Check Emoji exist in string

CheckEmoji.php

/**
 * Check emoji from string
 * 
 * @return bool if existed emoji in string
 */
function checkEmoji($str) 
{
    $regexEmoticons = '/[\x{1F600}-\x{1F64F}]/u';
    preg_match($regexEmoticons, $str, $matches_emo);
    if (!empty($matches_emo[0])) {
        return false;
    }
    
    // Match Miscellaneous Symbols and Pictographs
    $regexSymbols = '/[\x{1F300}-\x{1F5FF}]/u';
    preg_match($regexSymbols, $str, $matches_sym);
    if (!empty($matches_sym[0])) {
        return false;
    }

    // Match Transport And Map Symbols
    $regexTransport = '/[\x{1F680}-\x{1F6FF}]/u';
    preg_match($regexTransport, $str, $matches_trans);
    if (!empty($matches_trans[0])) {
        return false;
    }
   
    // Match Miscellaneous Symbols
    $regexMisc = '/[\x{2600}-\x{26FF}]/u';
    preg_match($regexMisc, $str, $matches_misc);
    if (!empty($matches_misc[0])) {
        return false;
    }

    // Match Dingbats
    $regexDingbats = '/[\x{2700}-\x{27BF}]/u';
    preg_match($regexDingbats, $str, $matches_bats);
    if (!empty($matches_bats[0])) {
        return false;
    }

    return true;
}