filter_var() function in PHP

The filter_var() function is used to filter variables using the specified filter.

Syntax

filter_var(variable, filter, options)

Parameters

• variable − The name of the variable.

• #filter − The name of the filter whose ID is to be obtained.

• options − Specifies the options to use.

Return value

The filter_var() function returns filtered data when successful, and returns false when failed.

Example

Demonstration

<?php
   $myEmail = "examplee@demo.com";
   if (filter_var($myEmail, FILTER_VALIDATE_EMAIL {
      echo("$myEmail = valid email address");
   } else {
      echo("$myEmail = invalid email address");
   }
?>

Output

The following is the output result.

examplee@demo.com = valid email address

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