Think Different and Hunger for

https://stackoverflow.com/questions/21333469/in-array-expects-parameter-2-to-be-array-null-given

curl errorno 60

https://github.com/google/google-api-php-client/issues/788

https://stackoverflow.com/questions/21114371/php-curl-error-code-60

php 스톰 관련 에러로그가 계속 저렇게 쌓였었는데 

아래 글에서 php 가 여러개 깔려잇는경우 생길수있다고 해서  지워주니깐 해결 됨 

http://stackoverflow.com/questions/32201991/phpstorm-is-throwing-an-error-for-phpcs

http://stackoverflow.com/questions/4237090/how-to-pass-array-through-hidden-field

https://www.jetbrains.com/help/phpstorm/2016.2/viewing-local-history-of-a-file-or-folder.html

http://zetawiki.com/wiki/PHP_%ED%95%A8%EC%88%98_xmp()

http://www.convertstring.com/ko/Hash/SHA256

암호화 관련 내용 

http://crazia.tistory.com/entry/PKI-PKI-%EC%9D%98-%EA%B8%B0%EB%B3%B8-%EA%B0%9C%EB%85%90-%EA%B0%84%EB%8B%A8-%EC%84%A4%EB%AA%85

http://stackoverflow.com/questions/3446216/what-is-the-difference-between-single-quoted-and-double-quoted-strings-in-php

http://vivaceg.tistory.com/entry/PHP-%EC%98%88%EC%A0%9C-%EC%9C%A0%EB%8B%88%EC%BD%94%EB%93%9CUTF-8-%ED%95%9C%EA%B8%80-%EB%AC%B8%EC%9E%90%EC%97%B4-%ED%81%AC%EA%B8%B0%EA%B8%80%EC%9E%90-%EC%88%98-%EA%B5%AC%ED%95%98%EA%B8%B0-Unicode-String-Size

테스트 

var_dump(strlen('한글문')); - 9byte
var_dump(mb_strlen("한글문", "UTF-8")); exit; - 3byte