PHP Implementation of File and16Example of Method to Convert between Different Number Systems

Preface

This article introduces how to use PHP to implement file and16Binary conversion, for example, you can convert files to16Saved to the database in binary format, and you can also convert16Binary data converted to file and saved.

The code is as follows:

<?php
/**
 * PHP file and16Binary conversion
 * Date: 2017-01-14
 * Author: fdipzone
 * Ver: 1.0
 *
 * Func
 * fileToHex File conversion16Binary
 * hexToFile 16Binary to file
 */
/**
 * Convert file content to16Binary output
 * @param String $file File path
 * @return String
 */
function fileToHex($file){
 if(file_exists($file)){
 $data = file_get_contents($file);
 return bin2hex($data);
 }
 return '';
}
/**
 * Convert16Convert binary content to file
 * @param String $hexstr 16Binary content
 * @param String $file The path of the saved file
 */
function hexToFile($hexstr, $file){
 if($hexstr){
 $data = pack('H*', $hexstr);
 file_put_contents($file, $data, true);
 }
}
// Demonstration
$file = 'test.doc';
// File conversion16Binary
$hexstr = fileToHex($file);
echo 'File conversion16Binary<br>';
echo $hexstr.'<br><br>';
// 16Binary to file conversion
$newfile = 'new.doc';
hexToFile($hexstr, $newfile);
echo '16Binary to file<br>';
var_dump(file_exists($newfile));
?>

Output:

File conversion16Binary
efbbbf3130e4b8aae4bfafe58da7e69291e28094e280943235e4b8aae4bbb0e58da7e8b5b7...
16Binary to file conversion
boolean true

Summary

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