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I have a simple custom error handler that writes in a error log file some useful debug infos.
it's work for everything but it's not get triggered for FATAL error.
Any way to solve this?
Currently to bypass this circumstance I have registered a shutdown function too that checks error_get_last()
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You can "catch" these "fatal" errors by using set_error_handler() and checking for E_RECOVERABLE_ERROR. I find it useful to throw an Exception when this error is caught, then you can use try/catch.
Fatal errors are fatal. Even if you were to write your own error handler or use the @ error suppression operator, E_FATAL errors will still cause the script to halt execution. The only way to handle this is to use function_exists() (and possibly is_callable() for good measure) as in your example above.
The set_error_handler() function sets a user-defined error handler function. Note: The standard PHP error handler is completely bypassed if this function is used, and the user-defined error handler must terminate the script, die(), if necessary.
Nope, that's just a limitation of set_error_handler(); it doesn't handle all errors.
The following error types cannot be handled with a user defined function:
E_ERROR,E_PARSE,E_CORE_ERROR,E_CORE_WARNING,E_COMPILE_ERROR,E_COMPILE_WARNING, and most ofE_STRICTraised in the file whereset_error_handler()is called.
The register_shutdown_function() and error_get_last() is a decent workaround.
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There are only hackish ways to solve it, e.g. by using register_shutdown_function() and then checking if an error occurred inside that function.
PHP has log_errors for a reason, you can make PHP log any error to syslog or a logfile without a single line of custom code. So using set_error_handler() for this purpose is not needed at all and should be avoided unless you need e.g. a stacktrace.
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