PHP Mock Paper 3 – Online Test | PHP: Basics to Advance

Q1. Which function protects pages by role in the project?

A. flash() B. user() C. e() D. require_level()

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Correct Answer : D. require_level()
It redirects users without the required level. (From Project 1 : Project – A Mini Content Management System with PHP and MySQLi)

Q2. $_REQUEST contains the contents of:

A. $_GET, $_POST and $_COOKIE B. $_FILES only C. $_SESSION and $_COOKIE D. $_GET and $_POST only

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Correct Answer : A. $_GET, $_POST and $_COOKIE
$_REQUEST merges GET, POST and COOKIE data. (From Chapter 11 : PHP Form Handling)

Q3. E-mail header injection is prevented by:

A. Sending only HTML mail B. Using GET instead of POST C. Increasing post_max_size D. Validating fields and rejecting newlines

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Correct Answer : D. Validating fields and rejecting newlines
Injected headers need newline characters. (From Chapter 15 : PHP and E-Mail)

Q4. MVC is considered an evolution of:

A. SQL B. OOP C. HTTP D. IPO (Input, Processing, Output)

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Correct Answer : D. IPO (Input, Processing, Output)
IPO was the best-practice model of older applications. (From Chapter 19 : PHP and MVC (Model–View–Controller))

Q5. Which PHP 8 feature allows format(1234.5, prefix: "Rs. ")?

A. Variadic functions B. Named arguments C. Closures D. Type juggling

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Correct Answer : B. Named arguments
Arguments are passed by parameter name. (From Chapter 10 : User-Defined Functions)

Q6. Which DSN type is visible to Apache running as a service?

A. User DSN B. Temporary DSN C. System DSN D. File DSN only

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Correct Answer : C. System DSN
System DSNs are available to all users and services. (From Chapter 37 : Database Support using ODBC)

Q7. PHP code is executed:

A. In the operating system shell only B. On the web server C. In the browser D. In the database

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Correct Answer : B. On the web server
PHP is server-side; only its output reaches the browser. (From Chapter 3 : PHP – Hypertext Preprocessor: Introduction and Syntax)

Q8. Which pattern matches exactly ten digits?

A. /^\d{10}$/ B. /^\w{10}$/ C. /\d+10/ D. /[10]/

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Correct Answer : A. /^\d{10}$/
^ and $ anchor the string; \d{10} means exactly ten digits. (From Chapter 12 : Form Validation and Regular Expressions)

Q9. Which loop is designed to iterate over arrays?

A. for B. foreach C. while D. switch

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Correct Answer : B. foreach
foreach visits each element of an array. (From Chapter 7 : Looping Statements)

Q10. Which error_log() message type appends to a file?

A. 3 B. 4 C. 0 D. 1

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Correct Answer : A. 3
Type 3 appends the message to the destination file. (From Chapter 26 : Error, HTTP, Mail and Mathematical Functions)

Q11. What is the name of the constructor method in PHP 8?

A. __construct() B. The class name C. constructor() D. __init()

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Correct Answer : A. __construct()
Only __construct() is a constructor in PHP 8. (From Chapter 17 : Object-Oriented PHP – Classes and Objects)

Q12. \strlen("x") inside a namespace calls:

A. The namespaced strlen B. The global strlen C. A static method D. Nothing – it is a syntax error

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Correct Answer : B. The global strlen
A leading backslash means the global space. (From Chapter 16 : PHP Namespaces)

Q13. Which PHP 8.2 method prepares, binds and executes in one call?

A. $conn->execute_query() B. $stmt->run() C. $conn->multi_query() D. $conn->query()

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Correct Answer : A. $conn->execute_query()
execute_query() takes the SQL and an array of values. (From Chapter 36 : MySQLi Prepared Statements, Transactions and Security)

Q14. Range limits for FILTER_VALIDATE_INT are given in an array named:

A. "limits" B. "options" C. "range" D. "flags"

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Correct Answer : B. "options"
Options such as min_range and max_range go in "options". (From Chapter 21 : PHP Filters)

Q15. In which PHP version was register_globals removed?

A. 5.3 B. 8.0 C. 4.2 D. 5.4

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Correct Answer : D. 5.4
It was turned off by default in 4.2, deprecated in 5.3 and removed in 5.4. (From Chapter 4 : Constants, Variables and Data Types)

Q16. Which function is deprecated since PHP 8.1?

A. mktime() B. strtotime() C. strftime() D. date()

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Correct Answer : C. strftime()
strftime() and gmstrftime() are deprecated. (From Chapter 24 : Date, Time and Calendar Functions)

Q17. Which loop can iterate a mysqli_result directly?

A. foreach B. for C. None D. do…while only

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Correct Answer : A. foreach
mysqli_result is traversable. (From Chapter 35 : PHP and MySQLi – Object-Oriented Style)

Q18. Which superglobal stores session variables?

A. $_SERVER B. $_COOKIE C. $_SESSION D. $GLOBALS

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Correct Answer : C. $_SESSION
$_SESSION holds the session data. (From Chapter 31 : State Management – Sessions)

Q19. XML tags are:

A. Defined by the author B. Only lowercase C. Optional D. Predefined like HTML

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Correct Answer : A. Defined by the author
XML has no predefined tags. (From Chapter 38 : XML with PHP)

Q20. Which classic function is equivalent to the SQL command USE?

A. mysql_connect() B. mysql_query() C. mysql_select_db() D. mysql_use()

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Correct Answer : C. mysql_select_db()
It makes a database the active one. (From Chapter 33 : PHP and MySQL – The Classic mysql API)

Q21. Which component of the AMP stack is the web server?

A. MySQL B. MariaDB C. PHP D. Apache

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Correct Answer : D. Apache
Apache is the HTTP (web) server; MySQL/MariaDB is the database server and PHP is the scripting language. (From Chapter 1 : AMP Basics – Apache, MySQL and PHP)

Q22. An abstract class:

A. Can be instantiated with new B. Cannot have normal methods C. Must be final D. Cannot be instantiated

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Correct Answer : D. Cannot be instantiated
Abstract classes only serve as parents. (From Chapter 18 : Object-Oriented PHP – Abstraction, Overloading, Iteration and Patterns)

Q23. Which keyword introduces an extra condition after if?

A. otherwise B. elif C. elseif D. else if then

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Correct Answer : C. elseif
PHP uses elseif (else if also works). (From Chapter 6 : Conditional Statements)

Q24. Which operator appends a string to a variable?

A. &= B. .= C. += D. ==

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Correct Answer : B. .=
.= is the concatenating assignment operator. (From Chapter 5 : Operators and Expressions)

Q25. empty("0") returns:

A. true B. null C. false D. An error

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Correct Answer : A. true
The string "0" counts as empty. (From Chapter 29 : String, Variable and Miscellaneous Functions)

Q26. Most browsers limit a single cookie to about:

A. Unlimited B. 255 bytes C. 1 MB D. 4096 bytes

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Correct Answer : D. 4096 bytes
Cookies are limited to roughly 4 KB. (From Chapter 30 : State Management – Cookies and Query Strings)

Q27. Which program creates Apache password files?

A. mysqladmin B. passwd C. openssl D. htpasswd

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Correct Answer : D. htpasswd
htpasswd creates and updates the user file. (From Chapter 22 : .htaccess Security)

Q28. $_FILES["file"]["tmp_name"] contains:

A. The error code B. The MIME type C. The original file name D. The temporary path on the server

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Correct Answer : D. The temporary path on the server
tmp_name is the server-side temporary copy. (From Chapter 14 : PHP and the File System)

Q29. Which data type stores exact monetary values?

A. DOUBLE B. VARCHAR C. DECIMAL D. FLOAT

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Correct Answer : C. DECIMAL
DECIMAL is exact fixed-point. (From Chapter 32 : Database Support and MySQL Fundamentals)

Q30. What does echo 'Hi\n$x'; print?

A. A parse error B. Hi, a new line and the value of $x C. Hi\n$x D. Hi$x

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Correct Answer : C. Hi\n$x
Single-quoted strings neither interpret \n nor expand variables. (From Chapter 8 : PHP and Strings)

Q31. If the included file is missing, include produces a:

A. Notice only after the script ends B. Fatal error C. Parse error D. Warning

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Correct Answer : D. Warning
include warns and continues. (From Chapter 13 : Server Side Includes – include and require)

Q32. rmdir() succeeds only if the directory is:

A. Inside htdocs B. Hidden C. Writable by everyone D. Empty

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Correct Answer : D. Empty
Files must be removed first. (From Chapter 25 : Class/Object, Function Handling, Directory and File Functions)

Q33. The MySQLi procedural equivalent of mysql_query($sql) is:

A. mysqli_query($link, $sql) B. mysqli_exec($sql, $link) C. mysqli_query($sql) D. $sql->query()

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Correct Answer : A. mysqli_query($link, $sql)
The connection is the first argument. (From Chapter 27 : MySQL Functions and their MySQLi Equivalents)

Q34. Who can publish articles in the project CMS?

A. Any guest B. Only the author C. Moderators and administrators D. Nobody

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Correct Answer : C. Moderators and administrators
Publishing requires the proper permissions. (From Chapter 40 : Content Management System (CMS) – Concepts)

Q35. $families['Griffin'][2] accesses an element of a:

A. Resource B. Constant C. Multidimensional array D. String

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Correct Answer : C. Multidimensional array
Two indexes are used: the family and the member. (From Chapter 9 : PHP and Arrays)

Q36. ip2long("192.168.1.10") returns:

A. An integer B. A host name C. A dotted string D. An array

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Correct Answer : A. An integer
It converts the address into an integer. (From Chapter 28 : Network, Output Buffer, Configuration and Session Functions)

Q37. The default web root folder of XAMPP on Windows is:

A. C:\xampp\www B. C:\xampp\public_html C. C:\inetpub\wwwroot D. C:\xampp\htdocs

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Correct Answer : D. C:\xampp\htdocs
Files in C:\xampp\htdocs are served at http://localhost/. (From Chapter 2 : XAMPP – Installation, Configuration and Use)

Q38. A custom exception class must:

A. Extend Exception B. Use a trait C. Implement Iterator D. Be abstract

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Correct Answer : A. Extend Exception
Custom exceptions inherit from Exception. (From Chapter 20 : Error and Exception Handling)

Q39. AJAX was originally made possible by an object first shipped in:

A. Chrome 1 B. Firefox 1 C. Internet Explorer 5 D. Netscape 2

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Correct Answer : C. Internet Explorer 5
XMLHttpRequest began as an ActiveX control in IE5. (From Chapter 39 : PHP and AJAX)

Q40. Which function adds elements to the beginning of an array?

A. array_unshift() B. array_push() C. array_merge() D. array_pad()

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Correct Answer : A. array_unshift()
array_unshift() prepends values. (From Chapter 23 : Apache and Array Functions)

Q41. Which fetch function lets you write $row->name?

A. mysqli_fetch_assoc() B. mysqli_fetch_object() C. mysqli_fetch_lengths() D. mysqli_fetch_row()

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Correct Answer : B. mysqli_fetch_object()
It returns the row as an object. (From Chapter 34 : PHP and MySQLi – Procedural Style)

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