What is a CodeIgniter Library? 修正版

2022年12月30日 00:09 99コメント未選択

Frameworks always follow MVC pattern. Each MVC is packed with OOPs concept and their modules. These modules are nothing but the reusable block of codes which we use by simply importing in application instead of writing code again and again. In CodeIgniter this is the concept termed as CodeIgniter Library.

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Libraries are classes, we can use it by it’s objects and sometimes we use static methods directly.

In CodeIgniter 4 we have several libraries and/or services available as listed followings –

CURLRequest Class
Email Class
Encryption Service
Image Manipulation Class
Pagination
Session Library

and several libraries or services available in CodeIgniter 4 documentation. These all are created for their specific functionality. We can import their class and use their methods.

But in same cases we need to create a custom library or service according to the need of application. So, here we will see next, How can we create a CodeIgniter 4 Library ?

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*コメント* (99)

John

投稿日時 15:32, 06 Dec 返信する

Lorem Ipsum is simply dummy text of the printing and typesetting industry.

John

投稿日時 15:32h, 06 Dec 返信する

It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.

John

投稿日時 15:32, 06 Dec 返信する

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable.

John

投稿日時 15:32, 06 December 返信する

The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested.

*コメント*する

Array ( [database_group_name] => [tables] => Array ( [users] => users [groups] => groups [users_groups] => groups_link [login_attempts] => login_attempts ) [join] => Array ( [users] => user_id [groups] => group_id ) [hash_method] => bcrypt [bcrypt_default_cost] => 10 [argon2_default_params] => Array ( [memory_cost] => 65536 [time_cost] => 4 [threads] => 1 ) [site_title] => eclise.inc [admin_email] => noreply@eclise.me [default_group] => users [admin_group] => users [identity] => email [min_password_length] => 4 [email_activation] => 1 [manual_activation] => [remember_users] => 1 [user_expire] => 86500 [user_extend_on_login] => [track_login_attempts] => 1 [track_login_ip_address] => 1 [maximum_login_attempts] => 3 [lockout_time] => 600 [forgot_password_expiration] => 1800 [recheck_timer] => 0 [session_hash] => 6583d6c4f205998eclise251b68a2a2e44ea0006 [remember_cookie_name] => remember_code [use_ci_email] => 1 [email_config] => Array ( [mailtype] => html ) [email_templates] => auth/email/ [email_activate] => activate.tpl.php [email_forgot_password] => forgot_password.tpl.php [delimiters_source] => config [message_start_delimiter] => [message_end_delimiter] => [error_start_delimiter] => [error_end_delimiter] => )

Array ( [database_group_name] => [tables] => Array ( [users] => users_shop [groups] => groups [users_groups] => groups_link [login_attempts] => login_attempts ) [join] => Array ( [users] => user_id [groups] => group_id ) [hash_method] => bcrypt [bcrypt_default_cost] => 10 [argon2_default_params] => Array ( [memory_cost] => 65536 [time_cost] => 4 [threads] => 1 ) [site_title] => eclise.inc [admin_email] => info@eclise.jp [default_group] => users_shop [admin_group] => users_shop [identity] => email [min_password_length] => 8 [email_activation] => [manual_activation] => [remember_users] => 1 [user_expire] => 86500 [user_extend_on_login] => [track_login_attempts] => 1 [track_login_ip_address] => 1 [maximum_login_attempts] => 5 [lockout_time] => 600 [forgot_password_expiration] => 1800 [recheck_timer] => 0 [session_hash] => 6583d6c4f205998eclise251b68a2a2e44eashop [remember_cookie_name] => remember_code_shop [use_ci_email] => [email_config] => Array ( [mailtype] => html ) [email_templates] => shop/auth/email/ [email_activate] => activate.tpl.php [email_forgot_password] => forgot_password.tpl.php [delimiters_source] => config [message_start_delimiter] => [message_end_delimiter] => [error_start_delimiter] => [error_end_delimiter] => )

Array ( [database_group_name] => [tables] => Array ( [users] => users_adm [groups] => groups [users_groups] => groups_link [login_attempts] => login_attempts ) [join] => Array ( [users] => user_id [groups] => group_id ) [hash_method] => bcrypt [bcrypt_default_cost] => 10 [argon2_default_params] => Array ( [memory_cost] => 65536 [time_cost] => 4 [threads] => 1 ) [site_title] => eclise.inc [admin_email] => info@eclise.jp [default_group] => users_adm [admin_group] => users_adm [identity] => email [min_password_length] => 8 [email_activation] => [manual_activation] => [remember_users] => 1 [user_expire] => 0 [user_extend_on_login] => [track_login_attempts] => 1 [track_login_ip_address] => 1 [maximum_login_attempts] => 5 [lockout_time] => 600 [forgot_password_expiration] => 1800 [recheck_timer] => 0 [session_hash] => 6583d6c4f205998eclise251b68a2a2e44ea0adm [remember_cookie_name] => remember_code_adm [use_ci_email] => [email_config] => Array ( [mailtype] => html ) [email_templates] => adm/auth/email/ [email_activate] => activate.tpl.php [email_forgot_password] => forgot_password.tpl.php [delimiters_source] => config [message_start_delimiter] => [message_end_delimiter] => [error_start_delimiter] => [error_end_delimiter] => )

Loading Time: Base Classes	0.0004
Controller Execution Time ( News / Detail )	0.0083
Total Execution Time	0.0087

0.0005	SELECT * FROM `news` WHERE `id` = '1' AND `status` = 1 AND `datetime_start` <= '2025-11-05 04:33:44' AND `datetime_end` >= '2025-11-05 04:33:44'
0.0002	SELECT `name` FROM `selects_options` WHERE `id` = '1'
0.0003	SELECT `id`, CONCAT("news/detail/", id) AS url, `title`, `updated`, `file_1` FROM `news` WHERE `status` = 1 AND `datetime_start` <= '2025-11-05 04:33:44' AND `datetime_end` >= '2025-11-05 04:33:44' ORDER BY `updated` DESC LIMIT 5
0.0003	SELECT DATE_FORMAT(`updated`, "%Y年%m月") AS `year_month`, DATE_FORMAT(`updated`, "news/archive/%Y-%m") AS `link`, COUNT(*) AS `count` FROM `news` WHERE `status` = 1 AND `datetime_start` <= '2025-11-05 04:33:44' AND `datetime_end` >= '2025-11-05 04:33:44' GROUP BY `year_month` ORDER BY `year_month` DESC LIMIT 3
0.0003	SELECT `category`, COUNT(*) AS `count` FROM `news` WHERE `status` = 1 AND `datetime_start` <= '2025-11-05 04:33:44' AND `datetime_end` >= '2025-11-05 04:33:44' GROUP BY `category` ORDER BY `id` DESC LIMIT 10
0.0002	SELECT `name` FROM `selects_options` WHERE `id` = '125'
0.0002	SELECT `name` FROM `selects_options` WHERE `id` = '126'
0.0001	SELECT `name` FROM `selects_options` WHERE `id` = '32'
0.0001	SELECT `name` FROM `selects_options` WHERE `id` = '25'
0.0001	SELECT `name` FROM `selects_options` WHERE `id` = '2'
0.0002	SELECT `name` FROM `selects_options` WHERE `id` = '3'
0.0002	SELECT `name` FROM `selects_options` WHERE `id` = '1'

HTTP_ACCEPT	/
HTTP_USER_AGENT	Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTTP_CONNECTION
SERVER_PORT	80
SERVER_NAME	shampo.jp
REMOTE_ADDR	172.31.8.109
SERVER_SOFTWARE	Apache
HTTP_ACCEPT_LANGUAGE
SCRIPT_NAME	/index.php
REQUEST_METHOD	GET
HTTP_HOST
REMOTE_HOST
CONTENT_TYPE
SERVER_PROTOCOL	HTTP/1.1
QUERY_STRING
HTTP_ACCEPT_ENCODING	gzip, br, zstd, deflate
HTTP_X_FORWARDED_FOR	216.73.216.152
HTTP_DNT

base_url	https://shampo.jp/
index_page
uri_protocol	REQUEST_URI
url_suffix
language	japanese
charset	UTF-8
enable_hooks	1
subclass_prefix	MY_
composer_autoload
permitted_uri_chars	a-z 0-9~%.:_\-
enable_query_strings
controller_trigger	c
function_trigger	m
directory_trigger	d
log_threshold	0
log_path
log_filename
log_file_permissions	420
log_date_format	Y-m-d H:i:s
error_views_path
cache_path
cache_query_string
encryption_key
sess_driver	files
sess_cookie_name	ci_session
sess_samesite	Lax
sess_expiration	0
sess_save_path
sess_match_ip
sess_time_to_update	300
sess_regenerate_destroy
cookie_prefix
cookie_domain
cookie_path	/
cookie_secure
cookie_httponly
cookie_samesite	Lax
csrf_protection	1
csrf_token_name	csrf_test_name
csrf_cookie_name	csrf_cookie_name
csrf_expire	7200
csrf_regenerate
csrf_exclude_uris	Array ( )
compress_output
time_reference	local
proxy_ips
ems_site_name	shampo
login_first_page_administrator	adm/top
login_first_page_shop	shop/top
login_first_page
amazon_ses_key	AKIA2WGGAPEZHZ3MLLPJ
amazon_ses_secret	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
Image_lib	ImageMagick
Image_lib_path	/usr/bin
two_step_varification_google_authenticator_adm
two_step_varification_google_authenticator_service_name_adm	ems10
two_step_varification_google_authenticator_shop
two_step_varification_google_authenticator_service_name_shop	ems10
two_step_varification_google_authenticator
two_step_varification_google_authenticator_service_name	ems10
two_step_varification_mail_authenticator_adm	1
two_step_varification_mail_authenticator_shop	1
two_step_varification_mail_authenticator	1
shipping_cost	2000
shipping_free	1
shipping_free_total_price	3000
DEV_stripe_key_DEV	pk_test_51MgHF5GsAWqX82LFXpUveC7MHVMTgNTNgmnCSbrdVuiiQ68YsudCKEMpQ1mVqNB4kyqc8zTwajRG42jx8RzTAcnt00s8Y4E1Vw
DEV_stripe_secret_DEV	sk_test_51MgHF5GsAWqX82LFrCU1gQlVKLT1n3HEK0IN5Watf6ZZypqljr7O5faLKtZ7aoHc19UqHLb9Uj68CK2uNm7WgcEE00xzRTvSaX
stripe_key
stripe_secret
ion_auth	Array ( [database_group_name] => [tables] => Array ( [users] => users [groups] => groups [users_groups] => groups_link [login_attempts] => login_attempts ) [join] => Array ( [users] => user_id [groups] => group_id ) [hash_method] => bcrypt [bcrypt_default_cost] => 10 [argon2_default_params] => Array ( [memory_cost] => 65536 [time_cost] => 4 [threads] => 1 ) [site_title] => eclise.inc [admin_email] => noreply@eclise.me [default_group] => users [admin_group] => users [identity] => email [min_password_length] => 4 [email_activation] => 1 [manual_activation] => [remember_users] => 1 [user_expire] => 86500 [user_extend_on_login] => [track_login_attempts] => 1 [track_login_ip_address] => 1 [maximum_login_attempts] => 3 [lockout_time] => 600 [forgot_password_expiration] => 1800 [recheck_timer] => 0 [session_hash] => 6583d6c4f205998eclise251b68a2a2e44ea0006 [remember_cookie_name] => remember_code [use_ci_email] => 1 [email_config] => Array ( [mailtype] => html ) [email_templates] => auth/email/ [email_activate] => activate.tpl.php [email_forgot_password] => forgot_password.tpl.php [delimiters_source] => config [message_start_delimiter] => <p> [message_end_delimiter] => </p> [error_start_delimiter] => <p> [error_end_delimiter] => </p> )
ion_auth_shop	Array ( [database_group_name] => [tables] => Array ( [users] => users_shop [groups] => groups [users_groups] => groups_link [login_attempts] => login_attempts ) [join] => Array ( [users] => user_id [groups] => group_id ) [hash_method] => bcrypt [bcrypt_default_cost] => 10 [argon2_default_params] => Array ( [memory_cost] => 65536 [time_cost] => 4 [threads] => 1 ) [site_title] => eclise.inc [admin_email] => info@eclise.jp [default_group] => users_shop [admin_group] => users_shop [identity] => email [min_password_length] => 8 [email_activation] => [manual_activation] => [remember_users] => 1 [user_expire] => 86500 [user_extend_on_login] => [track_login_attempts] => 1 [track_login_ip_address] => 1 [maximum_login_attempts] => 5 [lockout_time] => 600 [forgot_password_expiration] => 1800 [recheck_timer] => 0 [session_hash] => 6583d6c4f205998eclise251b68a2a2e44eashop [remember_cookie_name] => remember_code_shop [use_ci_email] => [email_config] => Array ( [mailtype] => html ) [email_templates] => shop/auth/email/ [email_activate] => activate.tpl.php [email_forgot_password] => forgot_password.tpl.php [delimiters_source] => config [message_start_delimiter] => <p> [message_end_delimiter] => </p> [error_start_delimiter] => <p> [error_end_delimiter] => </p> )
ion_auth_adm	Array ( [database_group_name] => [tables] => Array ( [users] => users_adm [groups] => groups [users_groups] => groups_link [login_attempts] => login_attempts ) [join] => Array ( [users] => user_id [groups] => group_id ) [hash_method] => bcrypt [bcrypt_default_cost] => 10 [argon2_default_params] => Array ( [memory_cost] => 65536 [time_cost] => 4 [threads] => 1 ) [site_title] => eclise.inc [admin_email] => info@eclise.jp [default_group] => users_adm [admin_group] => users_adm [identity] => email [min_password_length] => 8 [email_activation] => [manual_activation] => [remember_users] => 1 [user_expire] => 0 [user_extend_on_login] => [track_login_attempts] => 1 [track_login_ip_address] => 1 [maximum_login_attempts] => 5 [lockout_time] => 600 [forgot_password_expiration] => 1800 [recheck_timer] => 0 [session_hash] => 6583d6c4f205998eclise251b68a2a2e44ea0adm [remember_cookie_name] => remember_code_adm [use_ci_email] => [email_config] => Array ( [mailtype] => html ) [email_templates] => adm/auth/email/ [email_activate] => activate.tpl.php [email_forgot_password] => forgot_password.tpl.php [delimiters_source] => config [message_start_delimiter] => <p> [message_end_delimiter] => </p> [error_start_delimiter] => <p> [error_end_delimiter] => </p> )

What is a CodeIgniter Library? 修正版

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