($x,min($y,$z));
	
	print $maxValue;
	print $minvalue;
?>

Thanks kummu4help for ur help but in need to solve this prob using if..if else..else control structure..any idea?

[CTphpnwb]

If($x>$y){
$max=$x;
$min=$y;
} else
{
$max=$y;
$min=$x;
}
if($max<$z){
$max=$z;
}
if{$min>$z){
$min=$z;
}

[~NJ]

You might be better off placing the values in an array and using some array specific functions to calculate the highest and lowest values. IE: sort();

I really don't know why you need it done using if..else statements. For one, it doesn't make your code very readable and you're typing a whole lot more than you need to. Not to mention the server performance...

[wawa]

~NJ, on 22 Dec, 2008 - 04:29 PM, said:

You might be better off placing the values in an array and using some array specific functions to calculate the highest and lowest values. IE: sort();

I really don't know why you need it done using if..else statements. For one, it doesn't make your code very readable and you're typing a whole lot more than you need to. Not to mention the server performance...

owh...i will try by using sort n thanks for helping..

[CTphpnwb]

I'm guessing that it's for a class.

[~NJ]

It's quite simple. All you'd need to do is something like:

$numbers = array('50', '350', '250');

Then simply sort them. The following function sorts them from lowest to highest:

sort($numbers);

Or (in your case) the following function should be used to sort the values from highest to lowest:

rsort($numbers);

Then you could simply echo out the highest, middle and lowest values:

echo "Highest value is: ";
echo $numbers[0];
echo "The middle number is: ";
echo $numbers[1];
echo "The lowest value is: ";
echo $numbers[2];

[wawa]

~NJ, on 22 Dec, 2008 - 04:48 PM, said:

It's quite simple. All you'd need to do is something like:

$numbers = array('50', '350', '250');

Then simply sort them. The following function sorts them from lowest to highest:

sort($numbers);

Or (in your case) the following function should be used to sort the values from highest to lowest:

rsort($numbers);

Then you could simply echo out the highest, middle and lowest values:

echo "Highest value is: ";
echo $numbers[0];
echo "The middle number is: ";
echo $numbers[1];
echo "The lowest value is: ";
echo $numbers[2];

i got it..thank a lot..

Attached File(s)

•  A2S1.php (435bytes)
  Number of downloads: 36
•  A2S1.php (435bytes)
  Number of downloads: 37

[wawa]

wawa, on 22 Dec, 2008 - 05:49 PM, said:

~NJ, on 22 Dec, 2008 - 04:48 PM, said:

It's quite simple. All you'd need to do is something like:

$numbers = array('50', '350', '250');

Then simply sort them. The following function sorts them from lowest to highest:

sort($numbers);

Or (in your case) the following function should be used to sort the values from highest to lowest:

rsort($numbers);

Then you could simply echo out the highest, middle and lowest values:

echo "Highest value is: ";
echo $numbers[0];
echo "The middle number is: ";
echo $numbers[1];
echo "The lowest value is: ";
echo $numbers[2];

i got it..thank a lot..

<?php

echo "Before Sorting <br>";
$numbers = array(50, 350, 250);
echo $numbers[0]. "<br>" ;
echo $numbers[1]. "<br>" ;
echo $numbers[2]. "<br>" ;

echo "After Sorting <br>";
$numbers = array(50, 350, 250);
rsort($numbers);
for ($i=0; $i <= 2; $i++)
echo $numbers[$i]."<br \>";

echo "Highest value is: <br>";
echo $numbers[0]. "<br>" ;
echo "The lowest value is: <br>";
echo $numbers[2]

?>

[~NJ]

No problem. I'm glad I could help you out