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--TEST--
strtr() trying to replace an empty string
--FILE--
<?php
var_dump(strtr("foo", ["" => "bar"]));
var_dump(strtr("foo", ["" => "bar", "x" => "y"]));
?>
--EXPECTF--
Warning: strtr(): Ignoring replacement of empty string in %s on line %d
string(3) "foo"
Warning: strtr(): Ignoring replacement of empty string in %s on line %d
string(3) "foo"
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