Regular Expressions - Study Mode

[#11] PHP has long supported two regular expression implementations known as _______ and _______. 1. Perl 2. PEAR 3. Pearl 4. POSIX
Correct Answer

(C) 1 and 4

[#12] Which one of the following regular expression matches any string containing zero or one p?
Correct Answer

(C) P?

[#13] [:alpha:] can also be specified as.
Correct Answer

(B) [A-za-z]

Explanation

Solution: [:alpha:] is nothing but Lowercase and uppercase alphabetical characters.

[#14] How many functions does PHP offer for searching strings using POSIX style regular expression?
Correct Answer

(A) 7

Explanation

Solution: ereg(), ereg_replace(), eregi(), eregi_replace(), split(), spliti(), and sql_regcase() are the functions offered.

[#15] POSIX implementation was deprecated in which version of PHP?
Correct Answer

(D) PHP 5.3