第七回闇PHP勉強会 (2016/12/11) 発表資料

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7. ❖ *.php
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8. <?php
require_once("/foo/bar/baz.php");
require_once("bar/baz.php");
require_once("baz.php");
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9. ❖ *.php
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10. switch (type) {
case ZEND_INCLUDE_ONCE:
case ZEND_REQUIRE_ONCE: {
zend_file_handle file_handle;
zend_string *resolved_path;
resolved_path = zend_resolve_path(Z_STRVAL_P(inc_filename),
(int)Z_STRLEN_P(inc_filename));
if (resolved_path) {
if (zend_hash_exists(&EG(included_files), resolved_path)) {
goto already_compiled;
}
Zend/zend_execute.c zend_include_or_eval()

11. switch (type) {
case ZEND_INCLUDE_ONCE:
case ZEND_REQUIRE_ONCE: {
zend_file_handle file_handle;
zend_string *resolved_path;
resolved_path = zend_resolve_path(Z_STRVAL_P(inc_filename),
(int)Z_STRLEN_P(inc_filename));
if (resolved_path) {
if (zend_hash_exists(&EG(included_files), resolved_path)) {
goto already_compiled;
}
Zend/zend_execute.c zend_include_or_eval()

12. ❖ *.php
❖ stat(2)
❖ stat
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$ pstree 35811
-+= 35811 hnw sapi/fpm/php-fpm
|--- 35812 hnw sapi/fpm/php-fpm
--- 35813 hnw sapi/fpm/php-fpm

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$ pstree 35811
-+= 35811 hnw sapi/fpm/php-fpm
|--- 35812 hnw sapi/fpm/php-fpm
--- 35813 hnw sapi/fpm/php-fpm

15. ❖ *.php
❖ stat(2)
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17. !"" current -> /var/www/my_app_name/releases/20150120114500/
!"" releases
# !"" 20150100093500
# !"" 20150110104000
# $"" 20150120114500
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18. ❖
❖ *.php
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19. ❖
*.php
❖ *.php
❖ *.php
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20. ❖ realpath_cache_ttl
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❖ *.php
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❖ realpath_cache_ttl=0

21. ❖
❖ *.php
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23. ❖
❖ *.php
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26. ❖ opcache.revalidate_path=0
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int main(int argc, char *argv[])
{
/* */
php_execute_script(&file_handle);
sapi/fpm/fpm/fpm_main.c sapi/apache2handler/sapi_apache2.c

28. typedef struct _zend_file_handle {
union {
int fd;
FILE *fp;
zend_stream stream;
} handle;
const char *filename;
zend_string *opened_path;
zend_stream_type type;
zend_bool free_filename;
} zend_file_handle;
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29. typedef struct _zend_file_handle {
union {
int fd;
FILE *fp;
zend_stream stream;
} handle;
const char *filename;
zend_string *opened_path;
zend_stream_type type;
zend_bool free_filename;
} zend_file_handle;
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30. ❖ php_execute_script()
file_handle->opened_path
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31. ❖ file_handle->opened_path
do_validate_timetamps()
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❖ opcache.validate_timestamps=1

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33. ❖ opcache.revalidate_path=0
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❖ opcache.revalidate_path=1
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36. fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
fastcgi_param DOCUMENT_ROOT $realpath_root;
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❖ $realpath_root
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❖ opcache.revalidate_path=0
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42. ❖ opcache.max_accelerated_files
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❖ opcache_get_status()

43. ❖ opcache.max_wasted_percentage
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45. ❖ opcache_invalidate($script)
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❖ opcache_reset()
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46. ❖
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❖ $realpath_root opcache_invalidate()
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47. ❖
❖ opcache.revalidate_path=1
❖ realpath_cache_ttl=5
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❖ opcache.revalidate_path=0
❖ opcache.validate_timestamps=0

48. ❖
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❖ opcache_reset()

51. <?php
define('ROOT_DIR', getcwd());
/* dirname(__FILE__) */
/* autoloader */
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