When attempting to install the PostgreSQL extension for PHP, it is necessary to ensure that thepgsql extension is compatible with thetap code. Thephp -m command lists the basic extensions, includingpdo_pgsql andpgsql, which are already compiled into the kernel. However, when attempting to use thePDO driver, a WARNING message is displayed: WARNING: [pool www] child 69580 exited with code 124 after 795.206755 seconds from start. This issue may be experienced by others and requires further investigation and resolution.