FILTER_SANITIZE_STRING constant in PHP

The FILTER_SANITIZE_STRING constant deletes tags and encodes special characters from a string.

Flags

• FILTER_FLAG_NO_ENCODE_QUOTES − Do not encode quotes

• FILTER_FLAG_STRIP_LOW − Removes characters with ASCII value less than 32

• FILTER_FLAG_STRIP_HIGH − Removes characters with ASCII value greater than 127

• FILTER_FLAG_ENCODE_LOW − Encodes characters with ASCII value less than 32

• FILTER_FLAG_ENCODE_HIGH − Encodes characters with ASCII value greater than 127

• FILTER_FLAG_ENCODE_AMP − Encodes the "&" character to &

Return

The FILTER_SANITIZE_STRING constant does not return anything.

Example

<?php
   $var = "<p>£Demo! ££</p>";
   $res = filter_var($var, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
   echo $res;
?>

Output

The following is the output.

Demo!