How to convert php string to hexadecimal

How to convert php string to hexadecimal: first find and open common.php; then add the strToHex function; finally use the strToHex function to convert the string to hexadecimal.

Recommended: "PHP Video Tutorial"

PHP string and hexadecimal conversion

I was working on a project today because I needed to call the interface of someone else’s website. As a result, I needed to perform hexadecimal encryption on the request and return time, so I checked the information on the Internet and made a conversion. Demo makes a record.

If used under TP, you can put the following functions in common.php

1. Encryption function

<?php
/**
*字符串转十六进制函数
*@pream string $str=&#39;abc&#39;;
*/
function strToHex($str){
$hex="";
for($i=0;$i<strlen($str);$i++)
$hex.=dechex(ord($str[$i]));
$hex=strtoupper($hex);
return $hex;
}
?>

2. Decryption function

<?php
/**
*十六进制转字符串函数
*@pream string $hex=&#39;616263&#39;;
*/
function hexToStr($hex){
$str="";
for($i=0;$i<strlen($hex)-1;$i+=2)
$str.=chr(hexdec($hex[$i].$hex[$i+1]));
return $str;
}
?>

The encryption and decryption conversion function uses the Demo example, which is written in a class for convenience.

<?php
class Test{
/**
*字符串转十六进制函数
*@pream string $str=&#39;abc&#39;;
*/
public function strToHex($str){
$hex="";
for($i=0;$i<strlen($str);$i++)
$hex.=dechex(ord($str[$i]));
$hex=strtoupper($hex);
return $hex;
}
/**
*十六进制转字符串函数
*@pream string $hex=&#39;616263&#39;;
*/
public function hexToStr($hex){
$str="";
for($i=0;$i<strlen($hex)-1;$i+=2)
$str.=chr(hexdec($hex[$i].$hex[$i+1]));
return $str;
}
}
<span style="white-space:pre"> </span>//测试Demo效果
$test = new Test();
$str = &#39;要加密的内容sxfenglei&#39;;
$data = $test->strToHex($str);
echo &#39;加密内容:要加密的内容sxfenglei <br>&#39;.$data.&#39;<hr>&#39;;
$output = $test->hexToStr($data);
echo &#39;解密内容:E8A681E58AA0E5AF86E79A84E58685E5AEB9737866656E676C6569 <br>&#39;.$output;
?>

Run result:

加密内容:要加密的内容sxfenglei
E8A681E58AA0E5AF86E79A84E58685E5AEB9737866656E676C6569
解密内容:E8A681E58AA0E5AF86E79A84E58685E5AEB9737866656E676C6569
要加密的内容sxfenglei

The above is the detailed content of How to convert php string to hexadecimal. For more information, please follow other related articles on the PHP Chinese website!