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<?php var_dump(preg_match('//u', "\xF0A0808A")); var_dump(mb_convert_encoding('𠀋 ', 'HTML-ENTITIES', 'UTF-8'));
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead in /in/d0QN1 on line 3 string(10) "&#131083; "

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