Magento has announced that they added support for PHP 5.4.
PHP 5.4 offers some advantages, including better performance, more efficient memory usage, and access to ongoing updates and security fixes.
To ensure that you can take advantage of these valuable updates faster, Magento has released patches for Magento Enterprise Edition 126.96.36.199 and later releases and for Magento Community Edition 188.8.131.52 and later releases. Support for PHP 5.4 will also be built in to future Magento product releases.
The Magento Enterprise Edition patches are posted in the Support Patches section of My Account and the Magento Community Edition patches are available on the Community Edition download page. More information on applying patches is available in the MagentoKnowledge Base. If you are unable to upgrade to PHP 5.4, PHP suggests you upgrade to 5.3.28 as the latest version in the 5.3.x product line that includes security fixes.
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