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Quiz: Basic PHP questions

Core PHP ideas and use in web development.

Which version of PHP is most stable?

PHP 8.0

PHP 5.6

PHP 8.3

PHP 7.4

How to define a string variable in PHP?

str $var = "text";

string $var = "text";

$var = "text";

String $var = "text";

Which function converts string to uppercase?

upperCase()

strtoUpper()

strtoupper()

toUpperCase()

What does strlen() function return?

Number of characters in string

Number of lines

Number of words

Number of bytes

What types of arrays exist in PHP?

Only indexed

Mixed

Only associative

Indexed and Associative

How to properly connect to MySQL?

mysqli or PDO

Via SQL

Via HTTP

mysql (deprecated)

What is SQL Injection?

Injection of malicious code via SQL queries

SQL error

SQL organization

Low version of SQL

What is isset() function used for?

Check if variable is set

Set a variable

Delete variable

Restore variable

What is $_GET superglobal in PHP?

Data from POST method

Data from GET method

Data from URL

Data from file

What is a session in PHP?

Response to request

Temporary user data storage

HTTP connection

Permanent storage

What is the difference between isset() and empty()?

They are the same

No difference

isset() checks existence, empty() checks value

empty() checks existence

How to iterate through array in PHP?

foreach

for

while

map

What is a function in PHP?

Constant

Reusable block of code

Class

Variable

How to declare a function in PHP?

def name() {}

function: name() {}

function name() {}

func name() {}

What is OOP in PHP?

Output-Optimized Program

Operation-Organized Package

Open-Operated Program

Object-Oriented Programming

What is a class in PHP?

Variable

Constant

Function

Template for objects

What is inheritance in OOP?

Unexpected transfer

Duplication

Getting properties from parent class

Introduction

What are access modifiers?

Variable type

Control access to properties

Types of functions

Part of SQL command

How to write else if in PHP?

else if

elseif

else-if

elif

What is a constructor in a class?

__create()

__construct()

__new()

__init()

What is namespace in PHP?

Function constructor

Local scope

Data type

Space for avoiding naming conflicts

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