How to convert hexadecimal value into string in php

In PHP, you can use the hex2bin() function to convert hexadecimal values ​​into strings. The function of this function is to convert hexadecimal values ​​into ASCII-encoded character values, that is, strings , the syntax is "hex2bin (hexadecimal value)"; if the conversion is successful, the corresponding string is returned, if it fails, FALSE is returned.

The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer

In php, You can use the hex2bin() function to convert hexadecimal values ​​to strings.

hex2bin() function can convert hexadecimal values ​​into ASCII-encoded character values, that is, strings.

Syntax:

hex2bin($string)

• $string: Specifies the hexadecimal value to be converted and cannot be omitted.

Return value: Returns the ASCII character value of the converted string, or FALSE if it fails.

Example:

<?php
$hexstr="48656c6c6f20576f726c6421";
$str=hex2bin($hexstr);
echo $str;
?>

Output:

Explanation:

The opposite effect of the hex2bin() function is the bin2hex() function.

bin2hex() function converts a string of ASCII characters into a hexadecimal value.

bin2hex(string)

Return value: Returns the hexadecimal value of the string to be converted.

<?php
echo bin2hex("Hello!")."<br>";
echo bin2hex("123")."<br>";
echo bin2hex("10")."<br>";
?>

Extended knowledge: Convert other base data into hexadecimal strings

1. dechex() function Conversion

dechex() function converts a decimal number to a hexadecimal number.

dechex(number);

Return value: a string containing a hexadecimal number with a decimal value.

Example:

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

2. base_convert() function conversion

base_convert() function converts numbers between arbitrary bases.

base_convert(number,frombase,tobase);

Parameters	Description
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.

When the value of parameter tobase is 16, other base numbers can be converted into hexadecimal numbers.

Example:

<?php
echo base_convert("30", 10, 16) . "<br>";
echo base_convert("364", 8, 16) . "<br>";
?>

Recommended learning: "PHP Video Tutorial"

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