The ____________________ quantifier specifies that the preceding character in the pattern is optional.
Correct Answer:
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Q35: _ are patterns that are used for
Q72: Metacharacters that specify the quantity of a
Q73: ASCII values range from _.
Q75: The ucfirst() function and the lcfirst() function
Q76: The _ function is can be used
Q78: Characters contained in a set of parentheses
Q79: Any characters included in a _ class
Q80: A(n) _ metacharacter in a regular expression
Q81: PCRE includes special character types, such as
Q82: To allow a string to contain an
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