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<?php $fh = fopen('/dev/urandom', 'r'); print_r($fh); echo "\n"; var_export($fh); echo "\n"; var_dump($fh); echo "\n"; printf( '%s of type "%s"', print_r($fh, true), get_resource_type($fh) );
Output for 5.2.3 - 7.1.0
Resource id #5 NULL resource(5) of type (stream) Resource id #5 of type "stream"
Output for 5.0.0 - 5.2.2
Resource id #2 NULL resource(2) of type (stream) Resource id #2 of type "stream"
Output for 4.3.0 - 4.4.9
Resource id #1 NULL resource(1) of type (stream) Resource id #1 of type "stream"