Getting Started with PHP - Verification Email and URL

PHP - Validate Name

#The following code will detect in a simple way whether the name field contains letters and spaces, if the name field value does not Legal, error message will be output

$name = test_input($_POST["name"]);
if (!preg_match("/^[a-zA-Z ]*$/ ",$name)) {
$nameErr = "Only letters and spaces allowed";
}

PHP - Verification Email

The following code will check whether the e-mail address is legal in a simple way. If the e-mail address is illegal, an error message will be output:

$email = test_input($_POST["email"]);
if (!preg_match("/([\w\-] +\@[\w\-]+\.[\w\-]+)/",$email)) {
$emailErr = "Illegal email format";
}

PHP - Verify URL

The following code will check whether the URL address is legal (the following regular expression runs in the URL containing dashes: "-"), if The URL address is illegal and an error message will be output:

$website = test_input($_POST["website"]);
if (!preg_match("/\b(?:(?:https? |ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@# \/%=~_|]/i",$website)) {
$websiteErr = "Illegal URL address";
}

PHP - Verify Name, E-mail, and URL