php filter_var filters specified data_PHP tutorial

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Definition and usage
The filter_var() function filters a variable specifying the filter.

Returns success of filtering data or FALSE on failure.

Grammar

filter_var(variable, filter, options)

variable: required. Specify variable filter: optional. Specifies the numbered filter to use. The default is FILTER_SANITIZE_STRING.

Check PHP filters for full possible reference filters. The filter number can be a number name (such as FILTER_VALIDATE_EMAIL) or an ID number (such as 274). Options: Optional. Specifies an associative array of flags/options or a single flag/option. Check out the various possible choices and flags for each filter

Let’s take a look at the filter_var example tutorial

if(!filter_var("someone@example....com", FILTER_VALIDATE_EMAIL)) { echo("E-mail is not valid"); } else { echo("E-mail is valid" ); } ?>

Output results.

E-mail is not valid