Bug #51795 [Bgs]: Loose comparison too loose
Edit report at http://bugs.php.net/bug.php?id=51795&edit=1
ID: 51795
Updated by: rasmus@php.net
Reported by: slevinski at gmail dot com
Summary: Loose comparison too loose
Status: Bogus
Type: Bug
Package: Strings related
Operating System: Ubuntu
PHP Version: 5.2.13
New Comment:
Or prefix your strings with 0x if you want to force hex.
Previous Comments:
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[2010-05-11 22:18:02] dtajchreber@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
"0080" turns into an 80 and is stored as an int. "80e0" turns into 80 x
10^0 which is also 80 but is stored as a float. 80(int) == 80(float).
80(int) !== 80(float). I didn't understand the rest of what you wrote
but php.net/hexdec might be of some use.
See:
http://www.php.net/manual/en/language.types.string.php#language.types.string.conversion
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[2010-05-11 16:25:33] slevinski at gmail dot com
Description:
------------
if ("0080" == "80e0") echo "Smoking crack!";
I created a double octet coded character set. I'm using 4 hex to
represent each character. I'm using a switch statement to get a token
based on the value. The string "80e0" is incorrectly setting off the
case "0080" statement.
The strict comparison of === works as expected, but the switch uses a
loose comparison.
Test script:
---------------
if ("0080" == "80e0") {
echo "Too loose";
} else {
echo "Just right";
}
Expected result:
----------------
Just right
Actual result:
--------------
Too loose
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Edit this bug report at http://bugs.php.net/bug.php?id=51795&edit=1
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