Different types of errors in php:

• E_ERROR: A fatal error that causes script termination
• E_WARNING: Run-time warning that does not cause script termination
• E_PARSE: Compile time parse error.
• E_NOTICE: Run time notice caused due to error in code
• E_CORE_ERROR: Fatal errors that occur during PHP's initial startup (installation)
• E_CORE_WARNING: Warnings that occur during PHP's initial startup
• E_COMPILE_ERROR: Fatal compile-time errors indication problem with script.
• E_USER_ERROR: User-generated error message.
• E_USER_WARNING: User-generated warning message.
• E_USER_NOTICE: User-generated notice message.
• .E_STRICT: Run-time notices.
• E_RECOVERABLE_ERROR: Catchable fatal error indicating a dangerous error
• E_ALL: Catches all errors and warnings