Q. [:alpha:] can also be specified as..

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Q. How many functions does PHP offer for searching strings using POSIX style regular expression?

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Q. POSIX implementation was deprecated in which version of PHP?

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Q. POSIX stands for

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Q. Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?

i) fol
ii) fool
iii) fooool
iv) fooooool

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Q. Which among the following is/are not a metacharacter?

i) \a
ii) \A
iii) \b
iv) \B

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Q. How many functions does PHP offer for searching and modifying strings using Perl-compatible regular expressions.

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Q. Say we have two compare two strings which of the following function/functions can you use?

i) strcmp()
ii) strcasecmp()
iii) strspn()
iv) strcspn()

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Q. Which one of the following functions will convert a string to all uppercase?

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Q. Which one of the following functions can be used to concatenate array elements to form a single delimited string?

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Q. Which one of the following functions finds the last occurrence of a string, returning its numerical position?

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