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PHP basics
1/25
What does PHP stand for?
Preprocessed Hypertext Page
Personal Home Page
Hypertext Transfer Protocol
PHP: Hypertext Preprocessor
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2/25
When is the default case of switch statement executed?
When one of cases evaluate to true
When other cases evaluate to false
When other cases evaluate to true
Always
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3/25
How do you handle exceptions in PHP?
Using 'if-else' statements
Using 'try-catch' blocks
Using 'error-reporting' functions
PHP does not support exception handling
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4/25
How can you get the total number of elements in an array in PHP?
length()
sizeof()
array_length()
count()
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5/25
What is the correct syntax for creating a function in PHP?
function NewFunction() {}
create NewFunction() {}
new Function() {}
function: NewFunction() {}
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6/25
How can you declare a static variable in PHP?
static $var;
var static;
$static var;
static_var $var;
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7/25
Which of these is a valid way to start a PHP session?
session_start();
begin_session();
init_session();
start_session();
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8/25
What is the correct way to declare a PHP interface?
interface MyInterface {}
class MyInterface {}
new Interface MyInterface {}
implement MyInterface {}
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9/25
What does the 'PDO' stand for in PHP?
PHP Database Object
Public Data Object
Persistent Data Object
Program Data Orientation
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10/25
Which PHP function is used to send a custom HTTP header?
set_header()
http_header()
header()
send_header()
Next >
11/25
In PHP, which function can you use to convert a string to an integer?
str_to_int()
int()
intval()
to_integer()
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12/25
Which statement is true about PHP namespaces?
PHP does not support namespaces
Namespaces are used to create aliases for classes
Namespaces are used to organize code into logical groups
Namespaces are used for extending classes
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13/25
What is the difference between 'echo' and 'print' in PHP?
'echo' is faster than 'print'
'print' can output multiple values, 'echo' cannot
'echo' returns a value, 'print' does not
There is no difference
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14/25
Which of the following is a correct way to declare an associative array in PHP?
$array = [1 => 'a', 2 => 'b'];
$array = (1:'a', 2:'b');
$array = array(1, 'a', 2, 'b');
$array = {1: 'a', 2: 'b'};
Next >
15/25
In PHP, what is the purpose of the 'isset()' function?
Checks if a variable has been set and is not NULL
Determines if a variable is an integer
Checks if a function exists
Sets a variable with a specified value
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16/25
How do you declare a global variable in PHP?
global $variable;
public $variable;
$variable = global;
declare($variable);
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17/25
Which PHP function is used to remove white spaces or other predefined characters from the right end of a string?
trim()
ltrim()
strip()
rtrim()
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18/25
Which PHP function is used to convert all applicable characters to HTML entities?
htmlentities()
htmlspecialchars()
convert_to_html()
encode_html()
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19/25
What is the output of the expression 'var_dump(3 == '3')' in PHP?
bool(true)
bool(false)
NULL
int(3)
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20/25
In PHP, which operator is used for error control?
@
#
!
$
Next >
21/25
How do you check if a PHP variable is of type object?
is_object()
is_type('object')
typeof()
instanceof
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22/25
What does the PHP function 'array_slice()' do?
Removes a portion of an array and returns it
Slices an array into two arrays
Creates a copy of an array
Reduces the size of an array
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23/25
How can you append an element to an existing array in PHP?
$array[] = 'new_element';
array_append($array, 'new_element');
$array.add('new_element');
append($array, 'new_element');
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24/25
What does the 'compact()' function in PHP do?
Reduces the size of an array
Creates an array containing variables and their values
Compacts HTML output
Minimizes memory usage
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25/25
What is the use of the 'empty()' function in PHP?
Checks if a variable is empty
Empties the content of a variable
Deletes a variable
Checks if a variable is not set
Next >
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