bindec

 number bindec ( string $binary_string ) 

説明

Returns the decimal equivalent of the binary number represented by the binary_string argument. bindec() converts a binary number to an integer or, if needed for size reasons, float. bindec() interprets all binary_string values as unsigned integers. This is because bindec() sees the most significant bit as another order of magnitude rather than as the sign bit.

戻り値

The decimal value of binary_string