How can PHP developers ensure email security and prevent email injection attacks when validating email addresses?

Email security and preventing email injection attacks can be achieved by using PHP's built-in filter_var function with the FILTER_VALIDATE_EMAIL filter to validate email addresses. This function will ensure that the input is a valid email address and prevent any malicious code injection. 

$email = $_POST['email'];

if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
    // Valid email address, proceed with further processing
} else {
    // Invalid email address, handle error accordingly
}

Keywords

PHP email security email injection attacks validation filter_var

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