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PHP Filter

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

4
None
3
2

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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_var_array()
filter_input
filter_input_array

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PHP Filter
What will be the output of the following PHP code?
$var=300;
$int_options = array("options"=>array ("min_range"=>0, "max_range"=>256));
if (!filter_var($var, FILTER_VALIDATE_INT, $int_options))
echo("Integer is not valid");
else
echo("Integer is valid");

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

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

filter_var
filter_id
filter_var_array
filter_has_var

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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);

ERROR
NULL
FALSE
TRUE

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

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

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