PHP : writing a simple removeEmoji function

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I think the preg_replace function is the simpliest solution.

As EaterOfCode suggests, I read the wiki page and coded new regex since none of SO (or other websites) answers seemed to work for Instagram photo captions (API returning format) . Note: /u identifier is mandatory to match \x unicode chars.

public static function removeEmoji($text) {

    $clean_text = "";

    // Match Emoticons
    $regexEmoticons="/[\x{1F600}-\x{1F64F}]/u";
    $clean_text = preg_replace($regexEmoticons, '', $text);

    // Match Miscellaneous Symbols and Pictographs
    $regexSymbols="/[\x{1F300}-\x{1F5FF}]/u";
    $clean_text = preg_replace($regexSymbols, '', $clean_text);

    // Match Transport And Map Symbols
    $regexTransport="/[\x{1F680}-\x{1F6FF}]/u";
    $clean_text = preg_replace($regexTransport, '', $clean_text);

    // Match Miscellaneous Symbols
    $regexMisc="/[\x{2600}-\x{26FF}]/u";
    $clean_text = preg_replace($regexMisc, '', $clean_text);

    // Match Dingbats
    $regexDingbats="/[\x{2700}-\x{27BF}]/u";
    $clean_text = preg_replace($regexDingbats, '', $clean_text);

    return $clean_text;
}

The function does not remove all emojis since there are many more, but you get the point.

Please refer to unicode.org – full emoji list (thanks Epoc)

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