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PHP FILTER_SANITIZE_STRING Filter

PHP Filter Reference Complete PHP Filter Reference

Definition and Usage

The FILTER_SANITIZE_STRING filter strips or encodes unwanted characters.

This filter removes data that is potentially harmful for your application. It is used to strip tags and remove or encode unwanted characters.

  • Name: "string"
  • ID-number: 513

Possible options and flags:

  • FILTER_FLAG_NO_ENCODE_QUOTES - This flag does not encode quotes
  • FILTER_FLAG_STRIP_LOW - Strip characters with ASCII value below 32
  • FILTER_FLAG_STRIP_HIGH - Strip characters with ASCII value above 127
  • FILTER_FLAG_ENCODE_LOW - Encode characters with ASCII value below 32
  • FILTER_FLAG_ENCODE_HIGH - Encode characters with ASCII value above 127
  • FILTER_FLAG_ENCODE_AMP - Encode the & character to &

Example

<?php
$var="<b>Peter Griffin<b>";

var_dump(filter_var($var, FILTER_SANITIZE_STRING));
?>

The output of the code will be:

string(13) "Peter Griffin"

PHP Filter Reference Complete PHP Filter Reference
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