On Friday 31 January 2003 05:55, James E Hicks III wrote:
> This code:
> <?
> $var1 = "020610000030012452";
> $var2 = "020610000030012451";
> $test1 = (string) $var1
> $test2 = (string) $var2;
> echo gettype($test2)."---".gettype($test1)."<BR><BR>";
> echo $test2."---".$test1."<BR><BR>";
> if ( $test2 != $test1){
> echo ("The variables are not equal.");
> }
> ?>
> Produces the following output (Notice that it doesn't say vars are not
> equal);
> --------------------------------------------------------------------
> string---string
>
> 020610000030012451---020610000030012452
>
> --------------------------------------------------------------------
>
> And this code:
> <?
> $var1 = "A"."020610000030012452";
> $var2 = "A"."020610000030012451";
> $test1 = (string) $var1
> $test2 = (string) $var2;
> echo gettype($test2)."---".gettype($test1)."<BR><BR>";
> echo $test2."---".$test1."<BR><BR>";
> if ( $test2 != $test1){
> echo ("The variables are not equal.");
> }
> ?>
> Produces the following output (Notice it printed the message about vars not
> being equal);
> --------------------------------------------------------------------
> string---string
>
> 020610000030012451---020610000030012452
>
> The variables are not equal.
> --------------------------------------------------------------------
>
> Why does PHP Version 4.2.3 ignore my (string) - cast to string in the if
> evaluation?
> I even tried putting the (string) inside the IF statement with no
> difference in execution.
>
>
> P.S.
> The variables were reporting string before I even tried (string).
String comparisons are best done using strcmp() or:
if ($string1 === $string2) { echo "equal"; }
or
if ($string1 !== $string2) { echo "not equal"; }
--
Jason Wong -> Gremlins Associates -> www.gremlins.biz
Open Source Software Systems Integrators
* Web Design & Hosting * Internet & Intranet Applications Development *
/*
Code like that would not pass through anybody's yuck-o-meter.
- Linus Torvalds about design on linux-kernel
*/
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