is_resource
(PHP 4 , PHP 5) is_resource --
Finds whether a variable is a resource
Descriptionbool is_resource ( mixed var ) is_resource() returns TRUE if the variable
given by the var parameter is a
resource, otherwise it returns FALSE.
Пример 1. using is_resource()
<?php
$db_link
= @
mysql_connect
(
'localhost'
,
'mysql_user'
,
'mysql_pass'
);
if (!
is_resource
(
$db_link
)) {
die(
'Can\'t connect : '
.
mysql_error
());
}
?>
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See the documentation on the resource-type for
more information, and
get_resource_type().
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