php reqular expression code example
Example 1: regex php
<?php
// First Verif your regex code with https://regex101.com/
$str = "Visit W3Schools";
$pattern = "/w3schools/i";
echo preg_match($pattern, $str); // Outputs 1
// test email with REGEX
if (!preg_match("/[-0-9a-zA-Z.+_]+@[-0-9a-zA-Z.+_]+.[a-zA-Z]{2,4}/", $emailAddress)){
//Email address is invalid.
}
// use filter var to valide Email
if(filter_var($emailAddress, FILTER_VALIDATE_EMAIL))
{
//The email address is valid.
} else{
//The email address is invalid.
}
?>
Example 2: What is a Regular Expression in php
A regular expression is a sequence of characters that forms a search pattern.