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- --TEST--
- Valid Unicode escape sequences
- --FILE--
- <?php
- var_dump("\u{61}"); // ASCII "a" - characters below U+007F just encode as ASCII, as it's UTF-8
- var_dump("\u{FF}"); // y with diaeresis
- var_dump("\u{ff}"); // case-insensitive
- var_dump("\u{2603}"); // Unicode snowman
- var_dump("\u{1F602}"); // FACE WITH TEARS OF JOY emoji
- var_dump("\u{0000001F602}"); // Leading zeroes permitted
- ?>
- --EXPECT--
- string(1) "a"
- string(2) "ÿ"
- string(2) "ÿ"
- string(3) "☃"
- string(4) "😂"
- string(4) "😂"
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