How to convert decimal to hexadecimal in PHP? (code example)

In PHP, you can convert decimal to hexadecimal by using the built-in function dechex() or base_convert() function. The following article will introduce to you how the dechex() and base_convert() functions convert decimal to hexadecimal. I hope it will be helpful to you. [Video tutorial recommendation:PHP tutorial]

Method 1: Use the dechex() function to convert decimal to hexadecimal

The dechex() function is a built-in function in PHP that is used to convert a given decimal number into its equivalent hexadecimal number. The word "dechex" in the function name stands for decimal to hexadecimal.

Note:

● The dechex() function only applies to unsigned numbers. If the argument passed to it is negative, then it will treat it as an unsigned number.

●The maximum number that can be converted is 4294967295 (decimal), and the result is "ffffffff".

Example:Convert decimal to hexadecimal

"; echo "十进制 ".$num2." 转换成十六进制 ".dechex($num2)."
"; echo "十进制 ".$num3." 转换成十六进制 ".dechex($num3)."
"; ?>

Output:

Method 2: Use the base_convert() function to convert decimal to hexadecimal

The base_convert() function can convert numbers between any bases.

Example 1:Convert decimal to hexadecimal

"; echo "十进制 ".$num2." 转换成十六进制 ".base_convert($num2,10,16)."
"; ?>

Output:

十进制 10 转换成十六进制 a 十进制 47 转换成十六进制 2f

Example 2:Convert decimal Convert hexadecimal to decimal

"; ?>

Output:

十六进制 16e7 转换成十进制 5863

Example 3:Convert octal to decimal

"; ?>

Output:

八进制 0031 转换成十进制 25

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