K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function delays execution in microseconds? (A) sleep() (B) delay() (C) usleep() (D) micro_sleep() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (C) usleep() Explanation: usleep() pauses execution in microseconds.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function gets the Unix timestamp? (A) now() (B) time() (C) timestamp() (D) date() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) time() Explanation: time() returns the current Unix timestamp.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function formats a local date/time? (A) format() (B) strftime() (C) date() (D) time_format() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (C) date() Explanation: date() formats a local date/time.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function parses a date/time string into a timestamp? (A) parse_date() (B) strtotime() (C) date_parse() (D) time_parse() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) strtotime() Explanation: strtotime() parses English textual datetime descriptions.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function checks whether a variable is numeric? (A) is_number() (B) is_numeric() (C) is_int() (D) ctype_digit() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) is_numeric() Explanation: is_numeric() checks for numeric strings or numbers.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function checks if a variable is an integer? (A) is_numeric() (B) is_int() (C) ctype_digit() (D) intval() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) is_int() Explanation: is_int() checks if the variable type is integer.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function checks if a string contains only digits? (A) is_numeric() (B) ctype_digit() (C) preg_digit() (D) is_int() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) ctype_digit() Explanation: ctype_digit() checks for digits only (0–9).
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP operator is used for null coalescing assignment? (A) ?? (B) ?: (C) ??= (D) => 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (C) ??= Explanation: The ??= operator assigns value only if variable is null.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. What will be the output of: echo 5 ?? 10; (A) 5 (B) 10 (C) null (D) Error 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (A) 5 Explanation: Null coalescing returns left operand if not null.
K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP function checks if a path is a regular file? (A) file_exists() (B) is_dir() (C) is_file() (D) file_type() 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (C) is_file() Explanation: is_file() verifies regular files only.