CODEWITHSUNDEEP
php
Gordon
Gordon

Reputation: 1914

Find greatest of three values in PHP

With three numbers, $x, $y, and $z, I use the following code to find the greatest and place it in $c. Is there a more efficient way to do this?

$a = $x;
$b = $y;
$c = $z;
if ($x > $z && $y <= $x) {
    $c = $x;
    $a = $z;
} elseif ($y > $z) {
    $c = $y;
    $b = $z;
}

Upvotes: 17

Views: 47928

Answers (4)

TAHER El Mehdi
TAHER El Mehdi

Reputation: 9203

If you want to Compare Three Variables. Compare two integers and get maximum of them by using max() function. Then compare the maximum with the third variable!

$x = 1; $y = 2; $z = 3;
$maximum = max($x, $y);
$c = max($maximum, $z);
echo $c; //3

Also you could do it just in one line max(max($x, $y), $z).

Upvotes: -1

Ashutosh Verma
Ashutosh Verma

Reputation: 11

<?php
$a=20;
$b=10;
$c=1;
if($a>$b && $a>$c)
{
echo "Greater value is a=".$a;
}
else if($b>$a && $b>$c)
{
echo "Greater value is b=".$b;
}
else if($c>$a && $c>$b)
{
echo "Greater value is c=".$c;
}
else
{
echo"Dont Enter Equal Values";
}
?>

Output:

Greater value is a=20

Upvotes: 0

Greg Hewgill
Greg Hewgill

Reputation: 994231

Probably the easiest way is $c = max($x, $y, $z). See the documentation on maxDocs for more information, it compares by the integer value of each parameter but will return the original parameter value.

Upvotes: 30

Tyler Carter
Tyler Carter

Reputation: 61577

You can also use an array with max.

max(array($a, $b, $c));

if you need to

Upvotes: 12

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