CD001 questions

CD001 answers

• PHP garbage collection when using static method to create instance
• change rows depending on the ordernumber in database
• Join 2 children tables with a parent tables without duplicated
• PHP password_hash(), default or custom salt? [duplicate]
• php preg_match between bracket
• Why does PHP replace pluses with spaces in $_COOKIE?
• How to check if the row has been updated?
• Determine if two names are close to each other
• safely handling remote "hotlinked" images
• Detect if session cookie set properly in PHP