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# bindec

(PHP 3, PHP 4 , PHP 5)

bindec -- Binary to decimal

## Description

int bindec ( string binary_string)

Returns the decimal equivalent of the binary number represented by the binary_string argument.

bindec() converts a binary number to an integer. The largest number that can be converted is 31 bits of 1's or 2147483647 in decimal.

示範 1.bindec() example

`<?php echo bindec('110011') . "\n"; echo bindec('000110011') . "\n"; echo bindec('111'); ?>`

The above example will output:

    51
    51
    7

See also decbin(), octdec(), hexdec() and base_convert().

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