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PHP Filter

PHP Filter
How many types of filtering are present in PHP?

3
2
4
None

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

filter_var()
filter_input
filter_input_array
filter_var_array()

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PHP Filter
What will be the output of the following PHP code?
$value = 'car';
$result = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);

NULL
FALSE
ERROR
TRUE

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

Are used to allow or disallow specified characters in a string
Are used to validate user input
Strict format rules
Returns the expected type on success or FALSE on failure

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PHP Filter
What will be the output of the following PHP code?
$num = "123";
if (!filter_var($num, FILTER_VALIDATE_INT))
echo("Integer is not valid");
else
echo("Integer is valid");

No output is returned
Error
Integer is valid
Integer is not valid

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

Only 2
2 and 3
All of the mentioned
None of the mentioned

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