The BadFunctionCallException class

(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

BadFunctionCallException extends LogicException {
/* 继承的属性 */
protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
/* 继承的方法 */
final public Exception::getMessage ( void ) : string
final public Exception::getPrevious ( void ) : Throwable
final public Exception::getCode ( void ) : int
final public Exception::getFile ( void ) : string
final public Exception::getLine ( void ) : int
final public Exception::getTrace ( void ) : array
final public Exception::getTraceAsString ( void ) : string
public Exception::__toString ( void ) : string
final private Exception::__clone ( void ) : void
}

User Contributed Notes

evguenia dot chagnon at gmail dot com 26-Jan-2017 12:14
For example:

function foo($arg) {
    $func = 'do' . $arg;
    if (!is_callable($func)) {
        throw new BadFunctionCallException('Function ' . $func . ' is not callable');
    }
}
tom at tomwardrop dot com 15-Nov-2009 07:42
A typical use for this exception, is in conjunction with the is_callable() function.