Which of the following methods is used to check if an array is associative or numeric?

What will be the output?

Difference between $a == $b and $a === $b in PHP?

Correct way to create two independent connections to MySQL in PHP?

Which is incorrect with respect to json_encode and serialize()?

What is a salted MD5 hashed password?

What does this display? 1, 'b'=>2, 'c'=>3); echo key($x);

Which network transports doesn’t PHP support?

Which function inserts one or more elements to the beginning of an array?

Value of $a?

Which PHP function will return a file's last access time?