String
Manipulation and Basic Operations-1
1.
What will be the output of the following PHP code?
<?php
$str =
"hello world";
$result =
strtoupper($str);
echo
$result;
?>
a) HELLO
WORLD
b) hello world
c) Hello World
d) HELLO_WORLD
Answer: a) HELLO WORLD
2.
Which PHP function is used to find the length of a string?
a) strlen()
b) str_len()
c) length()
d) get_length()
Answer: a) strlen()
3.
What is the result of the following PHP code?
php
<?php
$str =
"PHP is fun!";
$result =
substr($str, 4, 2);
echo
$result;
?>
a) is
b) is
c) fun
d) PHP
Answer: a) is
4.
Which function is used to replace all occurrences of a substring in a
string?
a) str_replace()
b) replace()
c) str_substitute()
d) str_replac()
Answer: a) str_replace()
5.
What will be the output of the following PHP code if $str is
"Hello"?
php
<?php
$str =
"Hello";
$result =
strtolower($str);
echo
$result;
?>
a) hello
b) HELLO
c) Hello
d) hEllO
Answer: a) hello
6.
What function is used to concatenate two strings in PHP?
a) concat()
b) strcat()
c) . (dot operator)
d) join()
Answer: c) . (dot operator)
7.
What will be the result of the following PHP code?
php
<?php
$str =
" Trim me! ";
$result =
trim($str);
echo
$result;
?>
a) Trim me!
b) Trim me!
c) Trim me!
d) Trim me!
Answer: c) Trim me!
8.
Which PHP function is used to find the position of the first occurrence
of a substring in a string?
a) strpos()
b) indexOf()
c) find()
d) str_index()
Answer: a) strpos()
9.
What is the result of the following PHP code?
php
<?php
$str =
"hello";
$result =
str_repeat($str, 3);
echo
$result;
?>
a)
hellohellohello
b) hellohellohellohellohellohello
c) hello, hello, hello
d) hello hello hello
Answer: a) hellohellohello
10.Which function is used to split a string into an array
by a delimiter?
a) explode()
b) split()
c) substr()
d) str_split()
Answer: a) explode()
11.What will be the output of the following PHP code?
php
<?php
$str =
"world";
$result =
"Hello, " . $str . "!";
echo
$result;
?>
a) Hello,
world!
b) Hello, world
c) Hello, , world!
d) Hello, !
Answer: a) Hello, world!
12.Which function is used to get a substring of a string
starting from a specific position?
a) substr()
b) substr_start()
c) slice()
d) cut()
Answer: a) substr()
13.What will be the result of the following PHP code if
$str is "Hello World"?
php
<?php
$str =
"Hello World";
$result =
strpos($str, "World");
echo
$result;
?>
a) 6
b) 7
c) 11
d) Error
Answer: b) 6
14.What does the strlen() function return?
a) The length of a string
b) The first character of a string
c) The last character of a string
d) The number of words in a string
Answer: a) The length of a string
15.Which function is used to find the last occurrence of
a substring in a string?
a) strrpos()
b) strpos_last()
c) find_last()
d) str_last()
Answer: a) strrpos()
String
Manipulation and Basic Operations-2
1.
What will be the output of the following PHP code if $str is
"PHP"?
<?php
$str =
"PHP";
$result =
str_pad($str, 10, "*");
echo
$result;
?>
a)
PHP*******
b) ***PHP****
c) PHP
d) PHP******
Answer: a) PHP*******
2.
Which PHP function is used to remove whitespace from both ends of a
string?
a) trim()
b) strip_tags()
c) rtrim()
d) ltrim()
Answer: a) trim()
3.
What does the addslashes() function do?
a) Adds slashes to escape special characters
b) Removes slashes from a string
c) Adds spaces between words
d) Trims whitespace from the string
Answer: a) Adds slashes to escape special
characters
4.
What will be the output of the following PHP code if $str is
"Welcome to PHP"?
php
<?php
$str =
"Welcome to PHP";
$result =
str_replace("PHP", "Programming", $str);
echo
$result;
?>
a) Welcome
to PHP
b) Welcome to Programming
c) Welcome to PHP Programming
d) Welcome Programming
Answer: b) Welcome to Programming
5.
What is the result of the following PHP code?
php
<?php
$str =
"hello world";
$result =
ucfirst($str);
echo
$result;
?>
a) Hello
world
b) hello World
c) Hello World
d) HELLO WORLD
Answer: a) Hello world
6.
Which function is used to find the position of the last occurrence of a
substring in a string?
a) strrpos()
b) str_last_pos()
c) find_last()
d) last_index_of()
Answer: a) strrpos()
7.
What will be the output of the following PHP code if $str is
"2024"?
php
<?php
$str =
"2024";
$result =
intval($str);
echo
$result;
?>
a) 2024
b) 2024.0
c) string
d) 0
Answer: a) 2024
8.
Which function is used to convert a string to an array of individual
characters?
a) str_split()
b) explode()
c) split()
d) char_array()
Answer: a) str_split()
9.
What is the result of the following PHP code if $str is
"HelloWorld"?
php
<?php
$str =
"HelloWorld";
$result =
substr($str, -5);
echo
$result;
?>
a) World
b) Hello
c) lloWorld
d) World
Answer: a) World
10.Which function is used to get a substring from a
string, starting from a specific position to the end?
a) substr()
b) str_slice()
c) str_cut()
d) cut_string()
Answer: a) substr()
11.What will be the result of the following PHP code if
$str is "test123test"?
php
<?php
$str =
"test123test";
$result =
strrpos($str, "test");
echo
$result;
?>
a) 0
b) 4
c) 8
d) -1
Answer: c) 8
12.What does the strtoupper() function do?
a) Converts a string to uppercase
b) Converts a string to lowercase
c) Capitalizes the first letter of each word
d) Converts a string to title case
Answer: a) Converts a string to uppercase
13.Which function would you use to remove all occurrences
of a specific character from a string?
a) str_replace()
b) remove_chars()
c) str_remove()
d) delete()
Answer: a) str_replace()
14.What is the result of the following PHP code?
php
<?php
$str =
"PHP is fun!";
$result =
substr_count($str, "is");
echo
$result;
?>
a) 1
b) 2
c) 0
d) 3
Answer: a) 1
15.What will be the output of the following PHP code if
$str is "Hello"?
php
<?php
$str =
"Hello";
$result =
strrev($str);
echo
$result;
?>
a) olleH
b) Hello
c) Heoll
d) Holle
Answer: a) olleH
String
Manipulation and Basic Operations-3
1.
What will be the output of the following PHP code if $str is
"HelloWorld"?
<?php
$str =
"HelloWorld";
$result =
substr($str, 0, 5);
echo
$result;
?>
a) Hello
b) World
c) HelloWorld
d) HelloW
Answer: a) Hello
2.
Which function is used to convert all characters of a string to
lowercase?
a) strtolower()
b) strtoupper()
c) lcfirst()
d) convert_lower()
Answer: a) strtolower()
3.
What does the strtr() function do?
a) Translates characters in a string
b) Trims whitespace from a string
c) Reverses a string
d) Converts a string to an array
Answer: a) Translates characters in a string
4.
What will be the result of the following PHP code?
php
<?php
$str =
"hello world";
$result =
ucwords($str);
echo
$result;
?>
a) Hello
world
b) Hello World
c) HELLO WORLD
d) hello World
Answer: b) Hello World
5.
Which PHP function is used to find and replace a substring within a
string?
a) str_replace()
b) substr_replace()
c) str_find_replace()
d) replace_substr()
Answer: a) str_replace()
6.
What is the result of the following PHP code?
php
<?php
$str =
"abc123";
$result =
ctype_alpha($str);
echo
$result;
?>
a) true
b) false
c) 1
d) 0
Answer: b) false
7.
Which function can be used to remove a specific character from a string?
a) str_replace()
b) remove_char()
c) strip()
d) str_remove()
Answer: a) str_replace()
8.
What will be the output of the following PHP code?
php
<?php
$str =
"data.csv";
$result =
pathinfo($str, PATHINFO_EXTENSION);
echo
$result;
?>
a) data
b) csv
c) data.csv
d) pathinfo
Answer: b) csv
9.
Which function is used to find the length of a string in bytes?
a) mb_strlen()
b) strlen()
c) strlen_byte()
d) byte_length()
Answer: a) mb_strlen()
10.What will be the result of the following PHP code if
$str is " spaced "?
php
<?php
$str =
" spaced ";
$result =
ltrim($str);
echo
$result;
?>
a) spaced
b) spaced
c) spaced
d) spaced
Answer: a) spaced
11.What does the str_split() function do?
a) Splits a string into an array of characters
b) Joins an array of characters into a string
c) Finds a substring in a string
d) Reverses a string
Answer: a) Splits a string into an array of
characters
12.What will be the output of the following PHP code if
$str is "hello_world"?
php
<?php
$str =
"hello_world";
$result =
str_replace("_", " ", $str);
echo
$result;
?>
a) hello
world
b) hello_world
c) hello
d) world
Answer: a) hello world
13.Which PHP function is used to return the part of a
string between two specified positions?
a) substr()
b) strcut()
c) slice()
d) get_substring()
Answer: a) substr()
14.What is the result of the following PHP code?
php
<?php
$str =
" extra spaces ";
$result =
rtrim($str);
echo
$result;
?>
a) extra
spaces
b) extra spaces
c) extra spaces
d) extra spaces
Answer: b) extra spaces
15.Which PHP function can be used to get the ASCII value
of the first character of a string?
a) ord()
b) chr()
c) ascii()
d) get_ascii()
Answer: a) ord()
No comments:
Post a Comment