Server Side Programming Articles - Page 2358 of 2650

The FILTER_SANITIZE_EMAIL constant deletes all illegal characters from an email address.ReturnThe FILTER_SANITIZE_EMAIL constant does not return anything.ExampleOutputThe following is the output.abc@demo.com

The FILTER_VALIDATE_URL constant validates a URL.FlagsFILTER_FLAG_SCHEME_REQUIRED − URL must be RFC compliant.FILTER_FLAG_HOST_REQUIRED − URL must include host name.FILTER_FLAG_PATH_REQUIRED −URL must have a path after the domain name.FILTER_FLAG_QUERY_REQUIRED −URL must have a query string.ReturnThe FILTER_VALIDATE_URL constant does not return anything.Example Live DemoOutputThe following is the output.Valid URL!Let us see another example.Example Live DemoOutputHere is the output.Invalid URL!

The FILTER_VALIDATE_REGEXP constant validates a value against a Perl-compatible regular expression. Options regexp − The regular expression to validate against. Return The FILTER_VALIDATE_REGEXP constant does not return anything. Example Live Demo The following is the output. Matched String!

The FILTER_VALIDATE_IP constant validates an IP address. Flags FILTER_FLAG_IPV4 − The value must be a valid IPv4 address FILTER_FLAG_IPV6 − The value must be a valid IPv6 address FILTER_FLAG_NO_PRIV_RANGE − The value must not be within a private range FILTER_FLAG_NO_RES_RANGE − The value must not be within a reserved range Return The FILTER_VALIDATE_IP constant does not return anything. Example Live Demo The following is the output. Invalid IP address! Let us see another example. Live Demo Here is the output. Valid IP address!

The FILTER_VALIDATE_INT constant validates value as integer.Options and flagsmin_range − The minimum integer valuemax_range − The maximum integer valueFILTER_FLAG_ALLOW_OCTAL − Allows octal number valuesFILTER_FLAG_ALLOW_HEX − Allows hexadecimal number valuesReturnThe FILTER_VALIDATE_INT constant does not return anything.Example Live DemoOutputThe following is the output.float(3.5) Integer VariableLet us see another example.Example Live DemoOutputHere is the output.Accepted range!

The FILTER_VALIDATE_FLOAT constant validates a value as a float number.ReturnThe FILTER_VALIDATE_FLOAT constant does not return anything.Example Live DemoOutputThe following is the output.float(291.9)

The FILTER_VALIDATE_EMAIL() constant validates an email address.ReturnThe FILTER_VALIDATE_EMAIL() does not return anything.Example Live DemoOutputThe following is the output.examplee@demo.com = valid email address

The FILTER_VALIDATE_BOOLEAN constant validates value as a boolean option.ReturnThe FILTER_VALIDATE_BOOLEAN constant returns TRUE for "1", "true", "on" and "yes". It returns FALSE for "0", "false", "off" and "no" otherwise, NULL.Example Live DemoOutputThe following is the output.bool(true)ExampleLet us see another example.OutputHere is the output.bool(false)

The filter_var() function is used to filter a variable with a specified filter.Syntaxfilter_var(variable, filter, options)Parametersvariable − The name of variable.filter − The name of filter to get ID.options − Specifies options to use.ReturnThe filter_var() function returns filtered data on success, or false on failure.Example Live Demo

The filter_var_array() function is used to filter multiple variables. Syntax filter_var_array(arrayname, parameters) Parameters arrayname − An array to filter the data. parameters − It specifies an array of filter arguments. Return The filter_var_array() function returns an array of values of the requested variables on success or false on failure. Example Live Demo The following is the output. Array ( [stname] => Jack [stmarks] => 95 [stemail] => jack@abcde.com )