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--TEST--
Bug #69202 (FILTER_FLAG_STRIP_BACKTICK ignored unless other flags are used)
--SKIPIF--
<?php if (!extension_loaded("filter")) die("skip"); ?>
--FILE--
<?php
var_dump(filter_var("``a`b`c``", FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_BACKTICK));
var_dump(filter_var("``a`b`c``", FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_BACKTICK));
var_dump(filter_var("``a`b`c``", FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH | FILTER_FLAG_STRIP_BACKTICK));
var_dump(filter_var("``a`b`c``", FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH));
?>
--EXPECT--
string(3) "abc"
string(3) "abc"
string(3) "abc"
string(9) "``a`b`c``"
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