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This following lines causes 5mb memory consumption. It appears large to me.

if ( ! class_exists( 'SimplePie' ) ) include_once( ABSPATH . WPINC . '/class-feed.php' );        
new SimplePie();

I'm using php 5.2.4, WordPress 3.5.1.

With PHP 5.4.3, the memory usage with the above lines becomes 2.25mb.

I'd like to know a way to reduce it if there is a workaround.

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1 Answer

This is a known issue. It is caused by a bug in PHP 5.2 and is fixed in PHP 5.3.

You need to manually call the destructor method before unsetting the $feed and $item variables.

source

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