[PHP]Strip non alphanumeric chracters

[mihu]

Strip non alphanumeric characters from a string with php

Code: Select all

<?php
$string_to_be_stripped = "Hi, I am a string and I need to be stripped...";
$new_string = ereg_replace("[^A-Za-z0-9]", "", $string_to_be_stripped );
?>


Reference: http://www.emanueleferonato.com/2006/07 ... -with-php/

My version:

Code: Select all

function _clean_input($id) {
    $cleaned_input = $this->input->post($id);
   
    if ($cleaned_input !== FALSE) {
        $cleaned_input = preg_replace("/[^\w\s-,]/", "", $cleaned_input);
    }
      
    return $cleaned_input;
}


Reference: http://us.php.net/manual/en/function.preg-replace.php