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MCQs

Total Questions : 9
Question 1. Which one of the following does not describe a validating filter?
  1.    Strict format rules
  2.    Returns the expected type on success or FALSE on failure
  3.    Are used to allow or disallow specified characters in a string
  4.    Are used to validate user input
 Discuss Question
Answer: Option C. -> Are used to allow or disallow specified characters in a string
Question 2. How many types of filtering are present in PHP?
  1.    None
  2.    2
  3.    4
  4.    3
 Discuss Question
Answer: Option B. -> 2
Question 3. What will be the output of the following PHP code?$num = "123";if (!filter_var($num, FILTER_VALIDATE_INT))echo("Integer is not valid");elseecho("Integer is valid");
  1.    Integer is not valid
  2.    Error
  3.    Integer is valid
  4.    No output is returned
 Discuss Question
Answer: Option C. -> Integer is valid
Question 4. Which one of the following filter is used to filter several variables with the same or different filters?
  1.    filter_var()
  2.    filter_input_array
  3.    filter_var_array()
  4.    filter_input
 Discuss Question
Answer: Option C. -> filter_var_array()
Question 5. Which of the following is/are an external data?1. Cookies2. Input data from a form3. Server Variables4. Web services data
  1.    2 and 3
  2.    Only 2
  3.    None of the mentioned
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Question 6. 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, $int_options))echo("Integer is not valid");elseecho("Integer is valid");
  1.    Error
  2.    No output is returned
  3.    Integer is not valid
  4.    Integer is valid
 Discuss Question
Answer: Option C. -> Integer is not valid
Question 7. What will be the output of the following PHP code?$value = 'car';$result = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
  1.    TRUE
  2.    ERROR
  3.    FALSE
  4.    NULL
 Discuss Question
Answer: Option D. -> NULL
Question 8. Which one of the following filter checks if variable of specified type exists?
  1.    filter_has_var
  2.    filter_id
  3.    filter_var_array
  4.    filter_var
 Discuss Question
Answer: Option A. -> filter_has_var
Question 9. What will be the output of the following PHP code?function convertSpace($string){return str_replace("_", " ", $string);}$string = "Peter_is_a_great_guy!";echo filter_var($string, FILTER_CALLBACK, array("options"=>"convertSpace"));
  1.    Peter_is_a_great_guy!
  2.    Error
  3.    Peter is a great guy!
  4.    Peterisagreatguy!
 Discuss Question
Answer: Option C. -> Peter is a great guy!

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