How to optimize PHP code ?

PHP PHP Techniques PHP Interview Questions

Use Native PHP Functions
Use Single Quotes treated as plain string.
Frequently Used Switch Cases instead of if.elseif etc
INCLUDE FOREACH > FOR > WHILE
Disable Debugging Messages
Use Caching Techniques - You can use memcache for the reducing database load
Close the Connection Get into the habit to unset the variables and close database connection in your PHP code. It saves memory

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