Is PHP version 5 worth installing even if the online version is PHP 4?

If the online version is PHP 4, it may not be worth installing PHP version 5 as it could potentially cause compatibility issues with the existing codebase. It's recommended to stick with the same PHP version that the online platform is using to ensure smooth operation and avoid any conflicts. 

// Stick with PHP version 4 if the online platform is using PHP 4

Keywords

PHP version 5 PHP version 4 compatibility upgrade deprecated

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