--TEST-- imap_utf8() tests --SKIPIF-- <?php if (!extension_loaded("imap")) print "skip"; ?> --FILE-- <?php var_dump(imap_utf8("")); var_dump(imap_utf8(1)); var_dump(imap_utf8(array(1,2))); var_dump(imap_utf8("test")); echo "Done\n"; ?> --EXPECTF-- string(0) "" string(1) "1" Warning: imap_utf8() expects parameter 1 to be string, array given in %s on line %d NULL string(4) "%s" Done