Class ‘Memcache’ not found (yes, i installed Memcache PHP PECL extension)

  • Winston

    (@anarchoi)


    2 years ago

    I already have Memcached installed and running
    https://prnt.sc/y21U-y5YvU-G

    But now I need to install the Memcache (not Memcached) PECL extension for PHP in order to use this plugin

    I tried this:
    yum install php74-php-pecl-memcache.x86_64

    It installed the PECL extension correctly, then I follow the instructions but as soon as I upload object-cache.php it breaks the site with this error in the logs:
    AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Error: Class 'Memcache' not found in /var/www/vhosts/domain.net/public_html/wp-content/object-cache.php:987\nStack trace:\n#0 /var/www/vhosts/domain.net/public_html/wp-content/object-cache.php(100): WP_Object_Cache->__construct()\n#1 /var/www/vhosts/domain.net/public_html/wp-includes/load.php(730): wp_cache_init()\n#2 /var/www/vhosts/domain.net/public_html/wp-settings.php(131): wp_start_object_cache()\n#3 /var/www/vhosts/domain.net/public_html/wp-config.php(105): require_once('/var/www/vhosts...')\n#4 /var/www/vhosts/domain.net/public_html/wp-load.php(50): require_once('/var/www/vhosts...')\n#5 /var/www/vhosts/domain.net/public_html/wp-blog-header.php(13): require_once('/var/www/vhosts...')\n#6 /var/www/vhosts/domain.net/public_html/index.php(17): require('/var/www/vhosts...')\n#7 {main}\n thrown in /var/www/vhosts/domain.net/public_html/wp-content/object-cache.php on line 987'

    According to what I found on google, Memcache not found error occurs when the extension is not installed/enabled

    So… what is the correct way to install the Memcache PECL extension for PHP 7.4 with CentOS 8 and Plesk Obsidian 18?`

Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Contributor Andrija Vu?ini?

    (@aidvu)

    Hey,

    that is correct. The message means it’s not loaded into PHP (doesn’t matter if installed or not).

    As for easiest way on CentOS, I think you can do it like this:

    yum install php-pear
pecl install memcache

    Not 100% sure, since I don’t have such a setup to test on.

    I had a similar error because I’d neglected to sudo apachectl restart

Viewing 2 replies - 1 through 2 (of 2 total)
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