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Validate email id12/16/2023 Store a valid email first and store an invalid one in the second. We can use the ternary operator to check the validity of the email along with the function.įor example, create two variables, $email_first and $email_secon, and store two email addresses in those variables. The preg_match() function takes two parameters where the first one is the regular expression, and the second one is the email to be checked. We can create a regular expression ourselves and define the rules for a valid email. This method uses the regular expression for the validation rule of the email. We can use the preg_match() function to validate the email address in PHP. Use the preg_match() Function to Validate the Email According to the Regular Expression The function first removes these characters from the email and then validates the email. The email address provided in the example contains illegal characters such as () and //. Similarly, display the messages.Īn email address with an illegal character is taken in the example below, and the filter_var() function filters those characters and sanitizes the provided email. This time, use the FILTER_VALIDATE_EMAIL email as the filter name in the function. Then, apply the if-else statement as in the first method. Store the function on the same $email variable. Use the filter_var() function on the variable and use FILTER_SANITIZE_EMAIL id as the second parameter. Store the email as a string in the variable. For this, we can follow the first method using the FILTER_VALIDATE_EMAIL filter name id.įor example, create a variable $email and store an email address with illegal characters in it. We can again use the function to check for the validity of the email address after the sanitization. The function returns the sanitized email. The filter name id is the second argument in the filter_var() function, where the email address is the first argument. We can use the additional FILTER_SANITIZE_EMAIL filter name id in the first method to remove all the illegal characters from an email address. Use the FILTER_VALIDATE_EMAIL, FILTER_SANITIZE_EMAIL and filter_var() Functions to Validate the Email in PHP The second email address is invalid as it contains numbers in the top-level domain. The first invocation passes a valid email address and the second address passes an invalid email. The function in the example below gets invoked two times. We can assume that the email address provided in the example is accessed from a form using the $_POST variable. In the first function call supply the argument, and the second call. Outside the function, call the function two times. In the if block, display the message saying the email is valid, and in the else condition, display that email is invalid. Apply the if-else condition on the filter_var() function. Use the filter_var() function on the $email variable and specify the filter id FILTER_VALIDATE_EMAIL as the second parameter. We can test the validation of email using a valid and an invalid email.įor example, create a function validateEmail() that takes a parameter $email. The filter id validates the email against the syntax in RFC 822. The email is said valid, not in the sense that the email exists. The function returns the filtered data if the function succeeds or returns false. Thus, we can check the email provided whether is valid. The function takes the email address as a string as the first parameter and the above-specified filter id as the second parameter. The FILTER_VALIDATE_EMAIL filter name specifies that the email needs to verify. We can use the filter_var() function to filter a variable with a particular filter name. Use the filter_var() Function and the FILTER_VALIDATE_EMAIL to Validate the Email in PHP This method uses the preg_match() function to check if the email is valid according to the provided regular expression. We will introduce another method to validate email in PHP using the regular expression. This method first sanitizes the email address and then validates the email address. We will also demonstrate another method to validate email addresses in PHP using the FILTER_SANITIZE_EMAIL and FILTER_VALIDATE_EMAIL filter name ids along with the fiter_var() function.
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