![\"codeigniter-google-api-console-oauth-client-id-secret-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2015\/12\/codeigniter-google-api-console-oauth-client-id-secret-codexworld.png\")
<\/div>\n
Before getting started to Google login integration process, take a look at the files structure of Login with Google in CodeIgniter<\/b>.<\/p>\ncodeigniter_google_login\/<\/span>\r\n\u251c\u2500\u2500 application\/<\/span>\r\n\u2502 \u251c\u2500\u2500 config\/<\/span>\r\n\u2502 \u2502 \u2514\u2500\u2500 google.php\r\n\u2502 \u251c\u2500\u2500 controllers\/<\/span>\r\n\u2502 \u2502 \u2514\u2500\u2500 User_authentication.php\r\n\u2502 \u251c\u2500\u2500 libraries\/<\/span>\r\n\u2502 \u2502 \u2514\u2500\u2500 Google.php\r\n\u2502 \u251c\u2500\u2500 models\/<\/span>\r\n\u2502 \u2502 \u2514\u2500\u2500 User.php\r\n\u2502 \u251c\u2500\u2500 third_party\/<\/span>\r\n\u2502 \u2502 \u2514\u2500\u2500 google-api-client\/<\/span>\r\n\u2502 \u251c\u2500\u2500 views\/<\/span>\r\n\u2502 \u2502 \u251c\u2500\u2500 user_authentication\/<\/span>\r\n\u2502 \u2502 \u2502 \u251c\u2500\u2500 index.php\r\n\u2502 \u2502 \u2502 \u2514\u2500\u2500 profile.php\r\n\u2514\u2500\u2500 assets\/<\/span>\r\n \u251c\u2500\u2500 css\/<\/span>\r\n \u2514\u2500\u2500 images\/<\/span>\r\n<\/pre>\nCreate Database Table<\/h2>\n
To store the Google account information, a table needs to be created in the database. The following SQL creates a users<\/code> table with some basic fields in the MySQL database.<\/p>\nCREATE<\/span> TABLE<\/span> `users`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `oauth_provider`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `oauth_uid`<\/span> varchar<\/span>(50<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `first_name`<\/span> varchar<\/span>(25<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `last_name`<\/span> varchar<\/span>(25<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `email`<\/span> varchar<\/span>(50<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `gender`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci DEFAULT<\/span> NULL<\/span>,\r\n `locale`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci DEFAULT<\/span> NULL<\/span>,\r\n `picture`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci DEFAULT<\/span> NULL<\/span>,\r\n `link`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `created`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `modified`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>)\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\nConfig (application\/config\/)<\/h2>\n
autoload.php<\/code><\/b>
\nSpecify the commonly used library (database and session) or helper (url) to load by default.<\/p>\n$autoload<\/span>[<\/span>'libraries'<\/span>] = array(<\/span>'database'<\/span>, <\/span>'session'<\/span>);\r\n\r\n<\/span>$autoload<\/span>[<\/span>'helper'<\/span>] = array(<\/span>'url'<\/span>);<\/span><\/pre>\ngoogle.php<\/code><\/b>
\nGoogle API configuration variables are defined in this file. Specify the Client ID, Client Secret and Redirect URL according to the API credentials of your Google API Console Project.<\/p>\n<?php\r\ndefined<\/span>(<\/span>'BASEPATH'<\/span>) OR exit(<\/span>'No direct script access allowed'<\/span>);\r\n\r\n<\/span>\/*\r\n| -------------------------------------------------------------------\r\n| Google API Configuration\r\n| -------------------------------------------------------------------\r\n| \r\n| To get API details you have to create a Google Project\r\n| at Google API Console (https:\/\/console.developers.google.com)\r\n| \r\n| client_id string Your Google API Client ID.\r\n| client_secret string Your Google API Client secret.\r\n| redirect_uri string URL to redirect back to after login.\r\n| application_name string Your Google application name.\r\n| api_key string Developer key.\r\n| scopes string Specify scopes\r\n*\/\r\n<\/span>$config<\/span>[<\/span>'google'<\/span>][<\/span>'client_id'<\/span>] = <\/span>'Google_API_Client_ID'<\/span>;\r\n<\/span>$config<\/span>[<\/span>'google'<\/span>][<\/span>'client_secret'<\/span>] = <\/span>'Google_API_Client_Secret'<\/span>;\r\n<\/span>$config<\/span>[<\/span>'google'<\/span>][<\/span>'redirect_uri'<\/span>] = <\/span>'https:\/\/example.com\/project_folder_name\/user_authentication\/'<\/span>;\r\n<\/span>$config<\/span>[<\/span>'google'<\/span>][<\/span>'application_name'<\/span>] = <\/span>'Login to CodexWorld.com'<\/span>;\r\n<\/span>$config<\/span>[<\/span>'google'<\/span>][<\/span>'api_key'<\/span>] = <\/span>''<\/span>;\r\n<\/span>$config<\/span>[<\/span>'google'<\/span>][<\/span>'scopes'<\/span>] = array();<\/span><\/pre>\nNote that:<\/span> You’ll find the Client ID and Client Secret at your Google API Console Project. (Go to the Google API Credentials page \u00bb<\/b> Click on OAuth Client ID for Web application \u00bb<\/b> Copy the Client ID and Client secret \u00bb<\/b> Replace the client_id value with Client ID and client_secret value with Client secret)<\/p>\nThird Party (application\/third_party\/)<\/h2>\n
google-api-client\/<\/code><\/b>
\nGoogle API PHP client<\/b> is used to connect and authenticate with Google OAuth API. The google-api-client library needs to be placed in the third_party\/<\/b> directory of your CodeIgniter application.<\/p>\nNote that:<\/span> You don’t need to download the Google API PHP client library separately, all the required files are included in the source code.<\/p>\nLibraries (application\/libraries\/)<\/h2>\n
Google.php<\/code><\/b>
\nThe Google OAuth library helps to integrate Google API client in CodeIgniter 3.x application. You can easily add the login with Google functionality to the CodeIgniter application using Google API PHP client library.<\/p>\nNote that:<\/span> You don’t need to download it separately, the Google library file is included in the source code.<\/p>\nControllers (application\/controllers\/)<\/h2>\n
User_authentication.php<\/code><\/b>
\nThe User_Authentication controller handles the authentication, Sign-in, and Sign out process with Google account.<\/p>\n\n- __construct()<\/b> \u2013 The Google library and User model are loaded in this method.<\/li>\n
- index()<\/b> \u2013 This function handles the authentication functionality with Google account.
\nIf the user authenticated with Google, the following happens:<\/p>\n