What common issues can arise when installing PHP with Apache on different machines?

One common issue that can arise when installing PHP with Apache on different machines is the PHP module not being properly loaded by Apache. This can be solved by ensuring that the PHP module is enabled in the Apache configuration file. Another issue could be related to file permissions, where PHP scripts may not have the necessary permissions to execute. This can be resolved by adjusting the file permissions accordingly.

# Ensure PHP module is enabled in Apache configuration file
LoadModule php_module modules/libphp.so

# Adjust file permissions for PHP scripts to execute
chmod 755 your_php_script.php