如何基地64加密和基地64解密PHP中的图像文件？

Question

我有一个名为文件上传的表单域，在这里我移动了一个tmp_folder，之后我存储在数据库中，从这里工作正常，但我的要求是我不想在tmp_folder中移动，我想要加密文件名并直接插入数据库，我想我想使用base64加密，但我不知道如何使用？

<?php 
 
$userid = $_POST['userid'];// here i got userid 
 
$filename = basename($_FILES['file']['name']);//here i got filename 
 
$extension = pathinfo($filename, PATHINFO_EXTENSION); 
 
$new_name= md5($filename.time()).'.'.$extension; 
 
$approved = 0; 
 
$approved_on = date('Y-m-d H:i:s'); 
 
$updated_on = date('Y-m-d H:i:s'); 
 
$status = 0; 
 
if (!empty($new_name)) { 
 
\t // FILE TYPE CHECKING 
 
\t $allowed = array('gif','png' ,'jpg'); 
 
\t if(!in_array($extension,$allowed)) { 
 
\t \t $horoscope = array("message" => "filetype error"); 
 
\t \t echo json_encode($horoscope); 
 
\t } 
 
\t else{ 
 
\t if($_FILES['file']['size']>4459681){ 
 
\t \t $horoscope = array("message" => "filesize error"); 
 
\t \t echo json_encode($horoscope); 
 
\t } 
 
\t else{ 
 
\t \t //echo "filesize(success)"; 
 
\t \t $sql=mysql_query("SELECT id_proof FROM user_details WHERE user_id='$userid'"); 
 
\t \t $count = mysql_num_rows($sql); 
 
\t \t if($count != 0){ 
 
\t \t \t $filemove = array("filemove" => move_uploaded_file($_FILES['file']['tmp_name'], "horoscope/".$new_name)); 
 
\t \t \t $sql=mysql_query("UPDATE user_details SET id_proof='$new_name',updated_on='$updated_on' WHERE user_id='$userid'"); 
 
\t \t \t if($sql){ 
 
\t \t \t $horoscope = array("message" => "update success"); 
 
\t \t \t }else{ 
 
\t \t \t $horoscope = array("message" => "update error"); 
 
\t \t \t } 
 
\t \t \t echo json_encode($horoscope); 
 
\t \t }else{ 
 
\t \t \t $filemove = array("filemove" => move_uploaded_file($_FILES['file']['tmp_name'], "horoscope/".$new_name)); 
 
\t \t \t $sql = mysql_query("INSERT INTO user_details (user_id,horoscope,approved,approved_on,status) VALUES ('$userid','$new_name','$approved','$approved_on','$status')"); 
 
\t \t \t if($sql){ 
 
\t \t \t $horoscope = array("message" => "successully insert"); 
 
\t \t \t }else{ 
 
\t \t \t $horoscope = array("message" => "insert error"); 
 
\t \t \t } 
 
\t \t \t echo json_encode($horoscope); 
 
\t \t } 
 
\t } 
 
\t } 
 
}else{ 
 
\t //echo "Error"; 
 
\t $horoscope = array("message" => "file is not moving"); 
 
\t echo json_encode($horoscope); 
 
} \t 
 
?>

Answer 1

$filename = $_FILES['file']['image'] 
$destinationPath = 'upload path'; 
move_uploaded_file($destinationPath, $fileName); 

< ----- -----编码>

$im = file_get_contents(file path with filename); 
$imdata = base64_encode($im); 

可以存储到数据库的图像数据 - > $ IMDATA
< - ---- /编码----->

< ----- -----解码>

$ifp = fopen($output_file_path_with_filename, "wb"); 
$$imdata = $base64_string; // $base64_string; from your database. 
fwrite($ifp, base64_decode($imdata)); 
fclose($ifp); 

< ----- /解码----->