Unable to install a module using PECL.
When attempting to install a module, PECL will fail with the following error:
ERROR: failed to run `phpize'
Check to see if the function 'popen' is listed within the respective PHP versions "Disabled Functions":
# grep disable_functions /opt/cpanel/ea-php*/root/etc/php.ini
If 'popen' is listed, it should be removed as this function is required for PECL to install PHP modules.