sqlite3PagerReadFileheader 1578 ext/pdo_sqlite/sqlite/src/btree.c     rc = sqlite3PagerReadFileheader(pBt->pPager,sizeof(zDbHeader),zDbHeader);
sqlite3PagerReadFileheader   89 ext/pdo_sqlite/sqlite/src/pager.h int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);