(PHP 4 )

func_num_args --  Returns the number of arguments passed to the function


int func_num_args ( void )

Returns the number of arguments passed into the current user-defined function. func_num_args() will generate a warning if called from outside of a user-defined function.

function foo()
$numargs = func_num_args();
"Number of arguments: $numargs\n";

foo(1, 2, 3);    // Prints 'Number of arguments: 3'

func_num_args() may be used in conjunction with func_get_arg() and func_get_args() to allow user-defined functions to accept variable-length argument lists.

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