PHP · all questions

PHP Filter
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9

Questions

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Q1

Which of the following is/are an external data?
1. Cookies
2. Input data from a form
3. Server Variables
4. Web services data

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Q2

How many types of filtering are present in PHP?

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Q3

Which one of the following filter is used to filter several variables with the same or different filters?

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Q4

What will be the output of the following PHP code?

<?php
$num = "123";
if (!filter_var($num, FILTER_VALIDATE_INT))
    echo("Integer is not valid");
else
    echo("Integer is valid");
?>

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Q5

Which one of the following does not describe a validating filter?

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Q6

What will be the output of the following PHP code?

<?php
$var=300;
$int_options = array("options"=>array ("min_range"=>0, "max_range"=>256));
if (!filter_var( $v a r, F I L T E R_{V} A L I D A T E_{I} N T,$ int_options))
    echo("Integer is not valid");
else
    echo("Integer is valid");
?>

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Q7

Which one of the following filter checks if variable of specified type exists?

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Q8

What will be the output of the following PHP code?

<?php
$value = 'car';
 $r es u l t < s p an c l a ss = " p - l i g h t - b l u e " >=< / s p an > f i l t e r_{v} a r ($ value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
?>

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Q9

What will be the output of the following PHP code?

<?php
function convertSpace($string)
{
  return str_replace("_", " ", $string);
}
$string = "Peter_is_a_great_guy!";
echo filter_var($string, FILTER_CALLBACK, array("options"=>"convertSpace"));
?>

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