Exam 3: Manipulating Strings

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

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

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

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

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

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

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

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

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

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

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

ASCII values range from ____________________.

The metacharacter (.) matches any single character.

In PHP, the escape character is the ____________________.

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

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

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

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

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

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