Php how to put result from function

Question

<?php
function szczesliwy ($od, $do, $ile) {
    $zasieg = range($od, $do);
    $losowe = array_rand($zasieg, $ile);
    $wynik = array();
    foreach ($losowe as $index) {
        $wynik []= $zasieg[$index];
    }   
    return $wynik;
}

szczesliwy(1, 31, 20);
print($wynik);
?>

It says Notice:

Undefined variable: wynik in C:\xampp\htdocs\21\index.php on line 14

and nothing else happens, and my question is how to put result on screen?

instead of szczesliwy(1, 31, 20); print($wynik); write $wynik = szczesliwy(1, 31, 20); print($wynik); , you misunderstood variable scope — Death-is-the-real-truth
– Death-is-the-real-truth, Commented Nov 14, 2016 at 9:40

nospor · Accepted Answer · 2016-11-14 09:39:27Z

1

You need to get what function returns

$wynik = szczesliwy(1, 31, 20);
print($wynik);

answered Nov 14, 2016 at 9:39

nospor

4,2301 gold badge18 silver badges26 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Mayank Pandeyz · Accepted Answer · 2016-11-14 09:40:25Z

0

Check the following line:

szczesliwy(1, 31, 20);
print($wynik);

where $wynik is defined??

Try this:

$wynik = szczesliwy(1, 31, 20);
// hold the return value of function
print($wynik);

answered Nov 14, 2016 at 9:40

Mayank Pandeyz

26.3k4 gold badges43 silver badges61 bronze badges

Comments

Arun · Accepted Answer · 2016-11-14 09:41:31Z

0

    <?php
function szczesliwy ($od, $do, $ile) {
$zasieg = range($od, $do);
$losowe = array_rand($zasieg, $ile);
$wynik = array();
foreach ($losowe as $index) {
    $wynik []= $zasieg[$index];
}   
return $wynik;


}
$wynik = szczesliwy(1, 31, 20);
print_r($wynik);
?>

answered Nov 14, 2016 at 9:41

Arun

1,7091 gold badge16 silver badges18 bronze badges

4 Comments

Schiazerro Over a year ago

Thanks! That helped a lot.

Rizier123 Over a year ago

While this code snippet may solve the question, including an explanation really helps to improve the quality of your post. Remember that you are answering the question for readers in the future, and those people might not know the reasons for your code suggestion. Please also try not to crowd your code with explanatory comments, this reduces the readability of both the code and the explanations!

Masivuye Cokile Over a year ago

Don't just code educate as well,you must explain your code for future readers as @Rizier123 have stated above.

Arun Over a year ago

print Outputs only a single string Returns 1, so it can be used in an expression e.g. print "Hello" or, if ($expr && print "foo") print_r() Outputs a human-readable representation of any one value Accepts not just strings but other types including arrays and objects, formatting them to be readable Useful when debugging May return its output as a return value (instead of echoing) if the second optional argument is given

Collectives™ on Stack Overflow

Php how to put result from function

3 Answers 3

Comments

Comments

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related