BadFunctionCallException()

(PHP 5 >= 5.1.0, PHP 7)

简介

Exception thrown if a callback refers to an undefined function or if some arguments are missing.

类摘要

finalpublicException::getMessage(void): string

finalpublicException::getPrevious(void): Throwable

finalpublicException::getCode(void): int

finalpublicException::getFile(void): string

finalpublicException::getLine(void): int

finalpublicException::getTrace(void): array

finalpublicException::getTraceAsString(void): string

publicException::__toString(void): string

finalprivateException::__clone(void): void

A typical use for this exception, is in conjunction with the is_callable() function.

For example: 
function foo($arg) {
  $func = 'do' . $arg;
  if (!is_callable($func)) {
    throw new BadFunctionCallException('Function ' . $func . ' is not callable');
  }
}