note 32993 added to function.is-bool
| From: | miguel at lugopolis dot net | Date: | Fri, 13 Jun 2003 09:11:15 +0000 |
| Subject: | note 32993 added to function.is-bool | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-50268@lists.php.net to get a copy of this message | ||
This is a simple test to see how is_null() evaluates diferent datatypes. This test can be used to
see how the is_* functions evaluates for each data types.
$vars=array("NULL"=>NULL, // evaluates as Not boolean
"TRUE"=>TRUE, // evaluates as Boolean
"FALSE"=>FALSE, // evaluates as Boolean
"STRING"=>"", // evaluates as Not boolean
"INTEGER"=>0, // evaluates as Not boolean
"FLOAT"=>0.0, // evaluates as Not boolean
"ARRAY"=>array(), // evaluates as Not boolean
"OBJECT"=> new stdClass(), // evaluates as Not boolean
);
foreach ($vars as $type=>$value) {
if (is_bool($value)) {
echo "$type is bool\n";
} else {
echo "$type is NOT bool\n";
}
}
----
Manual Page -- http://www.php.net/manual/en/function.is-bool.php
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