How to convert binary to decimal in php

php method to convert binary to decimal: 1. Use the bindec() function, the syntax "bindec($binary_string)"; 2. Use the base_convert() function, the syntax "base_convert($binary_string,2,10 )".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php converts binary For decimal

1, use the bind() function

bindec($binary_string) function to convert the binary number$binary_stringConvert to decimal number.

<?php
echo bindec("0011") . "<br>";
echo bindec("01") . "<br>";
echo bindec("11000110011") . "<br>";
echo bindec("111");
?>

Output result:

2. Use base_convert() function

base_convert() Function converts numbers between arbitrary bases.

base_convert($binary_string,$frombase,$tobase);

• $binary_string Required. Specifies the binary number to be converted.

• #$frombase Required. Specifies the original base of the number. Between 2 and 36 (inclusive). Numbers above decimal are represented by the letters a-z, such as a for 10, b for 11, and z for 35.​

• #$tobase Required. Specifies the base to be converted. Between 2 and 36 (inclusive). Numbers above decimal are represented by the letters a-z, such as a for 10, b for 11, and z for 35.​

<?php
header("content-type:text/html;charset=utf-8");
$num1="0011";
$num2="11000110011";
echo "二进制 ".$num1." 转换成十进制 ".base_convert($num1,2,10)."<br>"; 
echo "二进制 ".$num2." 转换成十进制 ".base_convert($num2,2,10)."<br>"; 
?>

Output results:

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