PHP: Change Error Reporting Level | Different PHP Error Types

Debugging a PHP script, you may want to alter the error-displaying sensitivity on a particular page and control what types of errors should be reported.

The solution is the PHP error reporting function error_reporting():

error_reporting(E_ALL);                // everything
error_reporting(E_ERROR | E_PARSE);    // only major problems
error_reporting(E_ALL & ~E_NOTICE);    // everything but notices

As the parameters of the function, &, | and ~ are all bitwise operators to determine what kind of errors are to be reported. Be advised by the following explanation:

| stands for ‘OR‘.
& stands for ‘AND‘.
~ stands for ‘NOT‘.

PHP Error Types
Value	Constant	Description	Catchable
`1`	`E_ERROR`	Nonrecoverable error	No
`2`	`E_WARNING`	Recoverable error	Yes
`4`	`E_PARSE`	Parser error	No
`8`	`E_NOTICE`	Possible error	Yes
`16`	`E_CORE_ERROR`	Like `E_ERROR` but generated by the PHP core	No
`32`	`E_CORE_WARNING`	Like `E_WARNING` but generated by the PHP core	No
`64`	`E_COMPILE_ERROR`	Like `E_ERROR` but generated by the Zend Engine	No
`128`	`E_COMPILE_WARNING`	Like `E_WARNING` but generated by the Zend Engine	No
`256`	`E_USER_ERROR`	Like `E_ERROR` but triggered by calling trigger_error( )	Yes
`512`	`E_USER_WARNING`	Like `E_WARNING` but triggered by calling trigger_error( )	Yes
`1024`	`E_USER_NOTICE`	Like `E_NOTICE` but triggered by calling trigger_error( )	Yes
`2047`	`E_ALL`	Everything except `E_STRICT`	N/A
`2048`	`E_STRICT`	Runtime notices in which PHP suggests changes to improve code quality (since PHP 5)	N/A

PHP Error Types

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