PHP sanitize/validate input

#php #course #tutorial 00:00:00 introduction 00:01:30 INPUT_SANITIZE_SPECIAL_CHARS 00:03:02 INPUT_SANITIZE_NUMBER_INT 00:04:08 INPUT_SANITIZE_EMAIL 00:05:10 INPUT_VALIDATE_INT 00:06:44 INPUT_VALIDATE_EMAIL 00:07:38 conclusion