PHP FILTER_VALIDATE_REGEXP Filter

What is FILTER_VALIDATE_REGEXP in PHP?

Explanation

PHP FILTER_VALIDATE_REGEXP is used to check and validate a regular expression.
Name: "validate_regexp"
ID-number: 272

Options:


regexp - specifies the regular expression to validate against

Example :


<?php
$val="Hscripts.com is a free webmaster resource";
$opt=array("options"=>array("regexp"=>"/^Hsc(.*)/"));
if(filter_var($val, FILTER_VALIDATE_REGEXP,$opt))
{
echo "Matched String";
}
else
{
echo "Not Matched String";
}
?>

Result :

Matched String

In the above example, the regular expression "/^Hsc(.*)/" is validated.

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