10.emoji

$pregRet = preg_match_all('/./u',$bookName,$matches);
if ($pregRet) {
    foreach ($matches[0] as $match) {
        if (strlen($match) >= 4) {
            $returnArr['status'] = -317;
            $returnArr['message'] = '不支持特殊字符';
            echo json_encode($returnArr);
            exit(0);
        }
    }
}

http://www.jianshu.com/p/2597d4c3a183

http://www.5idev.com/p-php_preg_match.shtml

http://liheanyway007.blog.163.com/blog/static/181773148201262952341896/

http://www.jb51.net/article/101157.htm

http://blog.youkuaiyun.com/ugg/article/details/44225723

https://zhidao.baidu.com/question/394232235.html

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mysql 修改字段支持 emoji

ALTER TABLE tb_case MODIFY COLUMN content VARCHAR(512) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;