PHP Basic
PHP HOME PHP Intro PHP Install PHP Syntax PHP Variables PHP String PHP Operators PHP If...Else PHP Switch PHP Arrays PHP Sorting Arrays PHP While Loops PHP For Loops PHP Functions PHP Forms PHP $_GET PHP $_POSTPHP Advanced
PHP Arrays Multi PHP Date PHP Include PHP File PHP File Upload PHP Cookies PHP Sessions PHP E-mail PHP Secure E-mail PHP Error PHP Exception PHP FilterPHP Database
PHP MySQL Intro PHP MySQL Connect PHP CREATE DB/Table PHP INSERT INTO PHP SELECT PHP WHERE PHP ORDER BY PHP UPDATE PHP DELETE PHP ODBCPHP XML
XML Expat Parser XML DOM XML SimpleXMLPHP and AJAX
AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX RSS Reader AJAX PollPHP Reference
PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Filesystem PHP Filter PHP FTP PHP HTTP PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP SimpleXML PHP String PHP XML PHP Zip PHP TimezonesPHP Quiz
PHP Quiz PHP CertificatePHP filter_var() Function
Complete PHP Filter Reference
Definition and Usage
The filter_var() function filters a variable with the specified filter.
Returns the filtered data on success or FALSE on failure.
Syntax
filter_var(variable, filter, options)
| Parameter | Description |
|---|---|
| variable | Required. Specifies the variable to filter |
| filter | Optional. Specifies the ID of the filter to use.
Default is FILTER_SANITIZE_STRING. Check the
Complete PHP Filter Reference for
possible filters A filter ID can be an ID name (like FILTER_VALIDATE_EMAIL) or an ID number (like 274) |
| options | Optional. Specifies an associative array of flags/options or a single flag/option. Check each filter for possible options and flags |
Example
<?php
if(!filter_var("someone@example....com", FILTER_VALIDATE_EMAIL))
{
echo("E-mail is not valid");
}
else
{
echo("E-mail is valid");
}
?>
if(!filter_var("someone@example....com", FILTER_VALIDATE_EMAIL))
{
echo("E-mail is not valid");
}
else
{
echo("E-mail is valid");
}
?>
The output of the code should be:
E-mail is not valid
Complete PHP Filter Reference
Your suggestion:
Close [X]
Thank You For Helping Us!
Your message has been sent to W3Schools.
Close [X]
WEB BUILDING
XML Editor - Free Trial! FREE Website BUILDER FREE Website Creator Best Website Templates
