Function doesn't output "STRING"

Question

<?php
function remove_char(string $s):string
    {
        settype($s, 'string');
        $pieces = str_split($s);
        unset($pieces[0]);
        $numb = count($pieces);
        unset($pieces[$numb - 1]);
        echo implode("", $pieces);
    }

    $lotsp = "lotsp";`enter code here`
    remove_char($lotsp);
?>

The function 'remove_char()' supposed to bring 'String' type of output. However it is outputting anything other than string.

Error: FATAL ERROR Uncaught TypeError: Return value of remove_char() must be of the type string, none returned in /home4/phptest/public_html/code.php70(5) : enter code here

I don't know where is the problem. Any help is greatly appreciated. Thanks

`string` isn't a very useful tag - what language are you using? Perl? PHP? — hnefatl, Nov 15 '17 at 14:03

Camilo · Answer 1 · 2017-11-15T16:01:55.807

1

You are declaring that remove_char() should return a string but you are not returning anything.

Remove :string from your function declaration:

function remove_char(string $s)
{
    settype($s, 'string');
    $pieces = str_split($s);
    unset($pieces[0]);
    $numb = count($pieces);
    unset($pieces[$numb - 1]);
    echo implode("", $pieces);
}

Now you should be able to echo from within the function.

See this answer about the difference between echo and return.

edited Nov 15 '17 at 16:01

answered Nov 15 '17 at 14:36

Camilo

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You should explain the difference between a return value and output. – Narf Nov 15 '17 at 14:36
@Narf Added some explanation and a link to a related answer. – Camilo Nov 15 '17 at 14:42
@Camilio I need to show something on screen, so how can 'Return' statement fix this up – bob_cat Nov 15 '17 at 14:45
`echo remove_char($lotsp);` – Camilo Nov 15 '17 at 14:49
@Camilo I just echoed outside of the function statement..yes..it works...but I need to do this inside the function statement.... – bob_cat Nov 15 '17 at 14:52
Remove `:string` from your function declaration. – Camilo Nov 15 '17 at 14:54
Please, consider accepting the answer if it solved your problem. – Camilo Nov 15 '17 at 15:18

Function doesn't output "STRING"

1 Answers1