PHP PHP 4

Question 1

Which PHP function is used to execute a regular expression and store captured groups?

Accepted Answer

preg_match()

Answer

preg_match() performs a regular expression match and populates an array with captured groups.

Question 2

What is the default visibility of class properties and methods in PHP if no modifier is specified?

Accepted Answer

public

Answer

In PHP, members declared without an access modifier default to public visibility.

Question 3

Which PHP function formats a number with thousands separators and decimal points?

Accepted Answer

number_format()

Answer

number_format() formats a number with grouped thousands and allows specifying decimal places and separator characters.

Question 4

What does PHP's list() construct do?

Accepted Answer

Assigns values from an array to variables

Answer

list() (or its shorthand []) is used to assign array values to multiple variables in one statement.

Question 5

In PHP, which loop guarantees that the loop body executes at least once?

Accepted Answer

do...while

Answer

The do...while loop checks its condition after executing the body, so the body runs at least one time.

PHP - PHP Programming Language Practice Test