How to convert decimal to hexadecimal in php

php method to convert decimal to hexadecimal: 1. Use the dechex() function, the syntax "dechex($number)"; 2. Use the base_convert() function, the syntax "base_convert($number, 10,16)”.

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

php converts decimal into hexadecimal

1. Use the dechex() function

dechex($number) function to convert decimal Number $number is converted into a hexadecimal number.

<?php
echo dechex("30") . "<br>";
echo dechex("10") . "<br>";
echo dechex("1587") . "<br>";
echo dechex("70");
?>

#2. Use the base_convert() function

base_convert() function to convert numbers between arbitrary bases.

base_convert(number,frombase,tobase);

• number Required. Specifies the 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=10;
$num2=47;
echo "十进制 ".$num1." 转换成十六进制 ".base_convert($num1,10,16)."<br>"; 
echo "十进制 ".$num2." 转换成十六进制 ".base_convert($num2,10,16)."<br>"; 
?>

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