TYPO3 Core

The cache_core files ext_tables_[ident].php and ext_localconf_[ident].php are read for each frontend and backend request. So it makes sense to optimise them where possible.

• Reduce calls to defined // if (!defined('TYPO3_MODE')
• Resolve extPath once for each extension when generating cache files
• Resolve extRelPath once for each extension when generating cache files
• Resolve extPath once for each extension when generating cache files
• Replace $_EXTKEY with actual extensionKey string
• Only add the $_EXTCONF line if '$_EXTCONF' was found in the content
• Only add the loadNewTcaColumnsConfigFiles() line if the string 'TCA' was found in the content

• Reduce calls to addToAllTCAtypes() and friends. This may be hard because unlike string replacements, these calls may reside inside of if statements checking for versionCompat etc.