eva(...)l errors what's the best way to output?

[Sims]

Hi,

I have an eval(...) and sometimes, (not often), i get an error.

I can catch the error quite easily,
if( FALSE === eval($code ))
{
// output the code
echo ( htmlentities($c ode );
}

That does give me the error and the code but how can i get the code to be
nicely lined up, or even have line numbers in front?
Just to make it easier to debug.

Many thanks

Sims.

[Pedro Graca]

Re: eva(...)l errors what's the best way to output?

["Followup-To:" header set to comp.lang.php.]
Sims wrote:[color=blue]
> I have an eval(...) and sometimes, (not often), i get an error.
>
> I can catch the error quite easily,
> if( FALSE === eval($code ))
> {
> // output the code
> echo ( htmlentities($c ode );
> }
>
> That does give me the error and the code but how can i get the code to be
> nicely lined up, or even have line numbers in front?
> Just to make it easier to debug.[/color]

Maybe like this? :)

<?php
$code = 'echo 7*3;
echo 7#3; // error! the # makes this the same as "echo 7 echo 7+3"
echo 7+3; // this is the line where the error is reported
return true;';

if (FALSE === eval($code)) {
echo '<pre>';
$code2 = explode("\n", htmlentities($c ode));
for ($i = 1; $i <= count($code2); ++$i) {
echo "$i\t{$code 2[$i-1]}\n";
}
echo '</pre>';
}
?>
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[Andy Hassall]

Re: eva(...)l errors what's the best way to output?

On 16 Mar 2004 23:52:58 GMT, Pedro Graca <hexkid@hotpop. com> wrote:
[color=blue]
>["Followup-To:" header set to comp.lang.php.]
>Sims wrote:[color=green]
>> I have an eval(...) and sometimes, (not often), i get an error.
>>
>> I can catch the error quite easily,
>> if( FALSE === eval($code ))
>> {
>> // output the code
>> echo ( htmlentities($c ode );
>> }
>>
>> That does give me the error and the code but how can i get the code to be
>> nicely lined up, or even have line numbers in front?
>> Just to make it easier to debug.[/color]
>
>Maybe like this? :)
>
><?php
>$code = 'echo 7*3;
>echo 7#3; // error! the # makes this the same as "echo 7 echo 7+3"
>echo 7+3; // this is the line where the error is reported
>return true;';
>
>if (FALSE === eval($code)) {
> echo '<pre>';
> $code2 = explode("\n", htmlentities($c ode));
> for ($i = 1; $i <= count($code2); ++$i) {
> echo "$i\t{$code 2[$i-1]}\n";
> }
> echo '</pre>';
>}
>?>[/color]

Or make it prettier with highlight_strin g?

<?php
$code = 'echo 7*3;
echo 7#3; // error! the # makes this the same as "echo 7 echo 7+3"
echo 7+3; // this is the line where the error is reported
return true;';

if (FALSE === eval($code))
{
echo "<hr>";
$linenum = 0;
foreach (explode("<br />", highlight_strin g("<?php\n$code \n?>", true)) as
$line)
printf("%-6d: %s<br>\n", $linenum++, $line);
}

?>

--
Andy Hassall <andy@andyh.co. uk> / Space: disk usage analysis tool
<http://www.andyh.co.uk > / <http://www.andyhsoftwa re.co.uk/space>

[Sims]

Re: eva(...)l errors what's the best way to output?

>[color=blue]
> Or make it prettier with highlight_strin g?
>
> <?php
> $code = 'echo 7*3;
> echo 7#3; // error! the # makes this the same as "echo 7 echo 7+3"
> echo 7+3; // this is the line where the error is reported
> return true;';
>
> if (FALSE === eval($code))
> {
> echo "<hr>";
> $linenum = 0;
> foreach (explode("<br />", highlight_strin g("<?php\n$code \n?>", true))[/color]
as[color=blue]
> $line)
> printf("%-6d: %s<br>\n", $linenum++, $line);
> }
>
> ?>
>[/color]

Thank you both, it works brilliantly.
Something not really needed but it does make my life a touch easier when
something does go wrong :)

Sims