Find the output of PHP programs | Filters | Set 2: Enhance the knowledge of PHP Filters by solving and finding the output of some PHP programs.
Question 1:
<?php
$IP = "2021:0abd:85c4:09d2:2219:3b2e:4e70:6234";
$isValid = filter_var($IP, FILTER_VALIDATE_IPV6);
if ($isValid == true) echo "IP address is valid<br>";
else echo "IP address is not valid<br>";
?>
Question 2:
<?php
$URL = "https://www.includehelp.com?A=10&B=20";
$isValid = filter_var($URL, FILTER_VALIDATE_URL, FILTER_FLAG_QUERY_REQUIRED);
if ($isValid == true) echo ("Given URL is a valid URL with a query string");
else echo ("Given URL is not a valid URL with a query string");
?>
Question 3:
<?php
$A = "<h2>";
$B = "IncludeHelp";
$C = "ÆØÅ!";
$D = "<h2>";
$S = $A . $B . $C . $D;
$R_S = filter_var($S, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
echo $R_S;
?>
Question 4:
<?php
$val = 222;
$min_range = 100;
$max_range = 300;
$isValid = filter_var($val, FILTER_VALIDATE_INT, array(
"options" => array(
"min_range" => $min_range,
"max_range" => $max_range
)
));
if ($isValid == true) echo ("The val lies in given range");
else echo ("The val does not lie in given range");
?>
Question 5:
<?php
$val = 222;
$min_range = 100;
$max_range = 300;
$isValid = filter_var($val, FILTER_VALIDATE_INT, array(
"options" => array(
"xxx" => $min_range,
"yyy" => $max_range
)
));
if ($isValid == true) echo ("The val lies in given range");
else echo ("The val does not lie in given range");
?>
Php programming
Answer 1:
Output:
Explanation:
In the above program, we created $IP initialized with a valid IPV6 address. But we did not use filter properly in filter_var() function to validate IPv6 address. The correct way is given below:
$isValid = filter_var($IP, FILTER_VALIDATE_IP,FILTER_VALIDATE_IPV6);The above function will return true, If $IP contains a valid IPv6 address, otherwise it will return false. In our case we did not use filters properly, then "IP address is not valid" will be printed on the webpage.
Answer 2:
Output:
Explanation:
The above program will print "Given URL is a valid URL with a query string" on the webpage. Here, we created variable $URL and initialized with "https://www.includehelp.com?A=10&B=20", here we also used 'A' and 'B' for query-string in the given URL.
$isValid = filter_var($URL, FILTER_VALIDATE_URL, FILTER_FLAG_QUERY_REQUIRED);The above function will return true, because we used URL with query-string then "Given URL is a valid URL with a query string" will print on the webpage.
Answer 3:
Output:
Explanation:
In the above program, we created variable $A, $B, $C, and $D and initialized with some values. Then we concatenate all variables and assigned to $S.
$R_S = filter_var($S, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);The above statemment used FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH filters that will remove HTML tags and NON-ASCII characters.Then "IncludeHelp!" will be printed on the webpage
Answer 4:
Output:
Explanation:
In the above program, we created three variables $val, $min_range, and $max_range initialized with 222, 100, and 300 respectively.
$isValid = filter_var($val, FILTER_VALIDATE_INT, array( "options" => array( "min_range" => $min_range, "max_range" => $max_range ) ));The above function will return true because 222 lying between 100 and 300, then "The val lies in given range" will print on the webpage.
Answer 5:
Output:
Explanation:
In the above program, we created three variables $val, $min_range, and $max_range initialized with 222, 100, and 300 respectively.
$isValid = filter_var($val, FILTER_VALIDATE_INT, array( "options" => array( "xxx" => $min_range, "yyy" => $max_range ) ));The above function will return true because 222 lying between 100 and 300, then "The val lies in given range" will print on the webpage.
need an explanation for this answer? contact us directly to get an explanation for this answer