Mjh questions

Mjh answers

• Understanding Methods Chaining in Javascript
• PHP fastest way to register millions of records in MYSQL
• How to simplify this Laravel PHP code to one Eloquent query?
• COUNT(id) or MAX(id) - which is faster?
• Is it better/faster to do a multi insert or a many different insert in a pdo prepared statement?
• Do gaps in primary key slow down queries?
• What is the best way to index email address in MYSql