note 79504 modified in function.is-int by bjori
| From: | bjori@php.net | Date: | Wed, 05 Dec 2007 05:23:20 +0000 |
| Subject: | note 79504 modified in function.is-int by bjori | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-132833@lists.php.net to get a copy of this message | ||
a small modification to the isInt checks provided by lclkk at urbanvagabond dot net to make them
work for scientific notation integers that are provided in string form:
function myIsInt ($x) {
return (is_numeric($x) ? intval($x+0) == $x : false);
}
function Test($x) {
echo "$x is " . ( myIsInt($x) ? ('an integer. The integer value is ' .
intval($x+0)) : 'not an integer.');
echo "\n";
}
Note the additional adding of 0 to $x in both functions.
This would allow the following tests to return true:
Test('53.45e2'); // 5345
Test('53.45e3'); // 53450
and this one to return false:
Test('53.45e1'); // 534.5
--was--
a small modification to the isInt checks provided by lclkk at urbanvagabond dot net to make them
work for scientific notation integers that are provided in string form:
function myIsInt ($x) {
return (is_numeric($x) ? intval($x+0) == $x : false);
}
function Test($x) {
echo "$x is " . ( myIsInt($x) ? ('an integer. The integer value is ' .
intval($x+0)) : 'not an integer.');
echo "\n";
}
Not the additional adding of 0 to $x in both functions.
This would allow the following tests to return true:
Test('53.45e2'); // 5345
Test('53.45e3'); // 53450
and this one to return false:
Test('53.45e1'); // 534.5
http://php.net/manual/en/function.is-int.php