PHP MCQ Questions Answers

1. What will be the value of $result? 1, 'val2' => array('val21' => 21, 'val22' => 22), 'val3' => 3 ); $result = array_key_exists('val22', $myArr); ?>

2. What are Traits in PHP?

3. What function allows you to print a backtrace?

4. How do single quotes interpret strings in PHP?

5. What is the recommendation regarding PHP closing tags in a document?

6. What's the output? $values = array(0, NULL, FALSE); foreach($values as $key => $value) { echo isset($values[$key]) ? 'TRUE ' : 'FALSE '; }

7. Which statement opens a file for writing, to append data at the end of its content ?

8. The PHP function which capitalizes the first letter of each word in a string

9. How can you call this function? $greet = function($name) { printf('Hello %s\r\n', $name); };

10. $table = array('old_value'); foreach($table as $row) { $row='new_value'; } echo $table[0]; will produce:

11. To access functions of an instantiated class, you use the following:

12. Which one checks to see if HTTP headers have been sent?

13. Difference between the use of single quotes and double quotes in PHP syntax?

14. Which statement will NOT combine strings $s1 and $s2 into a single string?

15. In this example code, $result = print_r ($a); $result is the

16. Given the following code, the Atom class can access which variables? class Flash { public $fast; private $superSpeed; private $ultraSonic; protected $warp; } class Atom extends Flash { }

17. Valid character for starting a PHP function name?

18. Atleast how many abstract methods must an abstract class contain?

19. Which is not a valid PHP variable declaration?

20. Choose the string for which the POSIX regular expression ^[A-Za-z]$ matches.

21. The interpreter executes one PHP command which ends in a semi-colon. This is referred to as a

22. What is the value of $start after exiting the for loop?

23. Which array allows you to use textual keys so that array indices can be more descriptive?

24. The following code will produce: var_dump(5 === '5');

25. How would you create a numeric array from the following string that did not include '-test' and where each digit had its own array key? $str = '6.1.4.2.6-test';

26. Which one generates a unique ID for members of your site?

27. What is the GD Library?

28. What's the output?

29. Which keyword precedes a method name?

30. Which is NOT a function of PHP session support?

31. What is a collection of characters that is treated as one entity called?

32. A fatal run-time error would be caught by

33. Which function checks for the existence of a particular key?

34. What function helps prevent MySQL injection?

35. Which one sorts an array and maintains index association?

36. How do I typecast a variable to boolean?

37. Which function changes directory on ftp-connection?

38. What's the output?

39. OCI8, PostgreSQL, and SQLSRV are all examples of

40. Which outputs a formatted string?

41. What is a large binary data object called in PHP?

42. The ......... function parses an English textual date or time into a Unix timestamp

43. Arrays in PHP can only hold the same data type.

44. What's the output? $str = 'My name is O\'Connor.'; echo stripslashes($str);

45. Which function allows you to delete a file?

46. Which function removes all HTML and PHP tags?

47. What's the output? $> php -r 'echo echo 'a';'

48. Which datatypes are treated as arrays in some cases?

49. What is the output?

50. What type of statements tell your PHP script to execute a section of code only if certain criteria are met?

51. Which keyword refers to properties or methods within the class itself?

52. Correct way to add comments to PHP?

53. Which PHP extension provides an abstract method for database retrieval?

54. Which language construct is used to terminate a running script?

55. To output information about a variable use the function

56. What function converts 'Hatfields & McCoys' into 'Hatfields & McCoys'?

57. Which PHP function creates an array by using one array for keys and another for its values?

58. Which statement is true about PHP constants?

59. HTTP cookies can be used to:

60. Given, the following: What is the output?

61. We can include ('sandy.php') two times in one PHP page 'my.php'.

62. What type of operator is && in PHP?

63. How do you perform a strict comparison of variables for type and value?

64. Which function returns one or more randomly selected keys from an array?

65. Which PHP function creates a directory on an FTP server?

66. Function to specify a start position of a string and length arguments to retrieve part of a string?

67. What's the output?

68. Which one displays the browser properties using PHP?

69. When using the POST method, variables are displayed in the URL:

70. What is the official website of PHP

71. mysqli_num_rows() function is used to:

72. How do you specify a string literal in PHP?

73. Which function returns information on the PHP configuration you are using?

74. Which is a string operator?

75. Right way to set a value on an object stdClass?

76. How do you inherit the methods from BaseClass in MyClass?

77. Which variable contains values of $_GET, $_POST, and $_COOKIE?

78. Can PHP scripts be embedded directly into XHTML documents?

79. __construct is a

80. An Object is a/an ___ of a class

81. Which one stores PHP values, such as strings, numbers or arrays?

82. Which assigns a value of type string to variable $x?

83. If a string is enclosed in double-quotes, PHP will interpret more escape sequences for special characters such as

84. list — Assign variables as if they were an array

85. Which statement returns the number of characters in the string variable $a?

86. Which PHP math function would you use to return the number with the lowest value of two specified numbers?

87. How to call a method from within a class?

88. Which PHP function returns part of a string?

89. In the following PHP script, $arr = array(1,2,3);, 1, 2, and 3 are the array

90. Which one is NOT a command for sending output to the standard output?

91. What is meant by nl2br()?

92. Choose the correct value for $i. $i = 2; $i++;

93. Which variable does PHP make automatically available to you?

94. Which PHP function finds the position of the last occurrence of a substring within a string?

95. To modify the default PHP settings such as whether to accept the short form open tag (<?), you need to change the

96. Which construct is typically used for exception handling in PHP?

97. Which function tests a string for an exact match of the argument?

98. Which statements start a session and end a session?

99. Which does not represent a single, valid PHP variable

100. Which are examples of PHP comments?