PHP: Object-oriented code - Class 'x' not found, but there is

Question

I have problem with including CryptoGuard, but maybe there is my issue with object-oriented code, because I am newbie in that.

require_once('CryptoGuard.php'); // = https://github.com/CoreProc/crypto-guard/blob/master/src/CryptoGuard.php

$passphrase = 'my_private_key'; 
$cryptoGuard = new CryptoGuard($passphrase);
$stringToEncrypt = "private string";
$encryptedText = $cryptoGuard->encrypt($stringToEncrypt);
echo $encryptedText;

Easy usage of CryptoGuard example: https://github.com/CoreProc/crypto-guard (same as I used, but I do not use Composer so I just copied CryptoGuard.php).

There is no php error, but the part with cryptoGuard broke page (stop loading anymore things, no $encryptedText echo there).

Or maybe (for whatever reason) the result is just empty. Can you try echo '>' . $encryptedText . '<'; just to make sure whether or not that statement is executed? — MBaas
– MBaas, Commented Feb 24, 2015 at 16:19
Hi MBaas, thanks for your reply. No, the page freeze and do not load anything more. I tested and it load just content before "$cryptoGuard = new CryptoGuard($passphrase);", nothing after that. — JackDavis
– JackDavis, Commented Feb 24, 2015 at 16:36
What is var_dump($cryptoGuard->encrypt($stringToEncrypt));? and is error reporting set to error_reporting(E_ALL);? — Christian Gollhardt
– Christian Gollhardt, Commented Feb 24, 2015 at 16:39
Hello Christian, thanks for your reply. I set error_reporting(E_ALL); and I see the error: Fatal error: Class 'CryptoGuard' not found in code.php on line 44 (= $cryptoGuard = new CryptoGuard($passphrase);). So it looks that there is problem with object-oriented code as I thinked, but really dont know how to fix that, because require_once works. — JackDavis
– JackDavis, Commented Feb 24, 2015 at 16:56
To get sure if is CryptoGuard.php loaded correctly I added echo "loaded"; at the end of CryptoGuard.php file and it is really loaded correctly. Very strange, where can be problem please? — JackDavis
– JackDavis, Commented Feb 24, 2015 at 17:13

Christian Gollhardt · Accepted Answer · 2015-02-24 17:22:44Z

3

Your Problem is the Namespace. CryptoGuard uses Coreproc\CryptoGuard;

So your Code should be

require_once('CryptoGuard.php'); // = https://github.com/CoreProc/crypto-guard/blob/master/src/CryptoGuard.php

$passphrase = 'my_private_key';

//Not missing the Namespace here
$cryptoGuard = new \Coreproc\CryptoGuard\CryptoGuard($passphrase);
$stringToEncrypt = "private string";
$encryptedText = $cryptoGuard->encrypt($stringToEncrypt);
echo $encryptedText;

Alternative, your provided Code will work, if you write at the beginning of your script:

use \Coreproc\CryptoGuard\CryptoGuard;

answered Feb 24, 2015 at 17:22

Christian Gollhardt

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2 Comments

JackDavis Over a year ago

Thank you very much. I implemented object-oriented code first time, so I did not know what does "namespace" do. :)

Christian Gollhardt Over a year ago

No problem :) Everyone begins with something. Glad I can help. Namespaces and OOP are extremly powerfull, you should do more often something with it. And with a good IDE such like PHPStrom they make your development much faster.

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