PHP FILTER_SANITIZE_STRING Filter
Example
Remove all HTML tags from a string:
<?php
$str = "<h1>Hello World!</h1>";
$newstr = filter_var($str, FILTER_SANITIZE_STRING);
echo $newstr;
?>
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Definition and Usage
The FILTER_SANITIZE_STRING filter removes tags and remove or encode special characters from a string.
Possible options and flags:
- FILTER_FLAG_NO_ENCODE_QUOTES - Do not encode quotes
- FILTER_FLAG_STRIP_LOW - Remove characters with ASCII value < 32
- FILTER_FLAG_STRIP_HIGH - Remove characters with ASCII value > 127
- FILTER_FLAG_ENCODE_LOW - Encode characters with ASCII value < 32
- FILTER_FLAG_ENCODE_HIGH - Encode characters with ASCII value > 127
- FILTER_FLAG_ENCODE_AMP - Encode the "&" character to &
More Examples
Example 1
Remove all HTML tags and all characters with ASCII value > 127, from a string:
<?php
$str = "<h1>Hello WorldÆØÅ!</h1>";
$newstr = filter_var($str, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
echo $newstr;
?>
Try it Yourself »
❮ PHP Filter Reference
