how remove special characters in php code example

Example 1: php strip out special characters

function clean($string) {
   $string = str_replace(' ', '-', $string); // Replaces all spaces with hyphens.

   return preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars.
}

Example 2: Remove Special Character in PHP

phpCopy<?php
function RemoveSpecialChar($str)
{
    $res = preg_replace('/[0-9\@\.\;\" "]+/', '', $str);
    return $res;
}
$str = "My name is  hello and email [email protected];";
$str1 = RemoveSpecialChar($str);
echo "My UpdatedString: ", $str1;
?>