--TEST--
filter_var() and FILTER_SANITIZE_SPECIAL_CHARS
--FILE--
<?php
var_dump(filter_var("?><!@#$%^&*()}{~Qwertyuilfdsasdfgmnbvcxcvbn", FILTER_SANITIZE_SPECIAL_CHARS));
var_dump(filter_var("<data&sons>", FILTER_SANITIZE_SPECIAL_CHARS));
var_dump(filter_var("", FILTER_SANITIZE_SPECIAL_CHARS));
var_dump(filter_var("?><!@#$%^&*()}{~Qwertyuilfdsasdfgmnbvcxcvbn", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_LOW));
var_dump(filter_var("<data&sons>", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_LOW));
var_dump(filter_var("", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_LOW));
var_dump(filter_var("?><!@#$%^&*()}{~Qwertyuilfdsasdfgmnbvcxcvbn", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_HIGH));
var_dump(filter_var("<data&sons>", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_HIGH));
var_dump(filter_var("", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_HIGH));
var_dump(filter_var("кириллица", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_HIGH));
var_dump(filter_var("кириллица", FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_ENCODE_LOW));
echo "Done\n";
?>
--EXPECT--
string(55) "?><!@#$%^&*()}{~Qwertyuilfdsasdfgmnbvcxcvbn"
string(23) "<data&sons>"
string(0) ""
string(55) "?><!@#$%^&*()}{~Qwertyuilfdsasdfgmnbvcxcvbn"
string(23) "<data&sons>"
string(0) ""
string(55) "?><!@#$%^&*()}{~Qwertyuilfdsasdfgmnbvcxcvbn"
string(23) "<data&sons>"
string(0) ""
string(108) "кириллица"
string(18) "кириллица"
Done