PHP functions

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1

Which function prints a string to the output?
- echo
- print_r
- var_dump
- sprintf
2

Which function dumps a value with type info?
- echo
- print
- var_dump
- isset
3

Which operator concatenates two strings?
4

Which superglobal holds POST form data?
5

Which function returns the length of a string?
- count
- strlen
- sizeof
- mb_len
6

Which function counts items in an array?
- strlen
- count
- length
- size
7

Which function checks if a variable is set?
8

Which function splits a string by a delimiter?
- explode
- split
- implode
- join
9

Which function joins array items into a string?
- explode
- implode
- concat
- merge
10

Which function pretty-prints an array for humans?