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The BadFunctionCallException class

(PHP 5 >= 5.1.0, PHP 7)

Introduction

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

Class synopsis

BadFunctionCallException extends LogicException {

/* Inherited properties */

protected string $message ;

protected int $code ;

protected string $file ;

protected int $line ;

/* Inherited methods */

final public Exception::getMessage ( void ) : string

final public Exception::getPrevious ( void ) : Throwable

final public Exception::getCode ( void ) : mixed

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

}

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User Contributed Notes 4 notes

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tom at tomwardrop dot com ¶

9 years ago


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

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evguenia dot chagnon at gmail dot com ¶

2 years ago


For example: 

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

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roland at mxchange dot org ¶

1 year ago


You can also throw BadMethodCallException within a method when certain pre-conditions to safely call that method are not met.

For example when a method <?php $foo->analyzeData(); ?> has been called but no data as previously been loaded (from file "import" for database, wherever from).

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-5

Dawid Krysiak ¶

8 years ago


Direct known subclasses:
BadMethodCallException

So BadMethodCallException can be used in case the subject function is or should be a part of class / object - it's use defines the case more precisely.

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