#25943 [Bgs]: String comparison with "if"
ID: 25943
User updated by: wolfgang dot wuensch at ww-informatik dot de
Reported By: wolfgang dot wuensch at ww-informatik dot de
Status: Bogus
Bug Type: Scripting Engine problem
Operating System: Windows
PHP Version: 4.3.2
New Comment:
Ok, I understand.
Is it possible to check, if the "double" could be to big?
I don't want to use strcmp() every time, because of
performance-problems. I don't know anything about the possibile values
of my "strings".
Would be fine, if the "if-Statement" works independent from my level of
skill concerning datatypes.
Previous Comments:
------------------------------------------------------------------------
[2003-10-22 01:21:12] alan_k@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
php -r \'
$a = \"0205100104040203000000000000001\";
$b = \"0205100104040203000000000000002\";
var_dump($a == $b);\'
== true
php -r \'
$a = \"0205100104040203000000000000001\";
$b = \"0205100104040203000000000000002\";
var_dump($a === $b);\'
== false.
php will cast strings to numbers and compare them.. - depending on your
system. the number may be too big to store in an double..
- use bcmath or === or strcmp...
------------------------------------------------------------------------
[2003-10-22 01:07:24] wolfgang dot wuensch at ww-informatik dot de
Description:
------------
I compare two strings, who are different from each other.
The if-Statement gives me a "true".
I want a "false".
Reproduce code:
---------------
$val1="020510010404020301";
$val2="020510010404020302";
if( $val1 == $val2 )
{
echo $val1;
echo "<br>";
echo $val2;
echo "<br>";
echo "is not good";
}
else {
echo "yeah";
}
Expected result:
----------------
go into the "else"
Actual result:
--------------
go into the "if"
Note:
var_dump() used with $var1 and $var2 gives me string(18)
strcmp() works fine.
------------------------------------------------------------------------
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Thread (3 messages)