Don't send warning php to mail server

A common issue!

When you send an email using PHP, it can sometimes trigger a warning message to be sent to the mail server, which can be annoying and unnecessary. Here are a few ways to prevent PHP from sending warning messages to the mail server:

Use the @ symbol: You can use the @ symbol to suppress warnings and errors when sending an email using PHP. For example:
```
@mail($to, $subject, $message);
```
This will send the email and suppress any warnings or errors that might occur.
Use the error_reporting function: You can use the error_reporting function to disable error reporting for the specific script that sends the email. For example:
```
error_reporting(0);
@mail($to, $subject, $message);
```
This will disable error reporting for the script, so any warnings or errors will not be sent to the mail server.
Use a try-catch block: You can use a try-catch block to catch any exceptions that might occur when sending the email, and then suppress the warning message. For example:
```
try {
 mail($to, $subject, $message);
} catch (Exception $e) {
 // Suppress the warning message
}
```
Configure your PHP settings: You can also configure your PHP settings to disable warning messages for the mail function. You can do this by adding the following lines to your php.ini file:
```
mail.log = 0
mail.error_log = 0
```
This will disable logging of mail errors and warnings.
Use a third-party library: If you're using a third-party library to send emails, such as PHPMailer, you can configure the library to suppress warning messages. For example, you can set the SMTPDebug option to 0 to disable debug output.

Remember that suppressing warning messages can make it more difficult to debug issues with your email sending code. It's generally a good idea to keep error reporting enabled and use try-catch blocks to catch and handle any exceptions that might occur.

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Don't send warning php to mail server