Cache accelerator not detected: PHP 7.0 and SMF 2.0.14

[GL700Wing]

I have an SMF 2.0.14 forum and I've just changed from PHP 5.6 to PHP 7.0.

With PHP 5.6 I enabled the APC accelerator extension via the cPanel and confirmed that SMF was able to detect it (the message 'SMF has detected that your server has APC installed.' was displayed when I checked the cache settings).

Since switching to PHP 7.0 the message 'SMF has not been able to detect a compatible accelerator on your server.' is displayed when I check the cache settings even though I have enabled the APC accelerator extension via the cPanel.. I've also get the same message when I enable the memcached extension via cPanel.

Is there something else I need to configure either via cPanel or within SMF to enable caching with PHP 7.0?

[GL700Wing]

I've just confirmed that SMF 2.1 Beta 3 is able to detect cache accelerators for both PHP 7.0 and PHP 7.1 on the same host where my SMF 2.0.14 forum is installed so it seems this is a bug/oversight for SMF 2.0.14.

[GL700Wing]

Using information I found in SMF 2.1 Beta 3 I have been able to get SMF 2.0.14 to recognise and use the APCu accelerator in PHP 7.0/7.1 by making the following code changes:

In ./Sources/Load.php
Find:

Code Select Expand

// Alternative PHP Cache, ahoy!
elseif (function_exists('apc_store'))
{
// An extended key is needed to counteract a bug in APC.
if ($value === null)
apc_delete($key . 'smf');
else
apc_store($key . 'smf', $value, $ttl);
}
Add After:

Code Select Expand

elseif (function_exists('apcu_store'))
{
// An extended key is needed to counteract a bug in APC.
if ($value === null)
apcu_delete($key . 'smf');
else
apcu_store($key . 'smf', $value, $ttl);
}

Find:

Code Select Expand

if (function_exists('apc_delete_file'))
@apc_delete_file($cachedir . '/data_' . $key . '.php');
Add After

Code Select Expand


if (function_exists('apcu_delete_file'))
@apcu_delete_file($cachedir . '/data_' . $key . '.php');

Find:

Code Select Expand

// This is the free APC from PECL.
elseif (function_exists('apc_fetch'))
$value = apc_fetch($key . 'smf');
Add After:

Code Select Expand

// This is the free APCu from PECL.
elseif (function_exists('apcu_fetch'))
$value = apcu_fetch($key . 'smf');

In ./Sources/ManageServer.php
Find:

Code Select Expand

elseif (function_exists('apc_store'))
$detected = 'APC';
Add After:

Code Select Expand

elseif (function_exists('apcu_store'))
$detected = 'APCu';


In ./Themes/default/languages/ManageSettings.english.php
Find:

Code Select Expand

<li>APC</li>
Add After:

Code Select Expand

<li>APCu</li>

Find:

Code Select Expand

$txt['detected_APC'] = '<strong style="color: green">SMF has detected that your server has APC installed.</strong>';
Add After:

Code Select Expand

$txt['detected_APCu'] = '<strong style="color: green">SMF has detected that your server has APCu installed.</strong>';

[Fisch.666]

You can at least use APCu with PHP 7.0 on SMF 2.0.14 with the following package:

https://packages.debian.org/stretch/php-apcu-bc
https://pecl.php.net/package/apcu_bc

and SMF is detecting and using APCu without such code changes:

SMF has detected that your server has APC installed.

Using https://github.com/krakjoe/apcu/blob/master/apc.php confirms that APCu is utilized by SMF.

[GL700Wing]

You can at least use APCu with PHP 7.0 on SMF 2.0.14 with the following package:

https://packages.debian.org/stretch/php-apcu-bc
https://pecl.php.net/package/apcu_bc

and SMF is detecting and using APCu without such code changes:

SMF has detected that your server has APC installed.

Using https://github.com/krakjoe/apcu/blob/master/apc.php confirms that APCu is utilized by SMF.

Thanks for this information - I'm using shared hosting so I'll have to find out if the provider is willing to install the backwards compatibility package.

However, given that an SMF 2.1 Beta 3 forum installed on the same domain using the same version of PHP can detect a number accelerators, it'd be great if the upcoming SMF 2.0.15 update had the support for accelerators that SMF 2.1 Beta 3  has.