PHP Quiz 3

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

($)

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

(*)

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

(-)

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

Metacharacters

The escape sequence to insert a carriage return is ____.

\r

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

anchor

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

backslash

In PHP, the escape character is the ____.

backslash(\)

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

complex string syntax

The ____ function splits a string into an indexed array.

explode()

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

false

Metacharacters that specify the quantity of a match qualifiers.

false

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

false

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

false

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.

false

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

md()5

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

number of characters

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

strtoupper()

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

trim()

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.

true

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

true

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

true

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

true

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

true