HT: Work with command in variable ?

[TryPHP]

$a1=array("Animals","Cars");
function echointextarea($what,$long,$deep){echo("<textarea cols=\"$long\" rows=\"$deep\" wrap=\"OFF\">$what</textarea>");}
$e=print_r($a1);
echointextarea($e,20,5);

Why does not it work ?
How to change it to work ?
Why is the PHP displayer so small ?

This should show array in text area. Shown array is out of text area 🙁

[laserlight]

For starters, you should format your code properly, e.g.,

function echointextarea($what, $long, $deep) {
    echo "<textarea cols=\"$long\" rows=\"$deep\" wrap=\"OFF\">$what</textarea>";
}

$a1 = array("Animals", "Cars");
$e = print_r($a1);
echointextarea($e, 20, 5);

Now, one problem is that print_r is just returning true. You should make it return the string representation instead, e.g.,

function echointextarea($what, $long, $deep) {
    printf('<textarea cols="&#37;d" rows="%d" wrap="OFF">%s</textarea>',
        $long, $deep, htmlspecialchars($what));
}

$a1 = array("Animals", "Cars");
$e = print_r($a1, true);
echointextarea($e, 20, 5);

Notice that I made use of printf and htmlspecialchars to escape the output.

[TryPHP]

I currently do not know what "%" or "%d" means, Id have to learn :-D
So can not understand how function works :-D

But I do not know what to seach to learn about "%" . . . :-D
🙂

[dagon]

the sprintf manual page explains the format that it shares with printf

[TryPHP]

I maybe now know hot it could work.

$a1=array("Animals","Cars");
function echointextarea($what,$long,$deep){
echo("<textarea cols=\"$long\" rows=\"$deep\" wrap=\"OFF\">$what</textarea>");
                                          }
echointextarea(print_r($a1),20,5);

When I try and it'll work, I will mark thread solved.

[laserlight]

You need to actually read the PHP manual on [man]print_r/man.

[TryPHP]

laserlight;10966513 wrote:

You need to actually read the PHP manual on [man]print_r/man.

In that case, there are two more options 🙂

echointextarea(print_r($a1,true),20,5);
or //option 2 (string "or" also belongs to comments.I wrote it out of the
   //comments, because it gets better color and forum will not warn me
   //about syntax error. :) )
$a1toEcho=print_r($a1, true);
echointextarea($a1toEcho,20,5);

Which means I could rebuild my function 🙂 and this thread could become solved 🙂