sending SMS from the PHP script<\/a>. In the example code, we will use SMS gateway API to send OTP SMS using PHP.<\/p>\nIn this example mobile number verification script, we will implement the following functionality to verify phone numbers via OTP SMS using PHP<\/b>.<\/p>\n\n- Generate a random 6 digits verification code with PHP.<\/li>\n
- Send OTP to the user’s mobile no via SMS gateway API and insert it in the database.<\/li>\n
- Verify the OTP code and update the status in the database.<\/li>\n
- Display the verification status to the user.<\/li>\n<\/ul>\n
Create Database Table<\/h2>\n
To store the OTP code and verification status a table is required in the database. The following SQL creates a mobile_otps<\/code> table with some basic columns in the MySQL database.<\/p>\nCREATE<\/span> TABLE<\/span> `mobile_otps`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `mobile_number`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `verification_code`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `verified`<\/span> tinyint(1<\/span>) NOT<\/span> NULL<\/span> DEFAULT<\/span> 0<\/span> COMMENT<\/span> '1=Verified, 0=Not verified'<\/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>\nSMS Gateway API<\/h2>\n
Before getting started, you need to select an SMS gateway service provider that is suitable for your target country. Once you purchase an SMS gateway API plan, the API details will be available from the respective provider.<\/p>\n
Collect the API credentials to later use in the script.<\/p>\n
\n- API URL<\/li>\n
- API Key<\/li>\n<\/ul>\n
Configuration File (config.php)<\/h2>\n
In the config.php<\/code> file, the API and database configuration variables are defined.
\nSMS Gateway API Settings:<\/b><\/p>\n\n- API_URL – API endpoint URL<\/li>\n
- API_KEY – API Key<\/li>\n
- SENDER_ID – Sender name or ID<\/li>\n
- COUNTRY_CODE – Country code of the recipient’s phone no.<\/li>\n<\/ul>\n
Database Settings:<\/b><\/p>\n\n- DB_HOST – Datebase hostname<\/li>\n
- DB_USERNAME – Datebase username<\/li>\n
- DB_PASSWORD – Database password<\/li>\n
- DB_NAME – Database name<\/li>\n<\/ul>\n
<?php
<\/span>\/\/ SMS gateway API credentials
<\/span>define<\/span>(<\/span>'API_URL'<\/span>, <\/span>'https:\/\/api.example.com\/sendsms'<\/span>);
<\/span>define<\/span>(<\/span>'API_KEY'<\/span>, <\/span>'Your_API_Key'<\/span>);
<\/span>define<\/span>(<\/span>'SENDER_ID'<\/span>, <\/span>'CODEXW'<\/span>);
<\/span>define<\/span>(<\/span>'COUNTRY_CODE'<\/span>, <\/span>1<\/span>); <\/span>\/\/1=United States
\/\/ Database configuration
<\/span>define<\/span>(<\/span>'DB_HOST'<\/span>, <\/span>'MySQL_Database_Host'<\/span>);
<\/span>define<\/span>(<\/span>'DB_USERNAME'<\/span>, <\/span>'MySQL_Database_Username'<\/span>);
<\/span>define<\/span>(<\/span>'DB_PASSWORD'<\/span>, <\/span>'MySQL_Database_Password'<\/span>);
<\/span>define<\/span>(<\/span>'DB_NAME'<\/span>, <\/span>'MySQL_Database_Name'<\/span>);<\/span><\/pre>\nNote that:<\/span> You will get the API credentials from the SMS gateway service provider.<\/p>\nDatabase Class (DB.class.php)<\/h2>\n
The DB class handles all the database related operations (fetch, insert, and update) using PHP and MySQL.<\/p>\n
The following functions are used to fetch, insert and update OTP data in the database.<\/p>\n
\n- __construct()<\/b> – Connect and select the database.<\/li>\n
- checkRow()<\/b> – Check whether any record exists in the mobile_otps table based on the specific conditions. Returns TRUE if exists, otherwise FALSE.<\/li>\n
- insert()<\/b> – Insert data in the mobile_otps table of the database.<\/li>\n
- update()<\/b> – Update data based on the conditions in the mobile_otps table of the database.<\/li>\n<\/ul>\n
<?php
<\/span>\/*
* DB Class
* This class is used for database related (connect, insert, and update) operations
* @author CodexWorld.com
* @url http:\/\/www.codexworld.com
* @license http:\/\/www.codexworld.com\/license
*\/
<\/span>require_once <\/span>'config.php'<\/span>;
class <\/span>DB<\/span>{
private <\/span>$dbHost <\/span>= <\/span>DB_HOST<\/span>;
private <\/span>$dbUsername <\/span>= <\/span>DB_USERNAME<\/span>;
private <\/span>$dbPassword <\/span>= <\/span>DB_PASSWORD<\/span>;
private <\/span>$dbName <\/span>= <\/span>DB_NAME<\/span>;
private <\/span>$tblName <\/span>= <\/span>\"mobile_otps\"<\/span>;
public function <\/span>__construct<\/span>(){
if(!isset(<\/span>$this<\/span>-><\/span>db<\/span>)){
<\/span>\/\/ Connect to the database
<\/span>$conn <\/span>= new <\/span>mysqli<\/span>(<\/span>$this<\/span>-><\/span>dbHost<\/span>, <\/span>$this<\/span>-><\/span>dbUsername<\/span>, <\/span>$this<\/span>-><\/span>dbPassword<\/span>, <\/span>$this<\/span>-><\/span>dbName<\/span>);
if(<\/span>$conn<\/span>-><\/span>connect_error<\/span>){
die(<\/span>\"Failed to connect with MySQL: \" <\/span>. <\/span>$conn<\/span>-><\/span>connect_error<\/span>);
}else{
<\/span>$this<\/span>-><\/span>db <\/span>= <\/span>$conn<\/span>;
}
}
}
<\/span>\/*
* Returns rows from the database based on the conditions
* @param string name of the table
* @param array select, where, order_by, limit and return_type conditions
*\/
<\/span>public function <\/span>checkRow<\/span>(<\/span>$conditions <\/span>= array()){
<\/span>$sql <\/span>= <\/span>'SELECT * FROM '<\/span>.<\/span>$this<\/span>-><\/span>tblName<\/span>;
if(!empty(<\/span>$conditions<\/span>)&& <\/span>is_array<\/span>(<\/span>$conditions<\/span>)){
<\/span>$sql <\/span>.= <\/span>' WHERE '<\/span>;
<\/span>$i <\/span>= <\/span>0<\/span>;
foreach(<\/span>$conditions <\/span>as <\/span>$key <\/span>=> <\/span>$value<\/span>){
<\/span>$pre <\/span>= (<\/span>$i <\/span>> <\/span>0<\/span>)?<\/span>' AND '<\/span>:<\/span>''<\/span>;
<\/span>$sql <\/span>.= <\/span>$pre<\/span>.<\/span>$key<\/span>.<\/span>\" = '\"<\/span>.<\/span>$value<\/span>.<\/span>\"'\"<\/span>;
<\/span>$i<\/span>++;
}
}
<\/span>$result <\/span>= <\/span>$this<\/span>-><\/span>db<\/span>-><\/span>query<\/span>