Deck 3: Manipulating Strings

Question 1

An escape character tells the compiler or interpreter to exit the program at the escape character.

Answer 1

False

Question 2

Placing a backslash in front of an apostrophe tells the PHP scripting engine that the apostrophe is to be treated as a regular keyboard character.

Answer 2

True

Question 3

The opposite of the explode() function is the implode() function.

Answer 3

True

Question 4

The escape sequence to insert a carriage return is \r.

Question 5

The strchr() function or strrchr() function return a substring from the specified characters to the end of the string.

Question 6

The concatenation operator (.) combines several string variables and literal strings and assigns the new value to another variable.

Question 7

ASCII stands for American Standard Code for Internet Information.

Question 8

The strtok() function breaks a program into functions.

Question 9

To insert a horizontal tab, use the escape sequence \t.

Question 10

The term parsing refers to the act of dividing a string into logical component substrings or tokens.

Question 11

The explode() function splits a string into an indexed array at a specified separator.

Question 12

The concatenation assignment operator (.=) combines two text strings.

Question 13

The function substr_count() returns the total number of characters in a string.

Question 14

The strcasecmp() function and the strcmp() function respectively perform a case-insensitive and case-sensitive comparison of strings.

Question 15

The syntax for the strtok() function is $variable=strtok(string, separators);

Question 16

The strpos() function performs a case-sensitive search for specified characters in a string and returns the position of the first occurrence of a substring within a string.

Question 17

The escape character combined with one or more other characters is called an escape sequence.

Question 18

The str_word_count() function returns the number of digits in a string.

Question 19

The escape sequence \\ inserts a comment.

Question 20

All text strings must begin and end with double quotation marks.

Question 21

An anchor specifies that a pattern must appear at that position in the string.

Question 22

In PHP, the escape character is the ____.

A) pipe (|)
B) period (.)
C) semicolon(;)
D) backslash(\)

Question 23

The soundex() function returns a value representing a name's phonetic equivalent.

Question 24

The metacharacter (^) anchors characters to the end of a string.

Question 25

Regular expressions are patterns that are used for matching and manipulating strings according to specified rules.

Question 26

The escape sequence \\ inserts a(n) ____.

A) comment
B) web ink
C) backslash
D) directory

Question 27

PHP support Perl Compatible Regular Expressions (PCRE).

Question 28

The levenshtein() function returns the number of characters you need to change for two strings to be the same.

Question 29

The escape sequence to insert a carriage return is ____.

A) \r
B) \cr
C) \t
D) \\

Question 30

A structure in which variables are placed within curly braces inside of a string is called a ____.

A) complex string syntax
B) simple string syntax
C) function
D) method

Question 31

The concatenation operator in PHP is a ____.

A) plus sign (+)
B) period (.)
C) minus sign (-)
D) question mark (?)

Question 32

The ____ function converts any occurrence of (&), ("), ('), (<), and (>) to their equivalent HTML character entity.

A) converttohtml()
B) specialhtml()
C) htmlspecialchars()
D) convertchars()

Question 33

A megaphone is an algorithm that returns a code for indexing words by their sound, when pronounced in English

Question 34

Metacharacters that specify the quantity of a match qualifiers.

Question 35

The escape character sequence ____ inserts a new line.

A) \l
B) \CR
C) \n
D) \nl

Question 36

Regular expression patterns are enclosed in opening and closing delimiters.

Question 37

The strlen() function returns the total ____ in a string.

A) number of numerals
B) number of characters
C) number of occurrences
D) number of words

Question 38

The metacharacter (.) matches any single character.

Question 39

The ____ function converts all of the letters in a string to capital letters.

A) strtoupper()
B) stringtoupper()
C) strtolower()
D) stringtolower()

Question 40

The most commonly used string counting function is the ____ function, which returns the total number of characters in a string.

A) str_count()
B) strlen()
C) strpos()
D) total()

Question 41

The metacharacter, ____, specifies an anchor at the end of the line.

A) (\)
B) (&)
C) (^)
D) ($)

Question 42

The concatenation operator in PHP is a ____________________.

Question 43

The characters contained in a set of parentheses within a regular expression are referred as a ____.

A) subpattern
B) basepattern
C) nested pattern
D) base expression

Question 44

____ are special characters that define the pattern matching rules in a regular expression.

A) Specialchars
B) Patterncharacters
C) Expressionchars
D) Metacharacters

Question 45

The ____ function uses a strong encryption algorithm called Message-Digest Algorithm to create a one-way hash of an entered string.

A) strhash()
B) str-ireplace()
C) mda()
D) md5()

Question 46

The ____ function will remove both leading and trailing spaces from a string.

A) ltrim()
B) rtrm()
C) trim()
D) strtrim()

Question 47

____________________ syntax allows you to use the value of a variable inside a text string enclosed by double quotation marks.

Question 48

The ____ quantifier specifies that zero or more of the preceding characters can match.

A) (&)
B) (*)
C) (#)
D) (?)

Question 49

The similar_text() function returns the number of ____ to strings have in common.

A) characters
B) words
C) numbers
D) sounds

Question 50

____ quantifiers allow you to more precisely specify the number of times a character must repeat sequentially.

A) Curly brace
B) Curly bracket
C) Parentheses
D) Double quotation marks

Question 51

The ____ metacharacter is used to specify a range of values in a character class.

A) (-)
B) (+)
C) (@)
D) (')

Question 52

In a regular expression, a(n) ____ specifies that the pattern must appear at that position in the string.

A) pointer
B) anchor
C) position
D) spotter

Question 53

The ____ function splits a string into an indexed array.

A) repair()
B) implode()
C) explode()
D) strtok()

Question 54

The escape character combined with one or more other characters is called a(n) ____________________.

Question 55

ASCII values range from ____.

A) 0 to 512
B) 0 to 255
C) 1 - 26
D) 1 - 128

Question 56

Using a ____________________ escape sequence at the end of an echo statement makes XHTML code easier to debug and read.

Question 57

The ____ metacharacter is used to allow a string to contain an alternate set of substrings.

A) (!)
B) (|)
C) (\)
D) (/)

Question 58

The ____ function randomly scrambles the order of characters in a string.

A) str_scramble()
B) str_shuffle()
C) str_jumble()
D) str_random()

Question 59

In PHP, the escape character is the ____________________.

Question 60

The strcmp() function performs a ____ comparison of two strings.

A) case-insensitive
B) standard
C) case-sensitive
D) sub-standard

Question 61

The circumflex character (^) used in a character class specifies ____________________ characters to exclude in a pattern match.

Question 62

The strncmp() function and the strncasecmp() function contain a third argument specifying the ____________________ of characters to compare in the string.

Question 63

Regular expressions consist of literal characters and ____________________, which are special characters that define the pattern matching rules in an expression.

Question 64

The argument you pass to the strlen() function is a literal string or string variable whose ____________________ you want to count.

Question 65

The ____________________ quantifier specifies that one or more sequential occurrences of the preceding characters match.

Question 66

A(n) ____________________ specifies that a pattern must appear at that position in the string.

Question 67

The ____________________ function is used to return only a portion of a string.

Question 68

A()n) ____________________ hash is a fixed length string based on the entered text from which it is almost impossible to determine the original text.

Question 69

The ____________________ metacharacter is used to specify a range of values in a character class.

Question 70

The ____________________ functions do not modify the contents of an existing string; instead they return a new string, which is assigned to a variable.

Question 71

The strtok() function is used to break a string into smaller strings, called ____________________.

Question 72

Metacharacters that specify the quantity of a match are called ____________________.

Question 73

ASCII values range from ____________________.

Question 74

____________________ are patterns that are used for matching and manipulating strings according to specified rules.

Question 75

The ucfirst() function and the lcfirst() function only change the ____________________ character of a string.

Question 76

The ____________________ function is can be used to check for palindromes because it reverses the characters in a string.

Question 77

The ____________________ quantifier specifies that the preceding character in the pattern is optional.

Question 78

Characters contained in a set of parentheses within a regular expression are referred to as a subexpression or ____________________.

Question 79

Any characters included in a ____________________ class represent alternate characters that are allowed in a pattern match.

Question 80

A(n) ____________________ metacharacter in a regular expression pattern specifies that the pattern must contain a value where the metacharacter is located.