PHP 5.6 supportAlthough the TYPO3 CMS Team aims at eventually supporting PHP 5.6 with TYPO3 6.2 LTS, we are aware of in-depth issues with the reinstantiation of objects in Extbase. As such, we highly recommend to keep PHP 5.3 - 5.5 when running TYPO3 6.2 LTS for the time being.
Information regarding image handlingThe base data used for the checksum calculation of processed files have been changed. The checksum is used to identify changes, which require regeneration of processed files. Formerly the "GFX" section of the "TYPO3_CONF_VARS" was included in this base data, which caused weird problems in some cases. With TYPO3 CMS 6.2.13 this has been changed. In case you are adjusting "GFX" settings and you want processed files to be regenerated, you need to manually clean the existing processed files by using the Clean up utility in the Install Tool. Since the base data are different now, the Core would not recognize the existing processed files as valid files and would delete those and build a new version. In case you are having a large installation, you might want to avoid this costly operation. The Install Tool provides a dedicated Upgrade Wizard for you, which avoids the expensive regeneration of processed files by updating the checksum of all existing processed files.
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