SMART_STR_PREALLOC   83 ext/curl/interface.c #define SMART_STR_PREALLOC 4096
SMART_STR_PREALLOC  541 ext/mysqlnd/mysqlnd_alloc.c #define SMART_STR_PREALLOC 512
SMART_STR_PREALLOC   33 ext/pgsql/pgsql.c #define SMART_STR_PREALLOC 512
SMART_STR_PREALLOC   38 ext/standard/php_smart_str.h #define SMART_STR_PREALLOC 128