How To Use PHP Advanced Filters Examples

PHP 8 , PHP

Nicesnippets

870

27-07-2021


How To Use PHP Advanced Filters Examples

Hi guys,

Today i will explained How To Use PHP Advanced Filters. This example is so easy to use in php. The Advanced filtered is a provided to the php in by default.

I am explained to the advance filter function in php Validate an Integer Within a Range,Validate IPv6 Address,Validate URL - Must Contain QueryString,Remove Characters With ASCII Value > 127 to explained.

So let's start to the example.

Validate an Integer Within a Range


This example uses the filter_var() function to check if a variable is both of type INT, and between 1 and 200

<?php

$int = 122;

$min = 1;

$max = 200;

if (filter_var($int, FILTER_VALIDATE_INT, array("options" => array("min_range"=>$min, "max_range"=>$max))) === false) {

echo("Variable value is not within the legal range");

} else {

echo("Variable value is within the legal range");

}

?>

Output

Variable value is within the legal range

Validate IPv6 Address

This example uses the filter_var() function to check if the variable $ip is a valid IPv6 address.

<?php

$ip = "2001:0db8:85a3:08d3:1319:8a2e:0370:7334";

if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) {

echo("$ip is a valid IPv6 address");

} else {

echo("$ip is not a valid IPv6 address");

}

?>

Output

2001:0db8:85a3:08d3:1319:8a2e:0370:7334 is a valid IPv6 address

Validate URL - Must Contain QueryString

This example uses the filter_var() function to check if the variable $url is a URL with a querystring

<?php

$url = "https://www.nicesnippets.com";

if (!filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_QUERY_REQUIRED) === false) {

echo("$url is a valid URL with a query string");

} else {

echo("$url is not a valid URL with a query string");

}

?>

Output

https://www.nicesnippets.com is not a valid URL with a query string

Remove Characters With ASCII Value > 127

This example uses the filter_var() function to sanitize a string. It will both remove all HTML tags, and all characters with ASCII value > 127, from the string

<?php

$str = "<h1>Hello WorldÆØÅ!</h1>";

$newstr = filter_var($str, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);

echo $newstr;

?>

Output

Hello World!

Now you can check your own.

I hope it can help you...


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