https://blog.kerus.net/1645/install-php-7-4-fpm-remirepo-on-centos

https://computingforgeeks.com/how-to-install-php-7-4-on-centos-7/

https://www.youtube.com/watch?v=DHUxnUX7Y2Y

http://www.slimframework.com/

https://frend.tistory.com/6

https://chocorolls.tistory.com/48

https://multifrontgarden.tistory.com/252

https://medium.com/@khwsc1/js%EB%A1%9C-10%EB%B6%84%EB%A7%8C%EC%97%90-rest-api-graphql-%EC%84%9C%EB%B2%84-%EA%B0%9C%EB%B0%9C%ED%95%98%EA%B8%B0-d28148dbdef2

DirectoryIndex index.html 에서 index.php도 추가

AddType application/x-compress .Z

AddType application/x-gzip .gz .tgz

AddType application/x-httpd-php .php .htm .html .inc .php4 .php3 .dna

AddType application/x-httpd-php-source .phps

php.ini의 short_open_tag를 Off에서 On으로 변경한다. (반드시!! 이거 완전 복병임!!)

컴포저 메모리 오류 시

/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
/sbin/swapon /var/swap.1

DB: KRX, cy.cho and dna!2****