function exception_error_handler($errno, $errstir, $errfile, $errline ) {
throw new ErrorException($errstr, $errno, 0, $errfile, $errline);;
}
set_error_handler("exception_error_handler");

/* Trigger exception */
strpos();

function exception_error_handler($errno, $errstir, $errfile, $errline ) {
    throw new ErrorException($errstr, $errno, 0, $errfile, $errline);;
}
set_error_handler("exception_error_handler");

try {
    /* Trigger exception */
    strpos();
    echo 'No exception was thrown';
}

//catch exception
catch(Exception $e) {
    echo 'Message: ' .$e->getMessage();
}