Php if not exists
- Php if not exists create folder
- Php if file not exists
- Php if file not exists create
- Php if function not exists
- Php insert if not exists
- Php function if not exists declare
- Php fopen if not exists
- Php define if not exists
- Php create table if not exists
- Php array push if not exists
- Php create database if not exists
- Php define function if not exists
- Php array add if not exists
- Php start session if not exists
- Php create path if not exists