PHP: Hypertext Preprocessor (original) (raw)

`Try this to know behavior:

', $resource ? 'TRUE' : 'FALSE', PHP_EOL, 'get_resource_type($resource) => ', get_resource_type($resource) ?: 'FALSE', PHP_EOL, 'is_resoruce($resource) => ', is_resource($resource) ? 'TRUE' : 'FALSE', PHP_EOL, PHP_EOL ; }$resource = tmpfile(); resource_test($resource, 'Check Valid Resource');fclose($resource); resource_test($resource, 'Check Released Resource');$resource = null; resource_test($resource, 'Check NULL'); ?>

It will be shown as...

[Check Valid Resource]
(bool)$resource => TRUE
get_resource_type($resource) => stream
is_resoruce($resource) => TRUE

[Check Released Resource]
(bool)$resource => TRUE
get_resource_type($resource) => Unknown
is_resoruce($resource) => FALSE

[Check NULL]
(bool)$resource => FALSE
get_resource_type($resource) => FALSE
Warning: get_resource_type() expects parameter 1 to be resource, null given in ... on line 10
is_resoruce($resource) => FALSE