将我的PHP版本从5.2.3升级到5.5.9

Question

I want to upgrade my PHP version from 5.2.3 to 5.5.9. I want to know what are the major problems involved with the functionality after upgradation . My PHP is running in WAMP server.

Thanks in advance

Answer 1

The short answer is that yes, your code could break so you should test it.

Here's the list of Backward Incompatible Changes from PHP 5.2 to 5.3

And here's the list of Backward Incompatible Changes from PHP 5.3 to 5.4

And here's the list of Backward Incompatible Changes from PHP 5.4 to 5.5

Read each of these and see if you're using any of those functions in the ways described.