Moodle 4.4 or later requires at least PHP 8.1 (currently using version 8.0.30).
Some servers may have multiple PHP versions installed, are you using the correct executable?
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'mysql.so' (tried: /opt/alt/php80/usr/lib64/php/modules/mysql.so (/opt/alt/php80/usr/lib64/php/modules/mysql.so: cannot open shared object file: No such file or directory), /opt/alt/php80/usr/lib64/php/modules/mysql.so.so (/opt/alt/php80/usr/lib64/php/modules/mysql.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'json.so' (tried: /opt/alt/php80/usr/lib64/php/modules/json.so (/opt/alt/php80/usr/lib64/php/modules/json.so: cannot open shared object file: No such file or directory), /opt/alt/php80/usr/lib64/php/modules/json.so.so (/opt/alt/php80/usr/lib64/php/modules/json.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'nd_mysqli.so' (tried: /opt/alt/php80/usr/lib64/php/modules/nd_mysqli.so (/opt/alt/php80/usr/lib64/php/modules/nd_mysqli.so: undefined symbol: mysqlnd_global_stats), /opt/alt/php80/usr/lib64/php/modules/nd_mysqli.so.so (/opt/alt/php80/usr/lib64/php/modules/nd_mysqli.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'xml.so' (tried: /opt/alt/php80/usr/lib64/php/modules/xml.so (/opt/alt/php80/usr/lib64/php/modules/xml.so: cannot open shared object file: No such file or directory), /opt/alt/php80/usr/lib64/php/modules/xml.so.so (/opt/alt/php80/usr/lib64/php/modules/xml.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'xmlreader.so' (tried: /opt/alt/php80/usr/lib64/php/modules/xmlreader.so (/opt/alt/php80/usr/lib64/php/modules/xmlreader.so: undefined symbol: dom_node_class_entry), /opt/alt/php80/usr/lib64/php/modules/xmlreader.so.so (/opt/alt/php80/usr/lib64/php/modules/xmlreader.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  Module "mcrypt" is already loaded in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'memcached.so' (tried: /opt/alt/php80/usr/lib64/php/modules/memcached.so (/opt/alt/php80/usr/lib64/php/modules/memcached.so: undefined symbol: igbinary_serialize), /opt/alt/php80/usr/lib64/php/modules/memcached.so.so (/opt/alt/php80/usr/lib64/php/modules/memcached.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  Module "intl" is already loaded in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  Module "fileinfo" is already loaded in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Unable to load dynamic library 'ioncube.so' (tried: /opt/alt/php80/usr/lib64/php/modules/ioncube.so (/opt/alt/php80/usr/lib64/php/modules/ioncube.so: cannot open shared object file: No such file or directory), /opt/alt/php80/usr/lib64/php/modules/ioncube.so.so (/opt/alt/php80/usr/lib64/php/modules/ioncube.so.so: cannot open shared object file: No such file or directory)) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  PHP Startup: Invalid library (appears to be a Zend Extension, try loading using zend_extension=opcache.so from php.ini) in <b>Unknown</b> on line <b>0</b><br />
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<b>Warning</b>:  Module "mysqli" is already loaded in <b>Unknown</b> on line <b>0</b><br />