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<?php function bar(string $str){ $str[0] = "b"; var_dump($str); } $str = ""; $str[0] = "b"; var_dump($str); bar(""); $str = "a"; $str[0] = "b"; var_dump($str); $str = "a"; $str[1] = "b"; var_dump($str);
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "b" string(1) "b" string(1) "b" string(2) "ab"

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