Binary to Decimal Conversion in PHP
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Binary to Decimal Conversion in PHP
Given a binary number, the task is to convert Binary to Decimal Number in PHP.
Examples:
Input: 1010
Output: 10
Input: 11001
Output: 25
There are different methods to convert Binary to Decimal Numbers, These are:
Using bindec() Function
The bindec() function returns the decimal equivalent of the binary number. It accepts a string argument i.e binary number and returns decimal equivalent.
Syntax:
bindec( $bin_num );
Example:
<?php $binNum = 110010; $decNum = bindec($binNum); echo "Decimal Number: " . $decNum; ?> |
Decimal Number: 50
Using base_convert() Function
The base_convert() function converts a given number in an arbitrary base to a desired base. In this case, we use 2 as fromBase and 10 as desireBase.
Syntax:
string base_convert($inpNumber, $fromBase, $desBase)
Using Conversion AlgorithmExample:
<?php $binNum = 110010; $decNum = base_convert($binNum, 2, 10); echo "Decimal Number: " . $decNum; ?> |
Decimal Number: 50
Using Conversion Algorithm
In this case, we use mathematical conversion algorithm to convert binary to its decimal equivalent. Here, we convert a binary number to decimal by iterating through each bit and summing up the corresponding powers of 2.
<?php function binToDec($binNum) { $decNum = 0; $len = strlen($binNum); for ($i = 0; $i < $len; $i++) { $decNum += (int)$binNum[$i] * pow(2, $len - $i - 1); } return $decNum; } $binNum = '110010'; $decNum = binToDec($binNum); echo "Decimal Number: " . $decNum; ?> |
Decimal Number: 50
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