filter_var

Name:filter_var

Category:Filter

Programming Language:php

One-line Description:Get a variable and filter it.

Definition and usage

filter_var() function filters variables through the specified filter.

If successful, the filtered data is returned, and if failed, false.

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

输出类似：

E-mail is not valid

 filter_var ( variable , filter , options )

parameter	describe
variable	Required. Specify the variables to be filtered.
filter	Optional. Specifies the ID of the filter to be used.
options	Specifies an array containing flags/options. Check each filter for possible flags and options.

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