note 79146 deleted from language.types.string by danbrown
| From: | danbrown@php.net | Date: | Tue, 17 May 2011 14:17:49 +0000 |
| Subject: | note 79146 deleted from language.types.string by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-179812@lists.php.net to get a copy of this message | ||
Note Submitter: qriz at example dot com
----
<?php
$a = '2007-11-05 15:17:49';
$b = '2007-11-05 15:17:48';
$bool = $a > $b;
var_dump($bool); //bool(true)
?>
works correctly since there is a comparing between strings. The comparisson is done on the last
number/letter (since thats the only thing that is difference in the string) and that is in this
case: the 9 and 8.
8 > 9 = true
if you want to compare the string as pure numbers then you must type cast it to numbers or type
juggle it:
<?php
$a = '2007-11-05 15:17:49';
$b = '2007-11-05 15:17:48';
$bool1 = ($a + 0) > ($b + 0); // 2007 > 2007
$bool2 = (int) $a > (int) $b; // 2007 > 2007
$bool3 = intval($a) > intval($b); // 2007 > 2007
var_dump($bool1,$bool2,$bool3); //bool(false)
?>