How can the PHPIniDir directive in the HTTPD.conf file impact the functionality of PHP extensions?

The PHPIniDir directive in the HTTPD.conf file specifies the directory where PHP looks for its configuration file (php.ini). If this directive is not set correctly or is pointing to the wrong directory, PHP extensions may not load properly or may not function as expected. To solve this issue, ensure that the PHPIniDir directive in the HTTPD.conf file points to the correct directory where the php.ini file is located.

<IfModule php7_module>
    PHPIniDir /path/to/php.ini
</IfModule>