How can I find the maximum value

Question

<?php
$all = array();
enter code here
for($i = 1 ; $i <= 100 ; $i++){
$ric=sqrt($i);
if(is_int($ric) == true){
    $all[] = $i;
    
}
}
$max = max($all);
$min = min($all);
echo "MIN=".$min."<br>";
echo "MAX=".$max;

Hello I changed my codes and instead of if((int)$ric - $ric == 0) I write this if(is_int($ric) == true) but it gets me wrong.What is the problem? please help me out.

assuming `max()` is the PHP inbuilt `max()` it is used to find the largest value in an array. You dont have and have not created an array — RiggsFolly, Aug 05 '20 at 15:52
Add [error reporting](http://stackoverflow.com/questions/845021/) to the top of your file(s) _while testing_ right after your opening PHP tag for example. Even if you are developing on a server configured as LIVE you will now see any errors. ` — RiggsFolly, Aug 05 '20 at 16:14

Barmar · Accepted Answer · 2020-08-05T21:20:06.260

5

Put all the $i that satisfy the condition into an array. You can then use the min() and max() functions to get the minimum and maximum values.

<?php
$all_i = [];
for($i = 1 ; $i <= 100 ; $i++){
    $ric=sqrt($i);
    if((int)$ric - $ric == 0){
        $all_i[] = $i;
    }
}
$max_i = max($all_i);
$min_i = min($all_i);
echo "Min = $min_i<br>Max = $max_i<br>";
echo "All = " . implode(", ", $all_i) . "<br>";
?>

edited Aug 05 '20 at 21:20

answered Aug 05 '20 at 15:54

Barmar

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Thanks man your answer was very useful for me but could you please help me out to find the minimum of $i and please tell me that can we create an array with $i? – ALIMOW Aug 05 '20 at 16:32
I've updated the answer. – Barmar Aug 05 '20 at 16:42
Quote mismatch `echo 'Min ` ... `
";`. – Markus AO Aug 05 '20 at 21:10
Barmar could you please help me? – ALIMOW Aug 06 '20 at 12:50
Everything you wanted is in the answer. What don't you understand? – Barmar Aug 06 '20 at 14:22

How can I find the maximum value

1 Answers1