How did PHP 5.3 break your application? [closed]

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PHP 5.3 has been released some time ago and the developers tried to keep the number of back开发者_如何学JAVAwards compatibility breaks low. What issues did you find while testing/migrating your code with PHP 5.3?

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I don't know about you, but I found all of these things I had to fix. :P

Migrating from PHP 5.2.x to PHP 5.3.x

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Using CakePHP 1.2 it causes a lot of deprecated notices in debug mode. Upgrading to latest CakePHP version fix it.

Beside the deprecated notices, I did not find any major issue.