转换复杂字符
如何做...
echo "\u{202E}Reversed text";
echo "\u{202D}"; // returns output to left-to-rightecho "ma\u{00F1}ana"; // shows mañanaecho "man\u{0303}ana"; // also shows mañanaecho "\u{00E9}l\u{00E8}ve";
echo "e\u{0301}le\u{0300}ve";如何运行...

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