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What is the output of the following code snippet?
$x = 5;
echo ++$x * 2;- A) 12
- B) 14
- C) 11
- D) 10
Answer: B) 14
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Which of the following PHP functions is used to convert a string to lowercase?
- A) to_lower()
- B) strtolower()
- C) lower_case()
- D) case_lower()
Answer: B) strtolower()
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What is the purpose of the
array_merge()function in PHP?- A) Merges two or more arrays into a single array
- B) Sorts an array in ascending order
- C) Reverses the order of elements in an array
- D) Removes duplicate values from an array
Answer: A) Merges two or more arrays into a single array
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What is the output of the following code snippet?
$str = "PHP is a popular scripting language."; echo str_word_count($str);
- A) 6
- B) 5
- C) 7
- D) 8
Answer: B) 5
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Which of the following PHP functions is used to check if a variable is an object?
- A) is_object()
- B) object_check()
- C) check_object()
- D) obj_check()
Answer: A) is_object()
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What is the output of the following code snippet?
$num = 123; echo strval($num);
- A) 123
- B) "123"
- C) '123'
- D) Error
Answer: A) 123
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Which of the following PHP functions is used to round a floating-point number to the nearest integer?
- A) ceil()
- B) floor()
- C) round()
- D) abs()
Answer: C) round()
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What is the purpose of the
implode()function in PHP?- A) Splits a string into an array
- B) Joins elements of an array into a string
- C) Reverses the order of elements in an array
- D) Removes whitespace from the beginning and end of a string
Answer: B) Joins elements of an array into a string
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What is the output of the following code snippet?
$str = "Hello World!"; echo strpos($str, "world");
- A) 5
- B) 6
- C) -1
- D) Error
Answer: C) -1
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Which of the following PHP functions is used to replace a substring within a string?
- A) str_replace()
- B) substr_replace()
- C) replace_str()
- D) str_modify()
Answer: A) str_replace()
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