Sha256: 4f5cacba8327032ad8ebb4c5353184e38bcbb4ca649b0e1a920cbdcd32ea26bd

Contents?: true

Size: 462 Bytes

Versions: 396

Compression:

Stored size: 462 Bytes

Contents

<?php

/**
 * Converts binary value to a decimal.
 *
 * @param string $binary
 *
 * @return int
 */
function parse_binary($binary)
{
    $reversed = strrev($binary);

    for ($i = 0, $decimal = 0; $i < strlen($reversed); ++$i) {
        if ($reversed[$i] !== '0' && $reversed[$i] !== '1') {
            throw new InvalidArgumentException('Invalid binary string.');
        }

        $decimal += ((int) $reversed[$i]) * (2 ** $i);
    }

    return $decimal;
}

Version data entries

396 entries across 396 versions & 1 rubygems

Version Path
trackler-2.2.1.139 tracks/php/exercises/binary/example.php
trackler-2.2.1.138 tracks/php/exercises/binary/example.php
trackler-2.2.1.137 tracks/php/exercises/binary/example.php
trackler-2.2.1.136 tracks/php/exercises/binary/example.php
trackler-2.2.1.135 tracks/php/exercises/binary/example.php
trackler-2.2.1.134 tracks/php/exercises/binary/example.php
trackler-2.2.1.133 tracks/php/exercises/binary/example.php
trackler-2.2.1.132 tracks/php/exercises/binary/example.php
trackler-2.2.1.131 tracks/php/exercises/binary/example.php
trackler-2.2.1.130 tracks/php/exercises/binary/example.php
trackler-2.2.1.129 tracks/php/exercises/binary/example.php
trackler-2.2.1.128 tracks/php/exercises/binary/example.php
trackler-2.2.1.127 tracks/php/exercises/binary/example.php
trackler-2.2.1.126 tracks/php/exercises/binary/example.php
trackler-2.2.1.125 tracks/php/exercises/binary/example.php
trackler-2.2.1.124 tracks/php/exercises/binary/example.php
trackler-2.2.1.123 tracks/php/exercises/binary/example.php
trackler-2.2.1.122 tracks/php/exercises/binary/example.php
trackler-2.2.1.121 tracks/php/exercises/binary/example.php
trackler-2.2.1.120 tracks/php/exercises/binary/example.php