set_exception_handler
Sets a user-defined exception handler function
Description
callablenull set_exception_handler(callablenull $callback
)
Parameters
-
callback
-
The function to be called when an uncaught exception occurs.
This handler function needs to accept one parameter,
which will be the Throwable object that was thrown.
Both Error and Exception
implement the Throwable interface.
This is the handler signature:
void handler(Throwable $ex
)
null
may be passed instead, to reset this handler to its default state.
Return Values
Returns the previously defined exception handler, or null
on error. If
no previous handler was defined, null
is also returned.
Examples
Example #1 set_exception_handler example
<?php
function exception_handler(Throwable $exception) {
echo "Uncaught exception: " , $exception->getMessage(), "\n";
}
set_exception_handler('exception_handler');
throw new Exception('Uncaught Exception');
echo "Not Executed\n";
?>
See Also
- restore_exception_handler
- restore_error_handler
- error_reporting
- Exceptions