note 103334 added to filter.filters.validate
| From: | php at sethsyberg dot com | Date: | Thu, 07 Apr 2011 20:00:18 +0000 |
| Subject: | note 103334 added to filter.filters.validate | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-178613@lists.php.net to get a copy of this message | ||
When validating floats, you must use the Identical/Not identical operators for proper validation of
zeros:
This will not work as expected:
<?php
$x = 0;
if (!filter_var($x, FILTER_VALIDATE_FLOAT)) {
echo "$x is a valid float";
} else {
echo "$x is NOT a valid float";
}
?>
This will work as expected:
<?php
$x = 0;
if (filter_var($x, FILTER_VALIDATE_FLOAT)!== false) {
echo "$x is a valid float";
} else {
echo "$x is NOT a valid float";
}
?>
----
Server IP: 208.69.120.55
Probable Submitter: 69.91.186.48
----
Manual Page -- http://www.php.net/manual/en/filter.filters.validate.php
Edit -- https://master.php.net/note/edit/103334
Del: integrated -- https://master.php.net/note/delete/103334/integrated
Del: useless -- https://master.php.net/note/delete/103334/useless
Del: bad code -- https://master.php.net/note/delete/103334/bad+code
Del: spam -- https://master.php.net/note/delete/103334/spam
Del: non-english -- https://master.php.net/note/delete/103334/non-english
Del: in docs -- https://master.php.net/note/delete/103334/in+docs
Del: other reasons-- https://master.php.net/note/delete/103334
Reject -- https://master.php.net/note/reject/103334
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