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What is the purpose of the
session_destroy()function in PHP?- A) Starts a new session
- B) Destroys all session variables
- C) Removes a specific session variable
- D) Checks if a session variable exists
Answer: B) Destroys all session variables
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What is the output of the following code snippet?
echo "Hello" . 2 + 3 . "World";
- A) Hello5World
- B) Hello23World
- C) 5Hello3World
- D) Error
Answer: B) Hello23World
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Which of the following PHP functions is used to retrieve information about a file?
- A) fileinfo()
- B) fileinfo_stat()
- C) file_info()
- D) file_stat()
Answer: B) fileinfo_stat()
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What is the purpose of the
array_push()function in PHP?- A) Removes the last element from an array
- B) Adds an element to the beginning of an array
- C) Removes the first element from an array
- D) Adds one or more elements to the end of an array
Answer: D) Adds one or more elements to the end of an array
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What is the correct way to define a constant in PHP?
- A) define_constant()
- B) constant_define()
- C) set_constant()
- D) define()
Answer: D) define()
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Which of the following is used to execute a block of code repeatedly as long as a condition is true in PHP?
- A) for loop
- B) foreach loop
- C) while loop
- D) do-while loop
Answer: C) while loop
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What does the
is_numeric()function do in PHP?- A) Checks if a variable is a number or numeric string
- B) Converts a string to a number
- C) Checks if a variable is an integer
- D) Checks if a variable is empty
Answer: A) Checks if a variable is a number or numeric string
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What is the output of the following code snippet?
$x = "5"; $y = "10"; echo $x + $y;
- A) 15
- B) 510
- C) 5
- D) Error
Answer: A) 15
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Which of the following PHP functions is used to count the number of elements in an array?
- A) array_length()
- B) count()
- C) array_count()
- D) sizeof()
Answer: B) count()
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What does the
array_reverse()function do in PHP?- A) Sorts an array in ascending order
- B) Sorts an array in descending order
- C) Reverses the order of elements in an array
- D) Removes duplicate values from an array
Answer: C) Reverses the order of elements in an array
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