PhpLab

PHP functions

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70%

7 / 10 correct

Retake test

1. 1

   Which function prints a string to the output?

   • echo
   • print_r
   • var_dump
   • sprintf

   Correct

2. 2

   Which function dumps a value with type info?

   • echo
   • print
   • var_dump
   • isset

   Correct

3. 3

   Which operator concatenates two strings?

   Wrong · expected .

4. 4

   Which superglobal holds POST form data?

   Correct

5. 5

   Which function returns the length of a string?

   • count
   • strlen
   • sizeof
   • mb_len

   Correct

6. 6

   Which function counts items in an array?

   • strlen
   • count
   • length
   • size

   Correct

7. 7

   Which function checks if a variable is set?

   Wrong · expected isset

8. 8

   Which function splits a string by a delimiter?

   • explode
   • split
   • implode
   • join

   Correct

9. 9

   Which function joins array items into a string?

   • explode
   • implode
   • concat
   • merge

   Correct

10. 10

    Which function pretty-prints an array for humans?

    Wrong · expected print_r