Static function caches that aren’t being cleaned in PHP 5.3.28?

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I’m using SimplePie with PHP 5.2.17 to parse my RSS feeds through the WordPress plugin feedwordpress. This works well and without problems if I make sure to use this patch to simplepie (in the file IRI.php).

However, if I change my PHP to use version 5.3.28 – the memory leak (or some other memory leak) starts and my site crashes. Any idea what might be causing it / how to solve it?

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(or in other words, is there a reason this patch should work in 5.2 and not in PHP 5.3?)

Thanks.

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  1. PHP 5.3 isn’t fully backward compatible with PHP 5.2,

    In your case, the use of the clearstatcache() is probably the cause of the memory leak.

    As you can see in the Migrating from PHP 5.2.x to PHP 5.3.x document:

    clearstatcache() no longer clears the realpath cache by default.

    This issue can be fixed by explicitly setting the $clear_realpath_cache parameter to true

    clearstatcache(true)